Population Trends & Components of Change

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

Components of Change: 7/1/2010-6/30/2015

Natural Change	160,600
equals Births	328,611
less Deaths	168,011
Net Migration	242,144
equals net International Migration	57,353
plus net Domestic Migration	184,791

The population of the State of Colorado changed from 5,048,254 on 2010 to 5,456,574 in 2015 -- a change of 408,320 (8.09%). 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), net migration (242,144) exceeded natural change (160,600); net migration has been the primary contributing factor for the 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 Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Chg 10-15	%Chg 10-15
Adams County, CO	08001	P0000001	443,680	452,204	460,728	470,590	481,169	491,337	47,657	10.74
Alamosa County, CO	08003	P0000001	15,926	16,127	16,136	16,266	16,318	16,496	570	3.58
Arapahoe County, CO	08005	P0000001	574,727	586,033	596,383	608,403	619,634	631,096	56,369	9.81
Archuleta County, CO	08007	P0000001	12,056	12,010	12,114	12,184	12,210	12,352	296	2.46
Baca County, CO	08009	P0000001	3,790	3,810	3,763	3,682	3,635	3,615	-175	-4.62
Bent County, CO	08011	P0000001	6,509	6,325	5,812	5,736	5,773	5,830	-679	-10.43
Boulder County, CO	08013	P0000001	295,986	300,671	305,548	310,706	313,864	319,372	23,386	7.90
Broomfield County, CO	08014	P0000001	56,271	57,445	58,949	60,163	61,875	65,065	8,794	15.63
Chaffee County, CO	08015	P0000001	17,803	18,007	18,104	18,315	18,459	18,658	855	4.80
Cheyenne County, CO	08017	P0000001	1,831	1,864	1,879	1,889	1,854	1,829	-2	-0.11
Clear Creek County, CO	08019	P0000001	9,083	9,056	9,070	9,080	9,171	9,303	220	2.42
Conejos County, CO	08021	P0000001	8,292	8,316	8,277	8,254	8,268	8,130	-162	-1.95
Costilla County, CO	08023	P0000001	3,527	3,645	3,601	3,523	3,552	3,584	57	1.62
Crowley County, CO	08025	P0000001	5,853	5,843	5,416	5,322	5,613	5,562	-291	-4.97
Custer County, CO	08027	P0000001	4,275	4,223	4,240	4,262	4,347	4,445	170	3.98
Delta County, CO	08029	P0000001	30,878	30,379	30,444	30,315	29,955	29,979	-899	-2.91
Denver County, CO	08031	P0000001	603,300	619,374	633,976	648,411	663,963	682,545	79,245	13.14
Dolores County, CO	08033	P0000001	2,065	2,031	1,993	2,028	1,975	1,978	-87	-4.21
Douglas County, CO	08035	P0000001	286,964	292,593	298,673	306,368	314,850	322,387	35,423	12.34
Eagle County, CO	08037	P0000001	52,085	51,772	51,991	52,484	53,026	53,605	1,520	2.92
Elbert County, CO	08039	P0000001	23,095	23,267	23,412	23,690	24,170	24,735	1,640	7.10
El Paso County, CO	08041	P0000001	626,916	636,946	645,678	655,150	662,874	674,471	47,555	7.59
Fremont County, CO	08043	P0000001	46,857	47,420	47,111	46,441	46,381	46,692	-165	-0.35
Garfield County, CO	08045	P0000001	56,094	56,005	56,770	57,066	57,443	58,095	2,001	3.57
Gilpin County, CO	08047	P0000001	5,461	5,445	5,455	5,573	5,722	5,828	367	6.72
Grand County, CO	08049	P0000001	14,783	14,544	14,156	14,264	14,477	14,615	-168	-1.14
Gunnison County, CO	08051	P0000001	15,379	15,459	15,475	15,525	15,727	16,067	688	4.47
Hinsdale County, CO	08053	P0000001	844	827	798	808	781	774	-70	-8.29
Huerfano County, CO	08055	P0000001	6,668	6,516	6,583	6,488	6,433	6,492	-176	-2.64
Jackson County, CO	08057	P0000001	1,385	1,383	1,349	1,358	1,395	1,356	-29	-2.09
Jefferson County, CO	08059	P0000001	535,625	539,607	545,817	551,731	559,042	565,524	29,899	5.58
Kiowa County, CO	08061	P0000001	1,396	1,457	1,438	1,419	1,411	1,423	27	1.93
Kit Carson County, CO	08063	P0000001	8,247	8,200	8,104	8,025	7,813	7,758	-489	-5.93
Lake County, CO	08065	P0000001	7,267	7,378	7,283	7,298	7,367	7,485	218	3.00
La Plata County, CO	08067	P0000001	51,371	51,786	52,307	53,277	53,850	54,688	3,317	6.46
Larimer County, CO	08069	P0000001	300,524	305,314	310,970	316,618	324,657	333,577	33,053	11.00
Las Animas County, CO	08071	P0000001	15,394	15,024	14,961	14,399	14,071	14,058	-1,336	-8.68
Lincoln County, CO	08073	P0000001	5,469	5,434	5,441	5,433	5,508	5,557	88	1.61
Logan County, CO	08075	P0000001	22,130	22,107	21,869	21,676	21,954	22,036	-94	-0.42
Mesa County, CO	08077	P0000001	146,489	147,372	147,720	147,676	147,890	148,513	2,024	1.38
Mineral County, CO	08079	P0000001	704	711	710	721	695	726	22	3.13
Moffat County, CO	08081	P0000001	13,812	13,427	13,174	13,116	12,932	12,937	-875	-6.34
Montezuma County, CO	08083	P0000001	25,548	25,453	25,427	25,652	25,799	26,168	620	2.43
Montrose County, CO	08085	P0000001	41,194	40,905	40,705	40,685	40,832	40,946	-248	-0.60
Morgan County, CO	08087	P0000001	28,172	28,514	28,344	28,332	28,246	28,360	188	0.67
