List of Colorado counties by population

This list ranks the 64 counties of the U.S. State of Colorado by population as of July 1, 2023, as estimated by the United States Census Bureau. This list also details the county population changes since the 2000 United States Census.

The location of the State of Colorado in the United States of America.

Adams Alam Arapahoe Arch Baca Bent Boul Bro Chaf Cheyenne Cle Conejos Cost Crow Cust Delta Den Dolores Doug Eagle Elbert El Paso Fremont Garfield Gil Grand Gunnison Hins Huerfano Jacks Jef Kiowa Kit Carson Lake La Plata Larimer Las Animas Lincoln Logan Mesa Min Moffat Montez Montrose Morg Otero Our Park Phil Pitkin Prow Pueblo Rio Blanco Rio G Routt Saguache SJ San Miguel Sedg Sum Tell Wash Weld Yuma

The 64 counties of the U.S. State of Colorado.

El Paso County with a 2023 population estimate of 744,215 remains the most populous county in Colorado, while Hinsdale County with a 2023 population of 765 is now the least populous county. Five of the 64 Colorado counties have more than 500,000 residents, while 12 have fewer than 5,000 residents.

Counties

Main article: List of counties in Colorado

Select the OpenStreetMap link at the right to view the location of the 64 counties.

The 64 Counties of the State of Colorado

County	Population								County website	CDOT county map	Coordinates
	2023 rank	2023 estimates	Change	2020 Census	Change	2010 Census	Change	2000 Census
El Paso County	1	744,215	+1.89%	730,395	+17.38%	622,263	+20.38%	516,934	El Paso County	map	38°49′55″N 104°31′31″W
City and County of Denver	2	716,577	+0.15%	715,522	+19.22%	600,158	+8.37%	553,805	City and County of Denver	map	39°45′43″N 104°52′34″W
Arapahoe County	3	656,061	+0.15%	655,070	+14.52%	572,003	+17.01%	488,829	Arapahoe County	map	39°39′01″N 104°20′22″W
Jefferson County	4	576,366	−1.12%	582,910	+9.05%	534,543	+1.73%	525,449	Jefferson County	map	39°35′09″N 105°15′02″W
Adams County	5	533,365	+2.65%	519,572	+17.66%	441,603	+26.87%	348,076	Adams County	map	39°52′27″N 104°20′16″W
Douglas County	6	383,906	+7.24%	357,978	+25.40%	285,465	+62.44%	175,732	Douglas County	map	39°19′47″N 104°55′47″W
Larimer County	7	370,771	+3.26%	359,066	+19.84%	299,630	+19.14%	251,494	Larimer County	map	40°39′58″N 105°27′39″W
Weld County	8	359,442	+9.26%	328,981	+30.12%	252,825	+39.86%	180,766	Weld County	map	40°33′15″N 104°23′38″W
Boulder County	9	326,831	−1.19%	330,758	+12.29%	294,567	+9.19%	269,784	Boulder County	map	40°05′33″N 105°21′28″W
Pueblo County	10	169,422	+0.75%	168,162	+5.72%	159,063	+12.42%	141,490	Pueblo County	map	38°10′24″N 104°30′46″W
Mesa County	11	159,681	+2.55%	155,703	+6.12%	146,723	+25.47%	116,939	Mesa County	map	39°01′05″N 108°28′04″W
City and County of Broomfield	12	76,860	+3.71%	74,112	+32.61%	55,889	+42.57%	39,202	City and County of Broomfield	map	39°57′15″N 105°03′10″W
Garfield County	13	62,707	+1.66%	61,685	+9.39%	56,389	+28.78%	43,786	Garfield County	map	39°36′01″N 107°54′19″W
