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Iowa City, IA MSA Regional Analytics
  -- Population & Components of Change; 2010-15

Components of Change: 7/1/2010-6/30/2015
Natural Change 6,036
  equals Births 10,435
  less Deaths 4,399
Net Migration 7,327
  equals net International Migration 4,670
  plus net Domestic Migration 2,657

The population of the Iowa City, IA MSA changed from 152,988 on 2010 to 166,498 in 2015 -- a change of 13,510 (8.83%). 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 metro and metro 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), net migration (7,327) exceeded natural change (6,036); net migration has been the primary contributing factor for the metro population change. Examine the metro by county tables below to learn about how each county contributes to the metro population growth or decline.

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Related Sections
  • Iowa City, IA MSA S&O Report
  • 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
Johnson County, IA19103P0000001 131,291 133,733 136,923 139,851 142,421 144,251 12,960 9.87
Washington County, IA19183P0000001 21,697 21,829 21,919 22,003 22,087 22,247 550 2.53
Total P0000001 152,988 155,562 158,842 161,854 164,508 166,498 13,510 8.83
Table 2. Births          
Area NameGeoIDItem201020112012201320142015Sum11-15 
Johnson County, IA19103B0000001 1,812 1,761 1,792 1,807 1,783 1,811 8,954 
Washington County, IA19183B0000001 292 279 265 301 312 324 1,481 
Total B0000001 2,104 2,040 2,057 2,108 2,095 2,135 10,435 
Table 3. Deaths          
Area NameGeoIDItem201020112012201320142015Sum11-15 
Johnson County, IA19103D0000001 656 576 632 684 672 675 3,239 
Washington County, IA19183D0000001 268 269 227 222 228 214 1,160 
Total D0000001 924 845 859 906 900 889 4,399 
Table 4. Natural Change          
Area NameGeoIDItem201020112012201320142015Sum11-15 
Johnson County, IA19103NC000001 1,156 1,185 1,160 1,123 1,111 1,136 5,715 
Washington County, IA19183NC000001 24 10 38 79 84 110 321 
Total NC000001 1,180 1,195 1,198 1,202 1,195 1,246 6,036 
Table 5. International Migration          
Area NameGeoIDItem201020112012201320142015Sum11-15 
Johnson County, IA19103MI000001 672 815 846 920 1,040 1,036 4,657 
Washington County, IA19183MI000001 8 3 2 2 3 3 13 
Total MI000001 680 818 848 922 1,043 1,039 4,670 
Table 6. Domestic Migration          
Area NameGeoIDItem201020112012201320142015Sum11-15 
Johnson County, IA19103MD000001 -180 416 1,162 849 405 -393 2,439 
Washington County, IA19183MD000001 -64 125 54 -8 6 41 218 
Total MD000001 -244 541 1,216 841 411 -352 2,657 
Table 7. Net Migration          
Area NameGeoIDItem201020112012201320142015Sum11-15 
Johnson County, IA19103MN000001 492 1,231 2,008 1,769 1,445 643 7,096 
Washington County, IA19183MN000001 -56 128 56 -6 9 44 231 
Total MN000001 436 1,359 2,064 1,763 1,454 687 7,327 
Table 8. Group Quarters          
Area NameGeoIDItem201020112012201320142015Chg10-15%Chg 10-15
Johnson County, IA19103GQ000001 7,857 7,916 8,033 7,986 8,014 8,015 158 2.01
Washington County, IA19183GQ000001 310 315 317 308 311 311 1 0.32
Total GQ000001 8,167 8,231 8,350 8,294 8,325 8,326 159 1.95

Source: developed by ProximityOne based on Census Bureau and other data.
  -- http://proximityone.com (888.364.7656)