Otero County, CO	08089	P0000001	18,883	18,864	18,687	18,535	18,430	18,343	-540	-2.86
Ouray County, CO	08091	P0000001	4,466	4,455	4,550	4,578	4,625	4,691	225	5.04
Park County, CO	08093	P0000001	16,262	16,080	16,019	16,077	16,260	16,510	248	1.53
Phillips County, CO	08095	P0000001	4,463	4,373	4,384	4,359	4,391	4,349	-114	-2.55
Pitkin County, CO	08097	P0000001	17,156	17,127	17,225	17,360	17,599	17,787	631	3.68
Prowers County, CO	08099	P0000001	12,562	12,497	12,397	12,278	12,049	11,954	-608	-4.84
Pueblo County, CO	08101	P0000001	159,520	160,187	160,816	161,240	161,759	163,591	4,071	2.55
Rio Blanco County, CO	08103	P0000001	6,669	6,778	6,790	6,742	6,681	6,571	-98	-1.47
Rio Grande County, CO	08105	P0000001	12,018	11,923	11,895	11,751	11,611	11,543	-475	-3.95
Routt County, CO	08107	P0000001	23,450	23,256	23,240	23,489	23,917	24,130	680	2.90
Saguache County, CO	08109	P0000001	6,136	6,190	6,319	6,229	6,199	6,251	115	1.87
San Juan County, CO	08111	P0000001	708	697	695	699	719	701	-7	-0.99
San Miguel County, CO	08113	P0000001	7,359	7,480	7,584	7,654	7,782	7,879	520	7.07
Sedgwick County, CO	08115	P0000001	2,370	2,373	2,374	2,346	2,334	2,399	29	1.22
Summit County, CO	08117	P0000001	28,065	27,965	28,245	28,783	29,451	30,257	2,192	7.81
Teller County, CO	08119	P0000001	23,450	23,330	23,373	23,234	23,378	23,385	-65	-0.28
Washington County, CO	08121	P0000001	4,801	4,809	4,737	4,778	4,786	4,864	63	1.31
Weld County, CO	08123	P0000001	254,166	258,704	264,117	270,368	276,379	285,174	31,008	12.20
Yuma County, CO	08125	P0000001	10,025	10,163	10,130	10,230	10,257	10,146	121	1.21
Total		P0000001	5,048,254	5,119,480	5,191,731	5,271,132	5,355,588	5,456,574	408,320	8.09
Table 2. Births
Area Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Sum11-15
Adams County, CO	08001	B0000001	7,224	7,289	6,923	7,168	7,135	7,015	35,530
Alamosa County, CO	08003	B0000001	296	233	208	225	238	233	1,137
Arapahoe County, CO	08005	B0000001	8,160	7,716	7,721	7,857	8,022	7,952	39,268
Archuleta County, CO	08007	B0000001	84	137	117	105	108	107	574
Baca County, CO	08009	B0000001	52	38	55	46	36	37	212
Bent County, CO	08011	B0000001	48	42	54	36	35	31	198
Boulder County, CO	08013	B0000001	3,068	2,996	2,963	2,957	2,919	2,933	14,768
Broomfield County, CO	08014	B0000001	680	700	689	679	692	714	3,474
Chaffee County, CO	08015	B0000001	120	148	150	111	148	141	698
Cheyenne County, CO	08017	B0000001	16	21	38	27	28	22	136
Clear Creek County, CO	08019	B0000001	56	67	68	67	69	64	335
Conejos County, CO	08021	B0000001	164	104	123	107	122	126	582
Costilla County, CO	08023	B0000001	28	36	29	28	27	27	147
Crowley County, CO	08025	B0000001	48	32	42	38	36	37	185
Custer County, CO	08027	B0000001	20	21	26	20	23	28	118
Delta County, CO	08029	B0000001	340	341	340	318	285	294	1,578
Denver County, CO	08031	B0000001	9,620	9,589	9,221	9,257	9,493	10,104	47,664
Dolores County, CO	08033	B0000001	20	17	24	17	16	15	89
Douglas County, CO	08035	B0000001	3,684	3,551	3,484	3,426	3,530	3,560	17,551
Eagle County, CO	08037	B0000001	776	655	696	603	669	633	3,256
Elbert County, CO	08039	B0000001	132	180	159	161	174	185	859
El Paso County, CO	08041	B0000001	9,032	9,231	9,167	9,085	9,302	9,437	46,222
Fremont County, CO	08043	B0000001	316	379	389	334	367	361	1,830
Garfield County, CO	08045	B0000001	920	861	791	821	794	792	4,059
Gilpin County, CO	08047	B0000001	40	46	40	48	37	43	214
Grand County, CO	08049	B0000001	112	105	109	117	117	121	569
Gunnison County, CO	08051	B0000001	168	150	165	149	128	139	731
Hinsdale County, CO	08053	B0000001	0	5	6	9	9	6	35
Huerfano County, CO	08055	B0000001	40	45	58	47	40	44	234
Jackson County, CO	08057	B0000001	16	11	9	5	15	10	50
Jefferson County, CO	08059	B0000001	5,908	5,531	5,547	5,625	5,924	6,064	28,691
Kiowa County, CO	08061	B0000001	12	20	8	15	19	20	82
Kit Carson County, CO	08063	B0000001	116	102	91	83	94	93	463
Lake County, CO	08065	B0000001	104	104	71	78	79	82	414
La Plata County, CO	08067	B0000001	660	543	536	497	565	557	2,698
Larimer County, CO	08069	B0000001	3,372	3,318	3,406	3,376	3,451	3,543	17,094
Las Animas County, CO	08071	B0000001	116	149	148	146	121	119	683
Lincoln County, CO	08073	B0000001	48	64	48	72	49	59	292
Logan County, CO	08075	B0000001	228	212	223	252	233	246	1,166
Mesa County, CO	08077	B0000001	1,904	1,908	1,817	1,855	1,781	1,816	9,177
Mineral County, CO	08079	B0000001	4	5	6	4	5	4	24
Moffat County, CO	08081	B0000001	232	186	164	189	182	172	893
Montezuma County, CO	08083	B0000001	336	308	292	291	338	337	1,566
