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State of California Regional Analytics
  -- Population & Components of Change; 2010-15

Components of Change: 7/1/2010-6/30/2015
Natural Change 1,266,354
  equals Births 2,510,247
  less Deaths 1,243,893
Net Migration 556,217
  equals net International Migration 805,144
  plus net Domestic Migration -248,927

The population of the State of California changed from 37,334,079 on 2010 to 39,144,818 in 2015 -- a change of 1,810,739 (4.85%). This report provides a summary of how and why the population has changed during this period and what these factors suggest about future change.

Primary Contributing Factors to Change
The primary contributing factors resulting in population change are 1) natural change (births less deaths) and/or 2) net migration. Eight tables are presented below providing annual data for each component county of the state and state summary. The tables provide data on the total population, births, deaths, natural change (births less deaths), international migration, domestic migration and net migration.

From 2010 to 2015 (7/1/2010-6/30/2015), natural change (1,266,354) exceeded net migration (556,217); natural change has been the primary contributing factor for the total state population change. Examine the state by county tables below to learn about how each county contributes to the state population growth or decline.

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Related Sections
  • State of the States -- all states interactive table
  • Metro S&O Reports -- all metros interactive table
  • CountyTrends 2010-2015 -- all counties interactive table
  • CountyTrends -- multi-sourced county data
  • Regional Data Analytics Main

Table 1. Population          
Area NameGeoIDItem201020112012201320142015Chg 10-15%Chg 10-15
Alameda County, CA06001P0000001 1,513,754 1,533,052 1,556,952 1,583,845 1,612,850 1,638,215 124,461 8.22
Alpine County, CA06003P0000001 1,159 1,111 1,126 1,144 1,107 1,110 -49 -4.23
Amador County, CA06005P0000001 37,873 37,538 37,099 36,591 36,744 37,001 -872 -2.30
Butte County, CA06007P0000001 219,977 220,019 221,205 222,154 224,033 225,411 5,434 2.47
Calaveras County, CA06009P0000001 45,464 45,101 44,755 44,574 44,575 44,828 -636 -1.40
Colusa County, CA06011P0000001 21,446 21,389 21,370 21,389 21,351 21,482 36 0.17
Contra Costa County, CA06013P0000001 1,052,921 1,066,636 1,079,290 1,095,959 1,111,710 1,126,745 73,824 7.01
Del Norte County, CA06015P0000001 28,566 28,468 28,201 27,821 27,194 27,254 -1,312 -4.59
El Dorado County, CA06017P0000001 181,148 180,905 180,579 181,480 183,050 184,452 3,304 1.82
Fresno County, CA06019P0000001 932,462 940,971 947,713 955,217 964,983 974,861 42,399 4.55
Glenn County, CA06021P0000001 28,110 28,199 27,955 27,943 28,030 28,017 -93 -0.33
Humboldt County, CA06023P0000001 135,026 135,267 134,703 134,640 134,831 135,727 701 0.52
Imperial County, CA06025P0000001 174,750 176,372 177,557 177,579 179,332 180,191 5,441 3.11
Inyo County, CA06027P0000001 18,513 18,399 18,405 18,403 18,396 18,260 -253 -1.37
Kern County, CA06029P0000001 841,682 849,949 856,576 865,787 874,190 882,176 40,494 4.81
Kings County, CA06031P0000001 152,367 151,969 151,201 150,748 150,108 150,965 -1,402 -0.92
Lake County, CA06033P0000001 64,744 64,264 63,974 63,803 64,156 64,591 -153 -0.24
Lassen County, CA06035P0000001 34,839 34,298 33,674 32,176 31,732 31,345 -3,494 -10.03
Los Angeles County, CA06037P0000001 9,826,009 9,896,602 9,970,436 10,045,175 10,109,436 10,170,292 344,283 3.50
Madera County, CA06039P0000001 151,125 152,089 152,160 152,125 154,562 154,998 3,873 2.56
Marin County, CA06041P0000001 252,903 255,403 256,021 258,552 260,550 261,221 8,318 3.29
Mariposa County, CA06043P0000001 18,260 18,191 17,855 17,734 17,636 17,531 -729 -3.99
Mendocino County, CA06045P0000001 87,811 87,495 87,522 87,373 87,683 87,649 -162 -0.18
Merced County, CA06047P0000001 256,832 259,784 261,788 263,312 266,087 268,455 11,623 4.53
Modoc County, CA06049P0000001 9,697 9,497 9,333 9,110 9,015 8,965 -732 -7.55
Mono County, CA06051P0000001 14,246 14,405 14,322 14,037 14,057 13,909 -337 -2.37
Monterey County, CA06053P0000001 416,413 421,466 426,441 429,109 431,293 433,898 17,485 4.20
Napa County, CA06055P0000001 136,810 137,998 139,055 140,413 141,551 142,456 5,646 4.13
Nevada County, CA06057P0000001 98,777 98,779 98,288 98,142 98,763 98,877 100 0.10
Orange County, CA06059P0000001 3,017,866 3,056,084 3,089,343 3,120,180 3,144,961 3,169,776 151,910 5.03
Placer County, CA06061P0000001 350,234 356,832 361,215 366,858 371,105 375,391 25,157 7.18
Plumas County, CA06063P0000001 19,918 19,684 19,326 18,841 18,570 18,409 -1,509 -7.58