Montrose County, CO	08085	B0000001	496	497	399	455	469	458	2,278
Morgan County, CO	08087	B0000001	504	461	428	415	432	418	2,154
Otero County, CO	08089	B0000001	180	249	267	190	205	205	1,116
Ouray County, CO	08091	B0000001	48	28	32	32	32	31	155
Park County, CO	08093	B0000001	108	114	110	97	102	107	530
Phillips County, CO	08095	B0000001	68	50	54	41	60	59	264
Pitkin County, CO	08097	B0000001	148	172	125	125	121	119	662
Prowers County, CO	08099	B0000001	156	141	185	167	150	158	801
Pueblo County, CO	08101	B0000001	2,016	1,866	1,878	1,855	1,961	1,911	9,471
Rio Blanco County, CO	08103	B0000001	88	104	71	78	76	69	398
Rio Grande County, CO	08105	B0000001	164	142	133	150	139	145	709
Routt County, CO	08107	B0000001	272	227	215	204	204	208	1,058
Saguache County, CO	08109	B0000001	84	78	74	76	62	64	354
San Juan County, CO	08111	B0000001	0	8	3	1	4	4	20
San Miguel County, CO	08113	B0000001	68	75	72	68	68	68	351
Sedgwick County, CO	08115	B0000001	24	28	21	27	22	23	121
Summit County, CO	08117	B0000001	256	307	309	248	263	269	1,396
Teller County, CO	08119	B0000001	196	223	153	166	195	194	931
Washington County, CO	08121	B0000001	48	41	39	34	46	43	203
Weld County, CO	08123	B0000001	3,768	3,754	3,795	3,819	3,958	4,041	19,367
Yuma County, CO	08125	B0000001	152	155	156	140	135	140	726
Total		B0000001	67,164	65,916	64,740	64,739	66,159	67,057	328,611
Table 3. Deaths
Area Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Sum11-15
Adams County, CO	08001	D0000001	2,664	2,468	2,732	2,796	2,837	2,815	13,648
Alamosa County, CO	08003	D0000001	60	131	122	147	107	104	611
Arapahoe County, CO	08005	D0000001	3,556	3,424	3,371	3,571	3,634	3,812	17,812
Archuleta County, CO	08007	D0000001	108	80	74	91	81	89	415
Baca County, CO	08009	D0000001	28	74	71	54	33	52	284
Bent County, CO	08011	D0000001	100	60	57	61	35	41	254
Boulder County, CO	08013	D0000001	1,384	1,505	1,577	1,671	1,726	1,755	8,234
Broomfield County, CO	08014	D0000001	368	320	331	330	332	339	1,652
Chaffee County, CO	08015	D0000001	116	155	158	177	168	148	806
Cheyenne County, CO	08017	D0000001	8	21	27	18	13	12	91
Clear Creek County, CO	08019	D0000001	128	55	42	57	46	55	255
Conejos County, CO	08021	D0000001	20	87	82	102	58	73	402
Costilla County, CO	08023	D0000001	44	33	40	44	27	26	170
Crowley County, CO	08025	D0000001	12	35	47	38	27	29	176
Custer County, CO	08027	D0000001	16	29	36	36	27	33	161
Delta County, CO	08029	D0000001	440	357	316	318	382	357	1,730
Denver County, CO	08031	D0000001	4,012	4,123	4,124	4,164	4,418	4,648	21,477
Dolores County, CO	08033	D0000001	0	17	18	18	15	9	77
Douglas County, CO	08035	D0000001	1,040	903	1,040	1,046	1,102	1,179	5,270
Eagle County, CO	08037	D0000001	36	83	98	118	105	98	502
Elbert County, CO	08039	D0000001	124	109	117	127	127	127	607
El Paso County, CO	08041	D0000001	3,444	3,673	3,773	3,912	4,220	4,208	19,786
Fremont County, CO	08043	D0000001	616	529	498	528	527	532	2,614
Garfield County, CO	08045	D0000001	324	294	256	285	287	318	1,440
Gilpin County, CO	08047	D0000001	0	28	27	21	23	21	120
Grand County, CO	08049	D0000001	16	66	45	61	58	56	286
Gunnison County, CO	08051	D0000001	116	54	77	68	54	60	313
Hinsdale County, CO	08053	D0000001	0	7	3	5	2	1	18
Huerfano County, CO	08055	D0000001	52	107	106	93	87	81	474
Jackson County, CO	08057	D0000001	0	10	15	10	7	6	48
Jefferson County, CO	08059	D0000001	3,660	3,735	3,893	4,001	4,276	4,224	20,129
Kiowa County, CO	08061	D0000001	8	22	21	18	18	15	94
Kit Carson County, CO	08063	D0000001	108	82	69	76	62	80	369
Lake County, CO	08065	D0000001	56	42	41	38	25	24	170
La Plata County, CO	08067	D0000001	340	249	334	315	312	343	1,553
Larimer County, CO	08069	D0000001	1,956	1,867	1,871	1,989	2,036	2,016	9,779
Las Animas County, CO	08071	D0000001	164	196	162	183	139	150	830
Lincoln County, CO	08073	D0000001	60	51	56	42	41	44	234
Logan County, CO	08075	D0000001	116	183	184	199	224	199	989
Mesa County, CO	08077	D0000001	1,324	1,305	1,305	1,383	1,445	1,379	6,817
Mineral County, CO	08079	D0000001	16	3	5	4	3	3	18
Moffat County, CO	08081	D0000001	176	68	120	91	91	79	449
Montezuma County, CO	08083	D0000001	160	290	273	251	252	257	1,323
Montrose County, CO	08085	D0000001	268	399	459	385	391	421	2,055
Morgan County, CO	08087	D0000001	156	279	271	232	234	234	1,250
Otero County, CO	08089	D0000001	124	220	265	225	248	218	1,176
Ouray County, CO	08091	D0000001	60	19	18	34	39	28	138
Park County, CO	08093	D0000001	28	83	77	75	81	93	409
Phillips County, CO	08095	D0000001	32	61	48	49	36	50	244
Pitkin County, CO	08097	D0000001	68	56	48	43	40	37	224
Prowers County, CO	08099	D0000001	36	149	130	119	85	102	585
Pueblo County, CO	08101	D0000001	1,668	1,650	1,581	1,608	1,659	1,694	8,192
Rio Blanco County, CO	08103	D0000001	68	41	55	52	47	40	235
Rio Grande County, CO	08105	D0000001	56	127	128	129	96	123	603
Routt County, CO	08107	D0000001	132	88	92	102	81	104	467
Saguache County, CO	08109	D0000001	4	37	30	33	36	54	190
San Juan County, CO	08111	D0000001	4	8	3	4	1	5	21
San Miguel County, CO	08113	D0000001	28	18	29	25	21	13	106
Sedgwick County, CO	08115	D0000001	56	41	38	29	28	30	166
Summit County, CO	08117	D0000001	12	54	56	54	52	50	266
Teller County, CO	08119	D0000001	104	132	143	125	182	168	750
Washington County, CO	08121	D0000001	20	53	50	41	43	45	232
Weld County, CO	08123	D0000001	1,468	1,442	1,458	1,565	1,626	1,634	7,725
Yuma County, CO	08125	D0000001	56	118	113	92	81	86	490
Total		D0000001	31,424	32,005	32,706	33,578	34,596	35,126	168,011
Table 4. Natural Change
Area Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Sum11-15
Adams County, CO	08001	NC000001	4,560	4,821	4,191	4,372	4,298	4,200	21,882
Alamosa County, CO	08003	NC000001	236	102	86	78	131	129	526
Arapahoe County, CO	08005	NC000001	4,604	4,292	4,350	4,286	4,388	4,140	21,456
Archuleta County, CO	08007	NC000001	-24	57	43	14	27	18	159
Baca County, CO	08009	NC000001	24	-36	-16	-8	3	-15	-72
Bent County, CO	08011	NC000001	-52	-18	-3	-25	0	-10	-56
Boulder County, CO	08013	NC000001	1,684	1,491	1,386	1,286	1,193	1,178	6,534
Broomfield County, CO	08014	NC000001	312	380	358	349	360	375	1,822
Chaffee County, CO	08015	NC000001	4	-7	-8	-66	-20	-7	-108
Cheyenne County, CO	08017	NC000001	8	0	11	9	15	10	45
Clear Creek County, CO	08019	NC000001	-72	12	26	10	23	9	80
Conejos County, CO	08021	NC000001	144	17	41	5	64	53	180
Costilla County, CO	08023	NC000001	-16	3	-11	-16	0	1	-23
Crowley County, CO	08025	NC000001	36	-3	-5	0	9	8	9
Custer County, CO	08027	NC000001	4	-8	-10	-16	-4	-5	-43
Delta County, CO	08029	NC000001	-100	-16	24	0	-97	-63	-152
Denver County, CO	08031	NC000001	5,608	5,466	5,097	5,093	5,075	5,456	26,187
Dolores County, CO	08033	NC000001	20	0	6	-1	1	6	12
Douglas County, CO	08035	NC000001	2,644	2,648	2,444	2,380	2,428	2,381	12,281
Eagle County, CO	08037	NC000001	740	572	598	485	564	535	2,754
Elbert County, CO	08039	NC000001	8	71	42	34	47	58	252
El Paso County, CO	08041	NC000001	5,588	5,558	5,394	5,173	5,082	5,229	26,436
Fremont County, CO	08043	NC000001	-300	-150	-109	-194	-160	-171	-784
Garfield County, CO	08045	NC000001	596	567	535	536	507	474	2,619
Gilpin County, CO	08047	NC000001	40	18	13	27	14	22	94
Grand County, CO	08049	NC000001	96	39	64	56	59	65	283
Gunnison County, CO	08051	NC000001	52	96	88	81	74	79	418
Hinsdale County, CO	08053	NC000001	0	-2	3	4	7	5	17
Huerfano County, CO	08055	NC000001	-12	-62	-48	-46	-47	-37	-240
Jackson County, CO	08057	NC000001	16	1	-6	-5	8	4	2
Jefferson County, CO	08059	NC000001	2,248	1,796	1,654	1,624	1,648	1,840	8,562
Kiowa County, CO	08061	NC000001	4	-2	-13	-3	1	5	-12
Kit Carson County, CO	08063	NC000001	8	20	22	7	32	13	94
Lake County, CO	08065	NC000001	48	62	30	40	54	58	244
La Plata County, CO	08067	NC000001	320	294	202	182	253	214	1,145
Larimer County, CO	08069	NC000001	1,416	1,451	1,535	1,387	1,415	1,527	7,315
Las Animas County, CO	08071	NC000001	-48	-47	-14	-37	-18	-31	-147
Lincoln County, CO	08073	NC000001	-12	13	-8	30	8	15	58
Logan County, CO	08075	NC000001	112	29	39	53	9	47	177
Mesa County, CO	08077	NC000001	580	603	512	472	336	437	2,360
Mineral County, CO	08079	NC000001	-12	2	1	0	2	1	6
Moffat County, CO	08081	NC000001	56	118	44	98	91	93	444
Montezuma County, CO	08083	NC000001	176	18	19	40	86	80	243
Montrose County, CO	08085	NC000001	228	98	-60	70	78	37	223
Morgan County, CO	08087	NC000001	348	182	157	183	198	184	904
Otero County, CO	08089	NC000001	56	29	2	-35	-43	-13	-60
Ouray County, CO	08091	NC000001	-12	9	14	-2	-7	3	17
Park County, CO	08093	NC000001	80	31	33	22	21	14	121
Phillips County, CO	08095	NC000001	36	-11	6	-8	24	9	20
Pitkin County, CO	08097	NC000001	80	116	77	82	81	82	438
Prowers County, CO	08099	NC000001	120	-8	55	48	65	56	216
Pueblo County, CO	08101	NC000001	348	216	297	247	302	217	1,279
Rio Blanco County, CO	08103	NC000001	20	63	16	26	29	29	163
Rio Grande County, CO	08105	NC000001	108	15	5	21	43	22	106
Routt County, CO	08107	NC000001	140	139	123	102	123	104	591
Saguache County, CO	08109	NC000001	80	41	44	43	26	10	164
San Juan County, CO	08111	NC000001	-4	0	0	-3	3	-1	-1
San Miguel County, CO	08113	NC000001	40	57	43	43	47	55	245
Sedgwick County, CO	08115	NC000001	-32	-13	-17	-2	-6	-7	-45
Summit County, CO	08117	NC000001	244	253	253	194	211	219	1,130