Riverside County, CA06065P0000001 2,202,286 2,237,433 2,267,556 2,295,816 2,328,329 2,361,026 158,740 7.21
Sacramento County, CA06067P0000001 1,422,010 1,435,548 1,448,466 1,462,338 1,481,474 1,501,335 79,325 5.58
San Benito County, CA06069P0000001 55,557 56,197 56,885 57,605 58,308 58,792 3,235 5.82
San Bernardino County, CA06071P0000001 2,041,642 2,064,200 2,079,526 2,091,599 2,110,386 2,128,133 86,491 4.24
San Diego County, CA06073P0000001 3,104,386 3,142,256 3,184,358 3,223,645 3,265,700 3,299,521 195,135 6.29
San Francisco County, CA06075P0000001 805,813 816,231 829,517 840,715 852,537 864,816 59,003 7.32
San Joaquin County, CA06077P0000001 687,442 695,432 701,464 704,654 715,114 726,106 38,664 5.62
San Luis Obispo County, CA06079P0000001 269,905 271,208 274,552 276,308 279,116 281,401 11,496 4.26
San Mateo County, CA06081P0000001 719,973 729,435 740,645 750,109 758,333 765,135 45,162 6.27
Santa Barbara County, CA06083P0000001 424,379 426,131 430,873 436,248 441,228 444,769 20,390 4.80
Santa Clara County, CA06085P0000001 1,786,844 1,814,205 1,841,318 1,871,140 1,896,040 1,918,044 131,200 7.34
Santa Cruz County, CA06087P0000001 263,266 264,971 266,597 269,277 271,401 274,146 10,880 4.13
Shasta County, CA06089P0000001 177,317 177,969 178,421 179,041 179,747 179,533 2,216 1.25
Sierra County, CA06091P0000001 3,221 3,105 3,075 3,035 2,979 2,967 -254 -7.89
Siskiyou County, CA06093P0000001 44,940 44,672 44,148 43,635 43,465 43,554 -1,386 -3.08
Solano County, CA06095P0000001 414,062 416,754 420,360 424,770 430,791 436,092 22,030 5.32
Sonoma County, CA06097P0000001 484,791 487,778 490,746 495,046 499,674 502,146 17,355 3.58
Stanislaus County, CA06099P0000001 515,334 518,282 522,097 526,119 531,951 538,388 23,054 4.47
Sutter County, CA06101P0000001 94,802 94,659 94,479 95,032 95,604 96,463 1,661 1.75
Tehama County, CA06103P0000001 63,593 63,285 63,222 62,984 62,961 63,308 -285 -0.45
Trinity County, CA06105P0000001 13,764 13,723 13,508 13,436 13,128 13,069 -695 -5.05
Tulare County, CA06107P0000001 443,081 447,615 451,218 454,208 457,260 459,863 16,782 3.79
Tuolumne County, CA06109P0000001 55,185 54,746 54,129 53,940 53,872 53,709 -1,476 -2.67
Ventura County, CA06111P0000001 825,298 831,130 835,416 840,964 846,119 850,536 25,238 3.06
Yolo County, CA06113P0000001 201,129 202,283 205,093 206,958 209,250 213,016 11,887 5.91
Yuba County, CA06115P0000001 72,357 72,570 72,946 73,292 73,883 74,492 2,135 2.95
Total P0000001 37,334,079 37,700,034 38,056,055 38,414,128 38,792,291 39,144,818 1,810,739 4.85
Table 2. Births          
Area NameGeoIDItem201020112012201320142015Sum11-15 
Alameda County, CA06001B0000001 19,508 19,219 18,972 19,466 19,654 19,996 97,307 
Alpine County, CA06003B0000001 8 6 6 6 7 4 29 
Amador County, CA06005B0000001 312 264 280 251 282 268 1,345 
Butte County, CA06007B0000001 2,492 2,440 2,397 2,321 2,501 2,485 12,144 
Calaveras County, CA06009B0000001 296 333 356 323 348 349 1,709 
Colusa County, CA06011B0000001 280 336 302 314 312 316 1,580 
Contra Costa County, CA06013B0000001 12,044 12,335 11,941 12,245 12,192 12,534 61,247 
Del Norte County, CA06015B0000001 356 336 323 333 289 308 1,589 
El Dorado County, CA06017B0000001 1,528 1,631 1,598 1,494 1,553 1,575 7,851 
Fresno County, CA06019B0000001 15,572 16,321 15,950 15,725 15,954 16,002 79,952 
Glenn County, CA06021B0000001 428 426 374 383 398 411 1,992 
Humboldt County, CA06023B0000001 1,536 1,546 1,434 1,536 1,521 1,543 7,580 
Imperial County, CA06025B0000001 2,748 3,128 3,022 3,032 3,154 3,127 15,463 
Inyo County, CA06027B0000001 156 194 230 213 236 228 1,101 
Kern County, CA06029B0000001 13,948 14,405 14,206 14,411 14,331 14,429 71,782 
Kings County, CA06031B0000001 2,276 2,580 2,397 2,465 2,348 2,420 12,210 
Lake County, CA06033B0000001 648 743 726 740 762 776 3,747 
Lassen County, CA06035B0000001 340 299 303 283 302 281 1,468 
Los Angeles County, CA06037B0000001 126,960 132,649 129,157 130,647 129,468 130,070 651,991 
Madera County, CA06039B0000001 2,296 2,440 2,375 2,287 2,312 2,412 11,826 
Marin County, CA06041B0000001 2,352 2,384 2,327 2,322 2,310 2,290 11,633 
Mariposa County, CA06043B0000001 124 148 142 136 146 139 711 
Mendocino County, CA06045B0000001 1,220 1,010 1,122 1,059 1,047 1,025 5,263 
Merced County, CA06047B0000001 4,264 4,302 4,304 4,190 4,211 4,219 21,226 
Modoc County, CA06049B0000001 108 100 76 83 60 67 386 
Mono County, CA06051B0000001 124 153 145 137 147 145 727 
Monterey County, CA06053B0000001 6,692 6,863 6,808 6,563 6,514 6,618 33,366 
Napa County, CA06055B0000001 1,552 1,501 1,529 1,412 1,485 1,495 7,422 
Nevada County, CA06057B0000001 860 771 771 804 854 853 4,053 
Orange County, CA06059B0000001 37,216 38,238 37,842 37,621 37,706 37,776 189,183 
Placer County, CA06061B0000001 3,812 3,851 3,692 3,691 3,697 3,735 18,666 
Plumas County, CA06063B0000001 164 168 157 147 159 154 785 
Riverside County, CA06065B0000001 28,876 30,999 30,094 29,924 30,561 30,828 152,406 
Sacramento County, CA06067B0000001 20,104 20,194 19,537 19,410 19,687 19,781 98,609 
San Benito County, CA06069B0000001 760 763 716 741 758 769 3,747 
San Bernardino County, CA06071B0000001 29,860 31,432 30,164 30,580 30,489 30,817 153,482 
San Diego County, CA06073B0000001 42,876 44,694 43,841 43,749 44,184 44,561 221,029 
San Francisco County, CA06075B0000001 8,484 8,899 8,782 9,100 8,844 9,059 44,684 
San Joaquin County, CA06077B0000001 10,192 10,550 10,085 10,047 9,861 10,044 50,587 
San Luis Obispo County, CA06079B0000001 2,812 2,644 2,626 2,630 2,666 2,734 13,300 
San Mateo County, CA06081B0000001 9,140 9,141 9,012 9,068 8,897 9,034 45,152 
Santa Barbara County, CA06083B0000001 6,040 5,749 5,639 5,701 5,810 5,883 28,782 
Santa Clara County, CA06085B0000001 23,464 24,021 23,416 24,180 23,371 23,625 118,613 
Santa Cruz County, CA06087B0000001 3,244 3,245 3,163 2,986 2,870 2,934 15,198 
Shasta County, CA06089B0000001 2,132 2,107 2,058 2,108 2,160 2,162 10,595 
Sierra County, CA06091B0000001 28 17 21 19 12 10 79 
Siskiyou County, CA06093B0000001 360 462 494 453 462 464 2,335 
Solano County, CA06095B0000001 4,768 5,174 5,072 5,145 5,346 5,450 26,187 
Sonoma County, CA06097B0000001 5,684 5,310 5,045 5,067 5,068 5,116 25,606 
Stanislaus County, CA06099B0000001 7,692 7,785 7,697 7,501 7,659 7,736 38,378 
Sutter County, CA06101B0000001 1,300 1,335 1,320 1,228 1,310 1,302 6,495 
Tehama County, CA06103B0000001 720 735 723 726 807 754 3,745 
Trinity County, CA06105B0000001 132 112 114 118 100 100 544 
Tulare County, CA06107B0000001 7,416 8,151 8,020 7,767 7,680 7,751 39,369 
Tuolumne County, CA06109B0000001 520 444 462 460 478 481 2,325 
Ventura County, CA06111B0000001 11,068 11,009 10,529 10,533 10,508 10,605 53,184 
Yolo County, CA06113B0000001 2,272 2,423 2,321 2,506 2,529 2,579 12,358 
Yuba County, CA06115B0000001 1,132 1,252 1,216 1,230 1,206 1,220 6,124 
Total B0000001 493,296 509,767 497,431 499,617 499,583 503,849 2,510,247 
Table 3. Deaths          
Area NameGeoIDItem201020112012201320142015Sum11-15 
Alameda County, CA06001D0000001 8,580 9,072 9,205 9,619 9,955 10,261 48,112 
Alpine County, CA06003D0000001 16 7 6 7 8 7 35 
Amador County, CA06005D0000001 336 440 425 420 403 397 2,085 
Butte County, CA06007D0000001 2,092 2,178 2,247 2,308 2,304 2,296 11,333 
Calaveras County, CA06009D0000001 564 446 436 505 493 495 2,375 
Colusa County, CA06011D0000001 52 176 143 123 128 113 683 
Contra Costa County, CA06013D0000001 6,956 7,261 6,979 7,259 7,665 7,902 37,066 
Del Norte County, CA06015D0000001 372 296 284 275 258 248 1,361 
El Dorado County, CA06017D0000001 1,192 1,316 1,433 1,337 1,479 1,518 7,083 
Fresno County, CA06019D0000001 6,328 5,998 6,278 6,527 6,764 6,807 32,374 
Glenn County, CA06021D0000001 116 235 241 212 233 214 1,135 
Humboldt County, CA06023D0000001 1,172 1,188 1,282 1,287 1,346 1,286 6,389 
Imperial County, CA06025D0000001 720 982 956 977 978 967 4,860 
Inyo County, CA06027D0000001 136 201 206 200 195 186 988 
Kern County, CA06029D0000001 5,412 5,404 5,250 5,652 5,908 5,830 28,044 
Kings County, CA06031D0000001 900 748 807 799 832 823 4,009 
Lake County, CA06033D0000001 676 794 840 827 811 785 4,057 
Lassen County, CA06035D0000001 368 199 270 224 229 211 1,133 
Los Angeles County, CA06037D0000001 55,256 58,218 58,038 60,162 62,467 64,212 303,097 
Madera County, CA06039D0000001 1,300 1,008 1,043 1,036 1,004 980 5,071 
Marin County, CA06041D0000001 1,892 1,831 1,873 1,893 1,888 1,862 9,347 
Mariposa County, CA06043D0000001 88 155 155 202 166 162 840 
Mendocino County, CA06045D0000001 712 838 811 850 843 839 4,181 
Merced County, CA06047D0000001 1,728 1,461 1,571 1,617 1,702 1,658 8,009 
Modoc County, CA06049D0000001 68 99 122 112 101 107 541 
Mono County, CA06051D0000001 80 38 49 51 44 41 223 
Monterey County, CA06053D0000001 2,072 2,311 2,357 2,435 2,488 2,484 12,075 
Napa County, CA06055D0000001 1,304 1,159 1,135 1,253 1,230 1,251 6,028 
Nevada County, CA06057D0000001 768 925 914 977 933 893 4,642 
Orange County, CA06059D0000001 17,264 17,679 17,819 18,757 19,383 19,480 93,118 
Placer County, CA06061D0000001 2,844 2,813 2,802 2,886 3,041 3,010 14,552 
Plumas County, CA06063D0000001 348 225 205 265 217 211 1,123 
Riverside County, CA06065D0000001 13,500 14,468 14,611 14,993 15,837 16,108 76,017 
Sacramento County, CA06067D0000001 9,956 10,196 10,452 10,436 11,091 11,188 53,363 