Teller County, CO	08119	NC000001	92	91	10	41	13	26	181
Washington County, CO	08121	NC000001	28	-12	-11	-7	3	-2	-29
Weld County, CO	08123	NC000001	2,300	2,312	2,337	2,254	2,332	2,407	11,642
Yuma County, CO	08125	NC000001	96	37	43	48	54	54	236
Total		NC000001	35,740	33,911	32,034	31,161	31,563	31,931	160,600
Table 5. International Migration
Area Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Sum11-15
Adams County, CO	08001	MI000001	304	727	751	847	1,012	1,044	4,381
Alamosa County, CO	08003	MI000001	16	10	13	16	17	17	73
Arapahoe County, CO	08005	MI000001	1,572	2,029	2,265	2,440	2,780	2,817	12,331
Archuleta County, CO	08007	MI000001	4	4	3	4	5	5	21
Baca County, CO	08009	MI000001	0	1	1	1	3	3	9
Bent County, CO	08011	MI000001	12	8	8	11	12	12	51
Boulder County, CO	08013	MI000001	776	810	860	950	1,101	1,110	4,831
Broomfield County, CO	08014	MI000001	80	109	99	109	123	122	562
Chaffee County, CO	08015	MI000001	12	20	10	10	13	13	66
Cheyenne County, CO	08017	MI000001	0	7	6	7	9	9	38
Clear Creek County, CO	08019	MI000001	12	15	14	14	17	17	77
Conejos County, CO	08021	MI000001	4	3	4	5	5	5	22
Costilla County, CO	08023	MI000001	4	8	9	9	12	12	50
Crowley County, CO	08025	MI000001	4	12	12	13	14	15	66
Custer County, CO	08027	MI000001	0	0	0	0	0	0	0
Delta County, CO	08029	MI000001	12	20	15	16	17	17	85
Denver County, CO	08031	MI000001	1,056	1,788	1,920	2,166	2,516	2,561	10,951
Dolores County, CO	08033	MI000001	0	0	0	1	1	1	3
Douglas County, CO	08035	MI000001	296	362	425	464	534	543	2,328
Eagle County, CO	08037	MI000001	108	122	104	122	151	152	651
Elbert County, CO	08039	MI000001	16	11	9	14	17	17	68
El Paso County, CO	08041	MI000001	1,700	864	2,761	1,822	1,723	2,168	9,338
Fremont County, CO	08043	MI000001	48	70	47	54	62	62	295
Garfield County, CO	08045	MI000001	80	63	62	78	98	105	406
Gilpin County, CO	08047	MI000001	0	1	2	2	2	2	9
Grand County, CO	08049	MI000001	16	6	4	5	6	7	28
Gunnison County, CO	08051	MI000001	8	6	4	6	7	7	30
Hinsdale County, CO	08053	MI000001	0	0	0	0	0	0	0
Huerfano County, CO	08055	MI000001	12	11	9	11	11	11	53
Jackson County, CO	08057	MI000001	0	0	0	0	0	0	0
Jefferson County, CO	08059	MI000001	412	530	580	639	739	742	3,230
Kiowa County, CO	08061	MI000001	0	0	0	0	0	0	0
Kit Carson County, CO	08063	MI000001	-8	5	6	6	8	8	33
Lake County, CO	08065	MI000001	-4	-1	-1	-1	0	1	-2
La Plata County, CO	08067	MI000001	24	21	20	23	31	33	128
Larimer County, CO	08069	MI000001	252	378	432	466	552	556	2,384
Las Animas County, CO	08071	MI000001	4	8	4	5	6	6	29
Lincoln County, CO	08073	MI000001	0	4	5	5	6	6	26
Logan County, CO	08075	MI000001	-8	-14	-4	3	9	10	4
Mesa County, CO	08077	MI000001	64	50	57	67	87	88	349
Mineral County, CO	08079	MI000001	0	0	0	0	0	0	0
Moffat County, CO	08081	MI000001	8	10	14	15	18	18	75
Montezuma County, CO	08083	MI000001	16	14	15	17	20	20	86
Montrose County, CO	08085	MI000001	28	38	33	39	51	52	213
Morgan County, CO	08087	MI000001	76	91	74	81	91	93	430
Otero County, CO	08089	MI000001	8	5	8	11	11	11	46
Ouray County, CO	08091	MI000001	4	2	1	1	2	2	8
Park County, CO	08093	MI000001	8	-2	-4	-4	-4	-4	-18
Phillips County, CO	08095	MI000001	4	12	13	13	17	17	72
Pitkin County, CO	08097	MI000001	56	54	52	55	64	65	290
Prowers County, CO	08099	MI000001	8	10	5	11	18	19	63
Pueblo County, CO	08101	MI000001	60	44	76	71	78	83	352
Rio Blanco County, CO	08103	MI000001	52	14	15	16	18	18	81
Rio Grande County, CO	08105	MI000001	4	4	6	8	8	8	34
Routt County, CO	08107	MI000001	20	15	6	10	13	14	58
Saguache County, CO	08109	MI000001	8	10	8	10	12	12	52
San Juan County, CO	08111	MI000001	0	0	0	0	0	0	0
San Miguel County, CO	08113	MI000001	32	24	20	21	23	26	114
Sedgwick County, CO	08115	MI000001	0	1	2	2	2	2	9
Summit County, CO	08117	MI000001	140	148	147	161	178	179	813
Teller County, CO	08119	MI000001	4	-2	-4	-3	-2	-2	-13
Washington County, CO	08121	MI000001	0	3	1	1	1	1	7
Weld County, CO	08123	MI000001	176	247	245	278	346	361	1,477
Yuma County, CO	08125	MI000001	16	16	18	20	23	23	100
Total		MI000001	7,616	8,826	11,267	11,244	12,694	13,322	57,353
Table 6. Domestic Migration
Area Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Sum11-15
Adams County, CO	08001	MD000001	2,880	2,680	3,510	4,421	5,163	4,864	20,638
Alamosa County, CO	08003	MD000001	1,528	88	-89	42	-87	28	-18
Arapahoe County, CO	08005	MD000001	4,044	4,502	3,699	5,167	4,125	4,458	21,951
Archuleta County, CO	08007	MD000001	-92	-116	60	74	7	134	159
Baca County, CO	08009	MD000001	4	33	-30	-63	-53	-2	-115
Bent County, CO	08011	MD000001	88	-178	-535	-55	25	64	-679
Boulder County, CO	08013	MD000001	3,020	2,343	2,623	2,932	893	3,053	11,844
Broomfield County, CO	08014	MD000001	1,248	633	1,053	820	1,134	2,719	6,359
Chaffee County, CO	08015	MD000001	-36	196	94	253	164	237	944
Cheyenne County, CO	08017	MD000001	-28	24	0	0	-60	-32	-68
Clear Creek County, CO	08019	MD000001	84	-71	-25	-18	56	122	64
Conejos County, CO	08021	MD000001	12	-19	-85	-37	-59	-198	-398
Costilla County, CO	08023	MD000001	28	100	-44	-54	19	15	36
Crowley County, CO	08025	MD000001	80	-21	-450	-111	251	-74	-405
Custer County, CO	08027	MD000001	84	-41	26	61	92	107	245
Delta County, CO	08029	MD000001	-208	-506	28	-138	-271	33	-854
Denver County, CO	08031	MD000001	6,408	8,665	7,245	7,041	7,820	10,526	41,297
Dolores County, CO	08033	MD000001	-12	-39	-45	33	-60	2	-109
Douglas County, CO	08035	MD000001	3,028	2,351	3,227	5,062	5,109	4,600	20,349
Eagle County, CO	08037	MD000001	-1,344	-1,071	-473	-64	-187	-49	-1,844
Elbert County, CO	08039	MD000001	32	34	99	231	409	473	1,246
El Paso County, CO	08041	MD000001	10,692	3,691	625	2,169	994	3,659	11,138
Fremont County, CO	08043	MD000001	384	611	-253	-538	42	368	230
Garfield County, CO	08045	MD000001	-1,964	-716	171	-343	-211	74	-1,025
Gilpin County, CO	08047	MD000001	40	-35	-5	89	124	101	274
Grand County, CO	08049	MD000001	-352	-288	-454	56	124	105	-457
Gunnison County, CO	08051	MD000001	144	-18	-73	-43	107	280	253
Hinsdale County, CO	08053	MD000001	0	-17	-32	5	-35	-7	-86
Huerfano County, CO	08055	MD000001	-160	-104	104	-58	-12	85	15
Jackson County, CO	08057	MD000001	-48	-15	-29	20	26	-36	-34
Jefferson County, CO	08059	MD000001	924	1,768	3,903	3,318	4,956	3,842	17,787
Kiowa County, CO	08061	MD000001	-8	45	-7	-16	-12	9	19
Kit Carson County, CO	08063	MD000001	-68	-99	-125	-71	-258	-79	-632
Lake County, CO	08065	MD000001	-228	42	-125	-19	4	77	-21
La Plata County, CO	08067	MD000001	-204	111	296	730	320	580	2,037
Larimer County, CO	08069	MD000001	1,948	2,752	3,635	3,717	5,763	6,502	22,369
Las Animas County, CO	08071	MD000001	-396	-329	-53	-552	-309	21	-1,222
Lincoln County, CO	08073	MD000001	16	-55	10	-45	63	39	12
Logan County, CO	08075	MD000001	-2,596	-42	-273	-265	266	28	-286
Mesa County, CO	08077	MD000001	-1,628	278	-205	-636	-277	26	-814
Mineral County, CO	08079	MD000001	-20	0	-3	20	-30	33	20
Moffat County, CO	08081	MD000001	4	-531	-316	-162	-309	-84	-1,402
Montezuma County, CO	08083	MD000001	-112	-115	-58	168	63	235	293
Montrose County, CO	08085	MD000001	-612	-418	-164	-102	-10	0	-694
Morgan County, CO	08087	MD000001	-324	-34	-407	-273	-368	-173	-1,255
Otero County, CO	08089	MD000001	144	-46	-189	-122	-60	-99	-516
Ouray County, CO	08091	MD000001	136	-34	78	28	56	72	200
Park County, CO	08093	MD000001	160	-209	-81	97	155	326	288
Phillips County, CO	08095	MD000001	52	-93	-8	-28	-14	-69	-212
Pitkin County, CO	08097	MD000001	-104	-207	-28	26	95	85	-29
Prowers County, CO	08099	MD000001	-72	-74	-162	-167	-314	-168	-885
Pueblo County, CO	08101	MD000001	1,360	498	250	50	176	1,357	2,331
Rio Blanco County, CO	08103	MD000001	-72	34	-17	-92	-113	-134	-322
Rio Grande County, CO	08105	MD000001	40	-115	-40	-185	-184	-110	-634
Routt County, CO	08107	MD000001	-400	-360	-148	123	288	136	39
Saguache County, CO	08109	MD000001	28	2	78	-142	-70	34	-98
San Juan County, CO	08111	MD000001	36	-14	-2	12	15	-16	-5
San Miguel County, CO	08113	MD000001	-76	37	42	3	59	17	158
Sedgwick County, CO	08115	MD000001	-4	11	18	-23	-7	68	67
Summit County, CO	08117	MD000001	-80	-531	-111	200	283	465	306
Teller County, CO	08119	MD000001	300	-231	46	-124	118	54	-137
Washington County, CO	08121	MD000001	-60	-17	-61	52	7	74	55
Weld County, CO	08123	MD000001	2,680	1,844	2,805	3,592	3,239	5,786	17,266
Yuma County, CO	08125	MD000001	-164	39	-95	51	-53	-184	-242
Total		MD000001	30,184	26,603	28,425	36,117	39,187	54,459	184,791
Table 7. Net Migration
Area Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Sum11-15
Adams County, CO	08001	MN000001	3,184	3,407	4,261	5,268	6,175	5,908	25,019
Alamosa County, CO	08003	MN000001	1,544	98	-76	58	-70	45	55
Arapahoe County, CO	08005	MN000001	5,616	6,531	5,964	7,607	6,905	7,275	34,282
Archuleta County, CO	08007	MN000001	-88	-112	63	78	12	139	180
Baca County, CO	08009	MN000001	4	34	-29	-62	-50	1	-106
Bent County, CO	08011	MN000001	100	-170	-527	-44	37	76	-628
Boulder County, CO	08013	MN000001	3,796	3,153	3,483	3,882	1,994	4,163	16,675
Broomfield County, CO	08014	MN000001	1,328	742	1,152	929	1,257	2,841	6,921
Chaffee County, CO	08015	MN000001	-24	216	104	263	177	250	1,010
Cheyenne County, CO	08017	MN000001	-28	31	6	7	-51	-23	-30