San Benito County, CA06069D0000001 140 268 276 321 315 303 1,483 
San Bernardino County, CA06071D0000001 12,248 12,206 12,111 12,710 13,736 13,769 64,532 
San Diego County, CA06073D0000001 18,708 19,686 19,881 20,712 21,141 21,580 103,000 
San Francisco County, CA06075D0000001 5,068 5,758 5,558 5,774 5,941 6,079 29,110 
San Joaquin County, CA06077D0000001 4,368 4,756 4,969 4,958 5,130 5,171 24,984 
San Luis Obispo County, CA06079D0000001 2,052 2,252 2,260 2,271 2,209 2,249 11,241 
San Mateo County, CA06081D0000001 4,436 4,557 4,666 4,727 4,887 4,976 23,813 
Santa Barbara County, CA06083D0000001 3,052 2,873 2,862 2,982 3,009 3,045 14,771 
Santa Clara County, CA06085D0000001 8,688 9,161 9,323 9,455 10,172 10,470 48,581 
Santa Cruz County, CA06087D0000001 1,748 1,707 1,687 1,754 1,794 1,836 8,778 
Shasta County, CA06089D0000001 1,856 2,077 2,070 2,143 2,145 2,085 10,520 
Sierra County, CA06091D0000001 80 35 31 38 37 39 180 
Siskiyou County, CA06093D0000001 436 542 532 577 527 543 2,721 
Solano County, CA06095D0000001 2,552 2,876 2,915 2,962 3,250 3,270 15,273 
Sonoma County, CA06097D0000001 3,796 3,869 3,850 3,907 4,209 4,174 20,009 
Stanislaus County, CA06099D0000001 3,636 3,671 3,805 3,852 3,978 3,826 19,132 
Sutter County, CA06101D0000001 868 732 734 738 753 744 3,701 
Tehama County, CA06103D0000001 644 600 564 638 574 597 2,973 
Trinity County, CA06105D0000001 216 161 146 158 161 162 788 
Tulare County, CA06107D0000001 2,552 2,823 2,797 2,830 2,927 2,908 14,285 
Tuolumne County, CA06109D0000001 480 614 630 602 607 545 2,998 
Ventura County, CA06111D0000001 5,056 5,085 5,007 5,361 5,689 5,682 26,824 
Yolo County, CA06113D0000001 900 1,237 1,189 1,310 1,185 1,246 6,167 
Yuba County, CA06115D0000001 388 555 532 591 509 493 2,680 
Total D0000001 229,136 238,466 239,640 247,854 257,309 260,624 1,243,893 
Table 4. Natural Change          
Area NameGeoIDItem201020112012201320142015Sum11-15 
Alameda County, CA06001NC000001 10,928 10,147 9,767 9,847 9,699 9,735 49,195 
Alpine County, CA06003NC000001 -8 -1 0 -1 -1 -3 -6 
Amador County, CA06005NC000001 -24 -176 -145 -169 -121 -129 -740 
Butte County, CA06007NC000001 400 262 150 13 197 189 811 
Calaveras County, CA06009NC000001 -268 -113 -80 -182 -145 -146 -666 
Colusa County, CA06011NC000001 228 160 159 191 184 203 897 
Contra Costa County, CA06013NC000001 5,088 5,074 4,962 4,986 4,527 4,632 24,181 
Del Norte County, CA06015NC000001 -16 40 39 58 31 60 228 
El Dorado County, CA06017NC000001 336 315 165 157 74 57 768 
Fresno County, CA06019NC000001 9,244 10,323 9,672 9,198 9,190 9,195 47,578 
Glenn County, CA06021NC000001 312 191 133 171 165 197 857 
Humboldt County, CA06023NC000001 364 358 152 249 175 257 1,191 
Imperial County, CA06025NC000001 2,028 2,146 2,066 2,055 2,176 2,160 10,603 
Inyo County, CA06027NC000001 20 -7 24 13 41 42 113 
Kern County, CA06029NC000001 8,536 9,001 8,956 8,759 8,423 8,599 43,738 
Kings County, CA06031NC000001 1,376 1,832 1,590 1,666 1,516 1,597 8,201 
Lake County, CA06033NC000001 -28 -51 -114 -87 -49 -9 -310 
Lassen County, CA06035NC000001 -28 100 33 59 73 70 335 
Los Angeles County, CA06037NC000001 71,704 74,431 71,119 70,485 67,001 65,858 348,894 
Madera County, CA06039NC000001 996 1,432 1,332 1,251 1,308 1,432 6,755 
Marin County, CA06041NC000001 460 553 454 429 422 428 2,286 
Mariposa County, CA06043NC000001 36 -7 -13 -66 -20 -23 -129 
Mendocino County, CA06045NC000001 508 172 311 209 204 186 1,082 
Merced County, CA06047NC000001 2,536 2,841 2,733 2,573 2,509 2,561 13,217 
Modoc County, CA06049NC000001 40 1 -46 -29 -41 -40 -155 
Mono County, CA06051NC000001 44 115 96 86 103 104 504 
Monterey County, CA06053NC000001 4,620 4,552 4,451 4,128 4,026 4,134 21,291 
Napa County, CA06055NC000001 248 342 394 159 255 244 1,394 
Nevada County, CA06057NC000001 92 -154 -143 -173 -79 -40 -589 
Orange County, CA06059NC000001 19,952 20,559 20,023 18,864 18,323 18,296 96,065 
Placer County, CA06061NC000001 968 1,038 890 805 656 725 4,114 
Plumas County, CA06063NC000001 -184 -57 -48 -118 -58 -57 -338 
Riverside County, CA06065NC000001 15,376 16,531 15,483 14,931 14,724 14,720 76,389 
Sacramento County, CA06067NC000001 10,148 9,998 9,085 8,974 8,596 8,593 45,246 
San Benito County, CA06069NC000001 620 495 440 420 443 466 2,264 
San Bernardino County, CA06071NC000001 17,612 19,226 18,053 17,870 16,753 17,048 88,950 
San Diego County, CA06073NC000001 24,168 25,008 23,960 23,037 23,043 22,981 118,029 
San Francisco County, CA06075NC000001 3,416 3,141 3,224 3,326 2,903 2,980 15,574 
San Joaquin County, CA06077NC000001 5,824 5,794 5,116 5,089 4,731 4,873 25,603 
San Luis Obispo County, CA06079NC000001 760 392 366 359 457 485 2,059 
San Mateo County, CA06081NC000001 4,704 4,584 4,346 4,341 4,010 4,058 21,339 
Santa Barbara County, CA06083NC000001 2,988 2,876 2,777 2,719 2,801 2,838 14,011 
Santa Clara County, CA06085NC000001 14,776 14,860 14,093 14,725 13,199 13,155 70,032 
Santa Cruz County, CA06087NC000001 1,496 1,538 1,476 1,232 1,076 1,098 6,420 
Shasta County, CA06089NC000001 276 30 -12 -35 15 77 75 
Sierra County, CA06091NC000001 -52 -18 -10 -19 -25 -29 -101 
Siskiyou County, CA06093NC000001 -76 -80 -38 -124 -65 -79 -386 
Solano County, CA06095NC000001 2,216 2,298 2,157 2,183 2,096 2,180 10,914 
Sonoma County, CA06097NC000001 1,888 1,441 1,195 1,160 859 942 5,597 
Stanislaus County, CA06099NC000001 4,056 4,114 3,892 3,649 3,681 3,910 19,246 
Sutter County, CA06101NC000001 432 603 586 490 557 558 2,794 
Tehama County, CA06103NC000001 76 135 159 88 233 157 772 
Trinity County, CA06105NC000001 -84 -49 -32 -40 -61 -62 -244 
Tulare County, CA06107NC000001 4,864 5,328 5,223 4,937 4,753 4,843 25,084 
Tuolumne County, CA06109NC000001 40 -170 -168 -142 -129 -64 -673 
Ventura County, CA06111NC000001 6,012 5,924 5,522 5,172 4,819 4,923 26,360 
Yolo County, CA06113NC000001 1,372 1,186 1,132 1,196 1,344 1,333 6,191 
Yuba County, CA06115NC000001 744 697 684 639 697 727 3,444 
Total NC000001 264,160 271,301 257,791 251,763 242,274 243,225 1,266,354 
Table 5. International Migration          
Area NameGeoIDItem201020112012201320142015Sum11-15 
Alameda County, CA06001MI000001 8,664 10,510 10,304 11,324 12,869 12,871 57,878 
Alpine County, CA06003MI000001 0 1 1 1 1 1 5 
Amador County, CA06005MI000001 12 9 14 18 19 19 79 
Butte County, CA06007MI000001 228 167 187 199 251 261 1,065 
Calaveras County, CA06009MI000001 20 18 15 20 21 21 95 
Colusa County, CA06011MI000001 28 28 21 25 30 30 134 
Contra Costa County, CA06013MI000001 3,092 3,939 3,729 4,127 4,775 4,792 21,362 
Del Norte County, CA06015MI000001 12 11 11 16 22 22 82 
El Dorado County, CA06017MI000001 164 158 154 177 208 208 905 
Fresno County, CA06019MI000001 1,304 1,868 1,575 1,833 2,165 2,222 9,663 
Glenn County, CA06021MI000001 4 14 9 17 20 21 81 
Humboldt County, CA06023MI000001 108 95 112 117 129 136 589 
Imperial County, CA06025MI000001 -60 398 287 305 386 416 1,792 
Inyo County, CA06027MI000001 0 3 3 5 6 6 23 
Kern County, CA06029MI000001 1,296 1,886 1,730 1,859 2,154 2,220 9,849 
Kings County, CA06031MI000001 384 206 460 339 361 422 1,788 
Lake County, CA06033MI000001 16 3 4 10 20 24 61 
Lassen County, CA06035MI000001 12 36 27 34 42 41 180 
Los Angeles County, CA06037MI000001 39,496 49,224 44,192 49,142 56,527 56,684 255,769 
Madera County, CA06039MI000001 52 173 117 158 217 236 901 
Marin County, CA06041MI000001 720 820 718 802 937 944 4,221 
Mariposa County, CA06043MI000001 8 10 7 9 11 11 48 
Mendocino County, CA06045MI000001 100 93 70 77 95 99 434 
Merced County, CA06047MI000001 288 485 402 467 572 583 2,509 
Modoc County, CA06049MI000001 0 13 11 12 14 15 65 
Mono County, CA06051MI000001 16 24 38 30 33 37 162 
Monterey County, CA06053MI000001 796 950 1,088 1,069 1,260 1,391 5,758 
Napa County, CA06055MI000001 320 455 404 437 513 524 2,333 
Nevada County, CA06057MI000001 60 23 23 34 43 48 171 
Orange County, CA06059MI000001 9,392 12,271 11,605 12,958 14,981 15,061 66,876 
Placer County, CA06061MI000001 616 497 492 539 643 660 2,831 
Plumas County, CA06063MI000001 8 10 9 10 12 11 52 
Riverside County, CA06065MI000001 2,204 3,993 3,720 4,095 4,834 4,973 21,615 
Sacramento County, CA06067MI000001 3,560 4,637 4,629 5,156 5,936 5,973 26,331 
San Benito County, CA06069MI000001 40 61 42 49 66 68 286 
San Bernardino County, CA06071MI000001 2,792 3,372 3,815 3,705 4,189 4,424 19,505 
San Diego County, CA06073MI000001 12,504 12,580 17,517 15,996 17,080 18,468 81,641 
San Francisco County, CA06075MI000001 5,884 6,946 6,777 7,444 8,483 8,476 38,126 
San Joaquin County, CA06077MI000001 1,236 1,679 1,427 1,622 1,931 1,974 8,633 
San Luis Obispo County, CA06079MI000001 140 197 197 220 266 275 1,155 
San Mateo County, CA06081MI000001 3,568 4,296 4,112 4,560 5,212 5,215 23,395 
Santa Barbara County, CA06083MI000001 1,024 1,365 1,293 1,401 1,643 1,715 7,417 
Santa Clara County, CA06085MI000001 13,532 16,008 15,832 17,446 19,862 19,830 88,978 
Santa Cruz County, CA06087MI000001 188 393 283 356 452 464 1,948 
Shasta County, CA06089MI000001 172 183 178 199 236 237 1,033 
Sierra County, CA06091MI000001 0 2 1 1 1 1 6 
Siskiyou County, CA06093MI000001 32 18 19 25 33 35 130 
Solano County, CA06095MI000001 1,308 1,158 1,559 1,383 1,502 1,573 7,175 
Sonoma County, CA06097MI000001 412 569 477 571 690 717 3,024 