Clear Creek County, CO	08019	MN000001	96	-56	-11	-4	73	139	141
Conejos County, CO	08021	MN000001	16	-16	-81	-32	-54	-193	-376
Costilla County, CO	08023	MN000001	32	108	-35	-45	31	27	86
Crowley County, CO	08025	MN000001	84	-9	-438	-98	265	-59	-339
Custer County, CO	08027	MN000001	84	-41	26	61	92	107	245
Delta County, CO	08029	MN000001	-196	-486	43	-122	-254	50	-769
Denver County, CO	08031	MN000001	7,464	10,453	9,165	9,207	10,336	13,087	52,248
Dolores County, CO	08033	MN000001	-12	-39	-45	34	-59	3	-106
Douglas County, CO	08035	MN000001	3,324	2,713	3,652	5,526	5,643	5,143	22,677
Eagle County, CO	08037	MN000001	-1,236	-949	-369	58	-36	103	-1,193
Elbert County, CO	08039	MN000001	48	45	108	245	426	490	1,314
El Paso County, CO	08041	MN000001	12,392	4,555	3,386	3,991	2,717	5,827	20,476
Fremont County, CO	08043	MN000001	432	681	-206	-484	104	430	525
Garfield County, CO	08045	MN000001	-1,884	-653	233	-265	-113	179	-619
Gilpin County, CO	08047	MN000001	40	-34	-3	91	126	103	283
Grand County, CO	08049	MN000001	-336	-282	-450	61	130	112	-429
Gunnison County, CO	08051	MN000001	152	-12	-69	-37	114	287	283
Hinsdale County, CO	08053	MN000001	0	-17	-32	5	-35	-7	-86
Huerfano County, CO	08055	MN000001	-148	-93	113	-47	-1	96	68
Jackson County, CO	08057	MN000001	-48	-15	-29	20	26	-36	-34
Jefferson County, CO	08059	MN000001	1,336	2,298	4,483	3,957	5,695	4,584	21,017
Kiowa County, CO	08061	MN000001	-8	45	-7	-16	-12	9	19
Kit Carson County, CO	08063	MN000001	-76	-94	-119	-65	-250	-71	-599
Lake County, CO	08065	MN000001	-232	41	-126	-20	4	78	-23
La Plata County, CO	08067	MN000001	-180	132	316	753	351	613	2,165
Larimer County, CO	08069	MN000001	2,200	3,130	4,067	4,183	6,315	7,058	24,753
Las Animas County, CO	08071	MN000001	-392	-321	-49	-547	-303	27	-1,193
Lincoln County, CO	08073	MN000001	16	-51	15	-40	69	45	38
Logan County, CO	08075	MN000001	-2,604	-56	-277	-262	275	38	-282
Mesa County, CO	08077	MN000001	-1,564	328	-148	-569	-190	114	-465
Mineral County, CO	08079	MN000001	-20	0	-3	20	-30	33	20
Moffat County, CO	08081	MN000001	12	-521	-302	-147	-291	-66	-1,327
Montezuma County, CO	08083	MN000001	-96	-101	-43	185	83	255	379
Montrose County, CO	08085	MN000001	-584	-380	-131	-63	41	52	-481
Morgan County, CO	08087	MN000001	-248	57	-333	-192	-277	-80	-825
Otero County, CO	08089	MN000001	152	-41	-181	-111	-49	-88	-470
Ouray County, CO	08091	MN000001	140	-32	79	29	58	74	208
Park County, CO	08093	MN000001	168	-211	-85	93	151	322	270
Phillips County, CO	08095	MN000001	56	-81	5	-15	3	-52	-140
Pitkin County, CO	08097	MN000001	-48	-153	24	81	159	150	261
Prowers County, CO	08099	MN000001	-64	-64	-157	-156	-296	-149	-822
Pueblo County, CO	08101	MN000001	1,420	542	326	121	254	1,440	2,683
Rio Blanco County, CO	08103	MN000001	-20	48	-2	-76	-95	-116	-241
Rio Grande County, CO	08105	MN000001	44	-111	-34	-177	-176	-102	-600
Routt County, CO	08107	MN000001	-380	-345	-142	133	301	150	97
Saguache County, CO	08109	MN000001	36	12	86	-132	-58	46	-46
San Juan County, CO	08111	MN000001	36	-14	-2	12	15	-16	-5
San Miguel County, CO	08113	MN000001	-44	61	62	24	82	43	272
Sedgwick County, CO	08115	MN000001	-4	12	20	-21	-5	70	76
Summit County, CO	08117	MN000001	60	-383	36	361	461	644	1,119
Teller County, CO	08119	MN000001	304	-233	42	-127	116	52	-150
Washington County, CO	08121	MN000001	-60	-14	-60	53	8	75	62
Weld County, CO	08123	MN000001	2,856	2,091	3,050	3,870	3,585	6,147	18,743
Yuma County, CO	08125	MN000001	-148	55	-77	71	-30	-161	-142
Total		MN000001	37,800	35,429	39,692	47,361	51,881	67,781	242,144
Table 8. Group Quarters
Area Name	GeoID	Item	2010	2011	2012	2013	2014	2015	Chg10-15	%Chg 10-15
Adams County, CO	08001	GQ000001	4,031	4,025	4,035	4,037	4,092	4,094	63	1.56
Alamosa County, CO	08003	GQ000001	1,156	1,156	1,156	1,156	1,276	1,273	117	10.12
Arapahoe County, CO	08005	GQ000001	5,025	4,955	4,891	4,747	4,688	4,671	-354	-7.04
Archuleta County, CO	08007	GQ000001	129	129	129	129	129	129	0	0.00
Baca County, CO	08009	GQ000001	82	82	82	82	82	82	0	0.00
Bent County, CO	08011	GQ000001	2,210	2,127	1,694	1,724	1,870	1,871	-339	-15.34
Boulder County, CO	08013	GQ000001	9,897	10,520	10,405	10,733	10,903	10,887	990	10.00
Broomfield County, CO	08014	GQ000001	282	282	282	282	282	282	0	0.00
Chaffee County, CO	08015	GQ000001	1,436	1,481	1,467	1,360	1,473	1,472	36	2.51
Cheyenne County, CO	08017	GQ000001	42	42	42	42	42	42	0	0.00
Clear Creek County, CO	08019	GQ000001	84	84	84	84	84	84	0	0.00
Conejos County, CO	08021	GQ000001	36	36	36	36	36	36	0	0.00
Costilla County, CO	08023	GQ000001	0	0	0	0	0	0	0	..