Stanislaus County, CA06099MI000001 872 1,190 1,120 1,295 1,510 1,525 6,640 
Sutter County, CA06101MI000001 448 381 410 440 485 491 2,207 
Tehama County, CA06103MI000001 64 67 61 64 72 73 337 
Trinity County, CA06105MI000001 0 2 1 1 1 1 6 
Tulare County, CA06107MI000001 -76 398 249 345 482 526 2,000 
Tuolumne County, CA06109MI000001 36 51 47 51 59 59 267 
Ventura County, CA06111MI000001 1,232 1,649 1,554 1,685 2,011 2,112 9,011 
Yolo County, CA06113MI000001 884 1,015 1,013 1,116 1,267 1,273 5,684 
Yuba County, CA06115MI000001 208 90 198 164 174 207 833 
Total MI000001 119,420 146,698 144,350 155,560 177,814 180,722 805,144 
Table 6. Domestic Migration          
Area NameGeoIDItem201020112012201320142015Sum11-15 
Alameda County, CA06001MD000001 -5,748 -554 3,845 5,879 7,091 3,481 19,742 
Alpine County, CA06003MD000001 -56 -54 13 18 -37 7 -53 
Amador County, CA06005MD000001 -900 -142 -315 -359 266 370 -180 
Butte County, CA06007MD000001 -712 -267 868 601 1,407 684 3,293 
Calaveras County, CA06009MD000001 -184 -274 -272 27 164 385 30 
Colusa County, CA06011MD000001 -136 -241 -195 -196 -256 -68 -956 
Contra Costa County, CA06013MD000001 6,512 4,942 3,970 6,923 6,769 5,409 28,013 
Del Norte County, CA06015MD000001 -184 -143 -320 -433 -688 -26 -1,610 
El Dorado County, CA06017MD000001 -116 -628 -664 501 1,310 1,107 1,626 
Fresno County, CA06019MD000001 -2,556 -3,488 -4,561 -3,760 -1,345 -2,022 -15,176 
Glenn County, CA06021MD000001 -348 -123 -398 -211 -84 -193 -1,009 
Humboldt County, CA06023MD000001 1,064 -137 -826 -356 -36 433 -922 
Imperial County, CA06025MD000001 -1,112 -934 -1,190 -2,440 -827 -1,855 -7,246 
Inyo County, CA06027MD000001 -140 -111 -20 -31 -63 -196 -421 
Kern County, CA06029MD000001 -1,716 -2,379 -4,107 -1,273 -1,709 -2,716 -12,184 
Kings County, CA06031MD000001 -4,480 -2,467 -2,867 -2,458 -2,560 -1,166 -11,518 
Lake County, CA06033MD000001 316 -386 -172 -77 389 348 102 
Lassen County, CA06035MD000001 -204 -684 -692 -1,601 -559 -473 -4,009 
Los Angeles County, CA06037MD000001 -84,112 -49,301 -40,442 -43,357 -54,360 -61,120 -248,580 
Madera County, CA06039MD000001 -16 -575 -1,413 -1,379 942 -1,110 -3,535 
Marin County, CA06041MD000001 796 1,297 -548 1,311 818 -434 2,444 
Mariposa County, CA06043MD000001 12 -79 -333 -21 -82 -15 -530 
Mendocino County, CA06045MD000001 -720 -577 -342 -412 83 -287 -1,535 
Merced County, CA06047MD000001 1,288 -331 -1,144 -1,501 -173 -647 -3,796 
Modoc County, CA06049MD000001 12 -220 -126 -192 -80 2 -616 
Mono County, CA06051MD000001 112 -6 -218 -369 -136 -286 -1,015 
Monterey County, CA06053MD000001 100 -253 -494 -2,512 -2,989 -2,880 -9,128 
Napa County, CA06055MD000001 568 406 270 701 412 10 1,799 
Nevada County, CA06057MD000001 12 169 -362 56 720 164 747 
Orange County, CA06059MD000001 1,316 6,052 1,900 -1,527 -7,439 -10,049 -11,063 
Placer County, CA06061MD000001 5,424 4,668 3,060 4,460 2,573 2,901 17,662 
Plumas County, CA06063MD000001 -188 -203 -316 -320 -248 -66 -1,153 
Riverside County, CA06065MD000001 31,084 14,127 11,095 9,010 12,266 11,822 58,320 
Sacramento County, CA06067MD000001 -328 -1,022 -627 -868 4,514 4,112 6,109 
San Benito County, CA06069MD000001 472 108 208 227 212 -32 723 
San Bernardino County, CA06071MD000001 5,344 262 -6,567 -10,191 -1,801 -4,798 -23,095 
San Diego County, CA06073MD000001 -268 1,108 745 -790 2,132 -9,372 -6,177 
San Francisco County, CA06075MD000001 -6,652 250 3,198 952 291 1,720 6,411 
San Joaquin County, CA06077MD000001 1,568 550 -482 -3,914 3,796 3,745 3,695 
San Luis Obispo County, CA06079MD000001 416 786 2,748 1,072 1,984 1,205 7,795 
San Mateo County, CA06081MD000001 -2,272 947 2,766 1,057 -811 -1,623 2,336 
Santa Barbara County, CA06083MD000001 -2,372 -2,307 680 1,094 630 -1,237 -1,140 
Santa Clara County, CA06085MD000001 -7,820 -2,566 -2,503 -1,885 -7,483 -10,077 -24,514 
Santa Cruz County, CA06087MD000001 1,800 -138 -110 957 658 1,015 2,382 
Shasta County, CA06089MD000001 -40 324 314 351 441 -709 721 
Sierra County, CA06091MD000001 -20 -108 -22 -23 -32 25 -160 
Siskiyou County, CA06093MD000001 224 -172 -504 -401 -112 107 -1,082 
Solano County, CA06095MD000001 -584 -703 -75 686 2,299 1,270 3,477 
Sonoma County, CA06097MD000001 1,388 988 1,350 2,383 2,879 404 8,004 
Stanislaus County, CA06099MD000001 -1,436 -2,309 -1,188 -1,067 697 621 -3,246 
Sutter County, CA06101MD000001 -632 -1,118 -1,206 -436 -477 -275 -3,512 
Tehama County, CA06103MD000001 376 -527 -279 -357 -350 167 -1,346 
Trinity County, CA06105MD000001 0 16 -178 -5 -265 55 -377 
Tulare County, CA06107MD000001 -1,212 -1,046 -1,869 -2,146 -1,986 -2,786 -9,833 
Tuolumne County, CA06109MD000001 -800 -334 -495 -85 50 -94 -958 
Ventura County, CA06111MD000001 440 -1,532 -2,831 -1,649 -1,584 -2,905 -10,501 
Yolo County, CA06113MD000001 -1,208 -1,081 668 -446 -289 1,015 -133 
Yuba County, CA06115MD000001 -124 -567 -507 -448 -241 -286 -2,049 
Total MD000001 -68,752 -43,087 -44,082 -51,230 -33,309 -77,219 -248,927 
Table 7. Net Migration          
Area NameGeoIDItem201020112012201320142015Sum11-15 
Alameda County, CA06001MN000001 2,916 9,956 14,149 17,203 19,960 16,352 77,620 
Alpine County, CA06003MN000001 -56 -53 14 19 -36 8 -48 
Amador County, CA06005MN000001 -888 -133 -301 -341 285 389 -101 
Butte County, CA06007MN000001 -484 -100 1,055 800 1,658 945 4,358 
Calaveras County, CA06009MN000001 -164 -256 -257 47 185 406 125 
Colusa County, CA06011MN000001 -108 -213 -174 -171 -226 -38 -822 
Contra Costa County, CA06013MN000001 9,604 8,881 7,699 11,050 11,544 10,201 49,375 
Del Norte County, CA06015MN000001 -172 -132 -309 -417 -666 -4 -1,528 
El Dorado County, CA06017MN000001 48 -470 -510 678 1,518 1,315 2,531 
Fresno County, CA06019MN000001 -1,252 -1,620 -2,986 -1,927 820 200 -5,513 
Glenn County, CA06021MN000001 -344 -109 -389 -194 -64 -172 -928 
Humboldt County, CA06023MN000001 1,172 -42 -714 -239 93 569 -333 
Imperial County, CA06025MN000001 -1,172 -536 -903 -2,135 -441 -1,439 -5,454 
Inyo County, CA06027MN000001 -140 -108 -17 -26 -57 -190 -398 
Kern County, CA06029MN000001 -420 -493 -2,377 586 445 -496 -2,335 
Kings County, CA06031MN000001 -4,096 -2,261 -2,407 -2,119 -2,199 -744 -9,730 
Lake County, CA06033MN000001 332 -383 -168 -67 409 372 163 
Lassen County, CA06035MN000001 -192 -648 -665 -1,567 -517 -432 -3,829 
Los Angeles County, CA06037MN000001 -44,616 -77 3,750 5,785 2,167 -4,436 7,189 
Madera County, CA06039MN000001 36 -402 -1,296 -1,221 1,159 -874 -2,634 
Marin County, CA06041MN000001 1,516 2,117 170 2,113 1,755 510 6,665 
Mariposa County, CA06043MN000001 20 -69 -326 -12 -71 -4 -482 
Mendocino County, CA06045MN000001 -620 -484 -272 -335 178 -188 -1,101 
Merced County, CA06047MN000001 1,576 154 -742 -1,034 399 -64 -1,287 
Modoc County, CA06049MN000001 12 -207 -115 -180 -66 17 -551 
Mono County, CA06051MN000001 128 18 -180 -339 -103 -249 -853 
Monterey County, CA06053MN000001 896 697 594 -1,443 -1,729 -1,489 -3,370 
Napa County, CA06055MN000001 888 861 674 1,138 925 534 4,132 
Nevada County, CA06057MN000001 72 192 -339 90 763 212 918 
Orange County, CA06059MN000001 10,708 18,323 13,505 11,431 7,542 5,012 55,813 
Placer County, CA06061MN000001 6,040 5,165 3,552 4,999 3,216 3,561 20,493 
Plumas County, CA06063MN000001 -180 -193 -307 -310 -236 -55 -1,101 
Riverside County, CA06065MN000001 33,288 18,120 14,815 13,105 17,100 16,795 79,935 
Sacramento County, CA06067MN000001 3,232 3,615 4,002 4,288 10,450 10,085 32,440 
San Benito County, CA06069MN000001 512 169 250 276 278 36 1,009 
San Bernardino County, CA06071MN000001 8,136 3,634 -2,752 -6,486 2,388 -374 -3,590 
San Diego County, CA06073MN000001 12,236 13,688 18,262 15,206 19,212 9,096 75,464 
San Francisco County, CA06075MN000001 -768 7,196 9,975 8,396 8,774 10,196 44,537 
San Joaquin County, CA06077MN000001 2,804 2,229 945 -2,292 5,727 5,719 12,328 
San Luis Obispo County, CA06079MN000001 556 983 2,945 1,292 2,250 1,480 8,950 
San Mateo County, CA06081MN000001 1,296 5,243 6,878 5,617 4,401 3,592 25,731 
Santa Barbara County, CA06083MN000001 -1,348 -942 1,973 2,495 2,273 478 6,277 
Santa Clara County, CA06085MN000001 5,712 13,442 13,329 15,561 12,379 9,753 64,464 
Santa Cruz County, CA06087MN000001 1,988 255 173 1,313 1,110 1,479 4,330 
Shasta County, CA06089MN000001 132 507 492 550 677 -472 1,754 
Sierra County, CA06091MN000001 -20 -106 -21 -22 -31 26 -154 
Siskiyou County, CA06093MN000001 256 -154 -485 -376 -79 142 -952 
Solano County, CA06095MN000001 724 455 1,484 2,069 3,801 2,843 10,652 
Sonoma County, CA06097MN000001 1,800 1,557 1,827 2,954 3,569 1,121 11,028 
Stanislaus County, CA06099MN000001 -564 -1,119 -68 228 2,207 2,146 3,394 
Sutter County, CA06101MN000001 -184 -737 -796 4 8 216 -1,305 
Tehama County, CA06103MN000001 440 -460 -218 -293 -278 240 -1,009 
Trinity County, CA06105MN000001 0 18 -177 -4 -264 56 -371 
Tulare County, CA06107MN000001 -1,288 -648 -1,620 -1,801 -1,504 -2,260 -7,833 
Tuolumne County, CA06109MN000001 -764 -283 -448 -34 109 -35 -691 
Ventura County, CA06111MN000001 1,672 117 -1,277 36 427 -793 -1,490 
Yolo County, CA06113MN000001 -324 -66 1,681 670 978 2,288 5,551 
Yuba County, CA06115MN000001 84 -477 -309 -284 -67 -79 -1,216 
Total MN000001 50,668 103,611 100,268 104,330 144,505 103,503 556,217 
Table 8. Group Quarters          
Area NameGeoIDItem201020112012201320142015Chg10-15%Chg 10-15
Alameda County, CA06001GQ000001 37,426 37,386 36,518 36,529 37,088 36,752 -674 -1.80