Crowley County, CO	08025	GQ000001	2,689	2,658	2,308	2,261	2,536	2,534	-155	-5.76
Custer County, CO	08027	GQ000001	150	150	150	150	151	150	0	0.00
Delta County, CO	08029	GQ000001	713	697	713	556	697	697	-16	-2.24
Denver County, CO	08031	GQ000001	15,986	16,178	16,222	16,109	16,202	16,189	203	1.27
Dolores County, CO	08033	GQ000001	0	0	0	0	0	0	0	..
Douglas County, CO	08035	GQ000001	651	640	606	614	614	612	-39	-5.99
Eagle County, CO	08037	GQ000001	63	80	78	78	75	75	12	19.05
Elbert County, CO	08039	GQ000001	73	73	73	73	73	73	0	0.00
El Paso County, CO	08041	GQ000001	19,002	18,851	18,495	18,326	17,884	17,887	-1,115	-5.87
Fremont County, CO	08043	GQ000001	8,728	9,055	8,698	8,387	8,245	8,243	-485	-5.56
Garfield County, CO	08045	GQ000001	884	882	884	857	884	884	0	0.00
Gilpin County, CO	08047	GQ000001	49	49	49	49	49	49	0	0.00
Grand County, CO	08049	GQ000001	222	222	222	222	223	223	1	0.45
Gunnison County, CO	08051	GQ000001	936	930	930	933	933	931	-5	-0.53
Hinsdale County, CO	08053	GQ000001	56	56	56	56	56	56	0	0.00
Huerfano County, CO	08055	GQ000001	165	165	165	165	165	165	0	0.00
Jackson County, CO	08057	GQ000001	2	2	2	2	2	2	0	0.00
Jefferson County, CO	08059	GQ000001	7,451	7,705	7,634	7,714	7,744	7,738	287	3.85
Kiowa County, CO	08061	GQ000001	14	14	14	14	14	14	0	0.00
Kit Carson County, CO	08063	GQ000001	1,075	887	822	822	543	546	-529	-49.21
Lake County, CO	08065	GQ000001	133	139	139	139	146	146	13	9.77
La Plata County, CO	08067	GQ000001	1,648	1,649	1,742	1,949	1,826	1,824	176	10.68
Larimer County, CO	08069	GQ000001	8,557	8,404	8,466	8,632	8,941	8,933	376	4.39
Las Animas County, CO	08071	GQ000001	854	854	793	797	862	862	8	0.94
Lincoln County, CO	08073	GQ000001	1,030	1,004	1,030	1,030	1,029	1,029	-1	-0.10
Logan County, CO	08075	GQ000001	3,312	3,383	3,222	3,163	3,332	3,334	22	0.66
Mesa County, CO	08077	GQ000001	3,823	4,128	4,282	4,489	4,220	4,209	386	10.10
Mineral County, CO	08079	GQ000001	0	0	0	0	0	0	0	..
Moffat County, CO	08081	GQ000001	102	102	102	102	102	102	0	0.00
Montezuma County, CO	08083	GQ000001	237	237	237	237	237	237	0	0.00
Montrose County, CO	08085	GQ000001	542	542	542	542	542	542	0	0.00
Morgan County, CO	08087	GQ000001	564	564	564	564	564	564	0	0.00
Otero County, CO	08089	GQ000001	461	459	459	459	458	457	-4	-0.87
Ouray County, CO	08091	GQ000001	0	0	0	0	0	0	0	..
Park County, CO	08093	GQ000001	92	92	92	92	92	92	0	0.00
Phillips County, CO	08095	GQ000001	60	60	60	60	60	59	-1	-1.67
Pitkin County, CO	08097	GQ000001	72	72	72	72	72	72	0	0.00
Prowers County, CO	08099	GQ000001	343	344	343	342	342	342	-1	-0.29
Pueblo County, CO	08101	GQ000001	4,404	4,404	4,585	4,562	4,480	4,482	78	1.77
Rio Blanco County, CO	08103	GQ000001	286	235	299	304	304	302	16	5.59
Rio Grande County, CO	08105	GQ000001	198	198	198	198	198	198	0	0.00
Routt County, CO	08107	GQ000001	349	352	324	351	362	362	13	3.72
Saguache County, CO	08109	GQ000001	18	18	18	18	18	18	0	0.00
San Juan County, CO	08111	GQ000001	0	0	0	0	0	0	0	..
San Miguel County, CO	08113	GQ000001	9	9	9	9	9	9	0	0.00
Sedgwick County, CO	08115	GQ000001	35	35	35	35	35	35	0	0.00
Summit County, CO	08117	GQ000001	273	273	273	273	274	273	0	0.00
Teller County, CO	08119	GQ000001	132	132	132	132	132	132	0	0.00
Washington County, CO	08121	GQ000001	184	184	184	184	185	185	1	0.54
Weld County, CO	08123	GQ000001	5,855	5,839	5,780	5,776	4,706	4,692	-1,163	-19.86
Yuma County, CO	08125	GQ000001	196	196	196	266	261	263	67	34.18
Total		GQ000001	117,088	118,121	116,602	116,577	115,836	115,746	-1,342	-1.15

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