Alpine County, CA06003GQ000001 24 24 24 24 24 24 0 0.00
Amador County, CA06005GQ000001 4,370 4,188 3,873 3,297 3,290 3,286 -1,084 -24.81
Butte County, CA06007GQ000001 4,902 4,857 5,277 5,322 5,324 5,420 518 10.57
Calaveras County, CA06009GQ000001 493 493 493 493 494 491 -2 -0.41
Colusa County, CA06011GQ000001 225 225 248 243 261 261 36 16.00
Contra Costa County, CA06013GQ000001 10,605 10,768 10,765 10,707 10,555 10,784 179 1.69
Del Norte County, CA06015GQ000001 3,776 3,716 3,649 3,446 3,137 3,113 -663 -17.56
El Dorado County, CA06017GQ000001 1,642 1,635 1,641 1,637 1,687 1,692 50 3.05
Fresno County, CA06019GQ000001 17,201 16,834 16,311 16,818 17,315 17,885 684 3.98
Glenn County, CA06021GQ000001 316 316 316 325 337 317 1 0.32
Humboldt County, CA06023GQ000001 5,282 5,537 5,532 5,481 5,455 5,488 206 3.90
Imperial County, CA06025GQ000001 10,432 10,131 10,047 8,780 8,790 8,914 -1,518 -14.55
Inyo County, CA06027GQ000001 434 437 433 432 439 429 -5 -1.15
Kern County, CA06029GQ000001 36,505 36,147 32,177 31,053 31,756 32,500 -4,005 -10.97
Kings County, CA06031GQ000001 20,893 20,103 19,444 18,369 17,011 16,752 -4,141 -19.82
Lake County, CA06033GQ000001 1,085 1,085 1,126 1,111 1,167 1,195 110 10.14
Lassen County, CA06035GQ000001 9,829 9,821 9,598 8,577 8,708 8,287 -1,542 -15.69
Los Angeles County, CA06037GQ000001 171,417 170,838 172,782 175,977 177,937 178,627 7,210 4.21
Madera County, CA06039GQ000001 8,520 8,446 7,359 6,733 8,177 7,810 -710 -8.33
Marin County, CA06041GQ000001 9,194 9,336 8,589 8,230 8,336 8,347 -847 -9.21
Mariposa County, CA06043GQ000001 725 725 725 725 725 725 0 0.00
Mendocino County, CA06045GQ000001 2,005 1,953 1,990 1,941 1,987 1,975 -30 -1.50
Merced County, CA06047GQ000001 5,132 5,366 5,608 5,641 6,447 6,438 1,306 25.45
Modoc County, CA06049GQ000001 359 361 357 357 357 356 -3 -0.84
Mono County, CA06051GQ000001 272 333 326 337 337 338 66 24.26
Monterey County, CA06053GQ000001 18,963 19,222 19,460 18,574 17,600 17,453 -1,510 -7.96
Napa County, CA06055GQ000001 4,970 5,018 5,023 5,044 5,027 5,043 73 1.47
Nevada County, CA06057GQ000001 1,175 1,175 1,175 1,175 1,154 1,220 45 3.83
Orange County, CA06059GQ000001 40,257 41,132 43,192 43,562 43,400 43,952 3,695 9.18
Placer County, CA06061GQ000001 3,783 3,749 3,807 3,841 3,853 3,882 99 2.62
Plumas County, CA06063GQ000001 277 277 279 277 277 277 0 0.00
Riverside County, CA06065GQ000001 35,586 35,160 35,768 34,335 33,618 33,280 -2,306 -6.48
Sacramento County, CA06067GQ000001 23,752 23,733 23,326 22,250 23,213 23,132 -620 -2.61
San Benito County, CA06069GQ000001 322 415 410 403 396 400 78 24.22
San Bernardino County, CA06071GQ000001 40,118 40,210 40,203 39,314 40,548 39,184 -934 -2.33
San Diego County, CA06073GQ000001 101,176 100,223 102,623 101,258 104,560 106,429 5,253 5.19
San Francisco County, CA06075GQ000001 24,195 24,097 23,968 23,971 24,010 23,578 -617 -2.55
San Joaquin County, CA06077GQ000001 14,263 14,159 13,648 12,707 14,178 14,857 594 4.16
San Luis Obispo County, CA06079GQ000001 16,849 16,704 17,332 16,313 16,607 15,751 -1,098 -6.52
San Mateo County, CA06081GQ000001 8,872 8,860 8,794 8,851 8,849 8,855 -17 -0.19
Santa Barbara County, CA06083GQ000001 17,599 17,402 18,299 18,756 19,050 19,094 1,495 8.49
Santa Clara County, CA06085GQ000001 30,047 29,665 30,110 30,474 30,958 30,891 844 2.81
Santa Cruz County, CA06087GQ000001 11,583 12,199 12,546 12,897 12,896 13,426 1,843 15.91
Shasta County, CA06089GQ000001 2,654 2,657 2,648 2,654 2,746 2,764 110 4.14
Sierra County, CA06091GQ000001 33 33 33 33 33 33 0 0.00
Siskiyou County, CA06093GQ000001 516 591 585 582 578 563 47 9.11
Solano County, CA06095GQ000001 12,405 12,362 11,864 11,494 11,256 11,109 -1,296 -10.45
Sonoma County, CA06097GQ000001 10,229 10,415 10,727 10,720 10,757 10,424 195 1.91
Stanislaus County, CA06099GQ000001 6,328 6,348 6,440 6,397 6,309 6,477 149 2.35
Sutter County, CA06101GQ000001 1,060 1,061 755 802 799 839 -221 -20.85
Tehama County, CA06103GQ000001 844 849 850 851 846 844 0 0.00
Trinity County, CA06105GQ000001 385 386 386 385 390 385 0 0.00
Tulare County, CA06107GQ000001 4,774 4,734 4,964 4,968 4,942 4,956 182 3.81
Tuolumne County, CA06109GQ000001 4,418 4,341 4,083 3,842 3,851 3,511 -907 -20.53
Ventura County, CA06111GQ000001 10,679 10,622 10,709 11,085 10,761 11,129 450 4.21
Yolo County, CA06113GQ000001 6,734 6,751 7,650 7,861 7,232 7,812 1,078 16.01
Yuba County, CA06115GQ000001 1,171 1,171 1,161 1,185 1,185 1,238 67 5.72
Total GQ000001 819,081 816,782 818,026 809,446 819,020 820,994 1,913 0.23

Source: developed by ProximityOne based on Census Bureau and other data.
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