La Plata County	14	56,407	+1.38%	55,638	+8.38%	51,334	+16.78%	43,957	La Plata County	map	37°17′11″N 107°50′37″W
Eagle County	15	54,381	−2.42%	55,731	+6.77%	52,197	+25.40%	41,623	Eagle County	map	39°37′40″N 106°41′43″W
Fremont County	16	50,318	+2.82%	48,939	+4.52%	46,824	+1.48%	46,140	Fremont County	map	38°28′24″N 105°26′22″W
Montrose County	17	44,156	+3.46%	42,679	+3.40%	41,276	+23.44%	33,438	Montrose County	map	38°24′10″N 108°16′13″W
Delta County	18	31,746	+1.76%	31,196	+0.79%	30,952	+11.24%	27,824	Delta County	map	38°51′41″N 107°51′48″W
Summit County	19	30,465	−1.90%	31,055	+10.93%	27,994	+18.82%	23,560	Summit County	map	39°38′02″N 106°06′58″W
Morgan County	20	29,524	+1.42%	29,111	+3.38%	28,159	+3.63%	27,172	Morgan County	map	40°15′45″N 103°48′35″W
Elbert County	21	28,806	+10.53%	26,062	+12.89%	23,086	+16.27%	19,855	Elbert County	map	39°17′11″N 104°08′08″W
Montezuma County	22	26,531	+2.64%	25,849	+1.23%	25,535	+7.19%	23,822	Montezuma County	map	37°20′18″N 108°35′49″W
Routt County	23	25,064	+0.95%	24,829	+5.61%	23,509	+19.46%	19,679	Routt County	map	40°29′03″N 106°59′27″W
Teller County	24	24,617	−0.38%	24,710	+5.82%	23,350	+13.68%	20,541	Teller County	map	38°52′56″N 105°09′42″W
Logan County	25	20,619	−4.22%	21,528	−5.20%	22,709	+10.42%	20,566	Logan County	map	40°43′29″N 103°06′36″W
Chaffee County	26	20,617	+5.86%	19,476	+9.36%	17,809	+9.59%	16,250	Chaffee County	map	38°44′48″N 106°11′38″W
Otero County	27	18,136	−2.96%	18,690	−0.75%	18,831	−7.29%	20,311	Otero County	map	37°54′09″N 103°43′00″W
Park County	28	18,117	+4.18%	17,390	+7.31%	16,206	+11.62%	14,519	Park County	map	39°07′08″N 105°43′02″W
Gunnison County	29	17,321	+2.38%	16,918	+10.40%	15,324	+9.46%	14,000	Gunnison County	map	38°39′59″N 107°01′55″W
Alamosa County	30	16,655	+1.70%	16,376	+6.03%	15,445	+3.21%	14,965	Alamosa County	map	37°34′22″N 105°47′18″W
Pitkin County	31	16,640	−4.14%	17,358	+1.22%	17,148	+15.17%	14,889	Pitkin County	map	39°13′02″N 106°54′59″W
Grand County	32	15,935	+1.39%	15,717	+5.89%	14,843	+19.38%	12,433	Grand County	map	40°06′09″N 106°07′05″W
Las Animas County	33	14,348	−1.42%	14,555	−6.14%	15,507	+1.94%	15,212	Las Animas County	map	37°19′00″N 104°02′21″W
Archuleta County	34	14,189	+6.21%	13,359	+10.55%	12,084	+22.13%	9,894	Archuleta County	map	37°11′37″N 107°02′53″W
Moffat County	35	13,327	+0.26%	13,292	−3.65%	13,795	+4.68%	13,178	Moffat County	map	40°37′07″N 108°12′27″W
Prowers County	36	11,751	−2.07%	11,999	−4.40%	12,551	−13.34%	14,483	Prowers County	map	37°57′18″N 102°23′36″W
Rio Grande County	37	11,188	−3.04%	11,539	−3.70%	11,982	−3.57%	12,425	Rio Grande County	map	37°34′57″N 106°22′59″W
Yuma County	38	9,862	−1.26%	9,988	−0.55%	10,043	+2.00%	9,846	Yuma County	map	40°00′08″N 102°25′27″W
Clear Creek County	39	9,147	−2.66%	9,397	+3.40%	9,088	−1.89%	9,263	Clear Creek County	map	39°41′21″N 105°38′40″W
San Miguel County	40	7,868	−2.53%	8,072	+9.69%	7,359	+11.62%	6,593	San Miguel County	map	38°00′15″N 108°24′21″W
Conejos County	41	7,521	+0.80%	7,461	−9.63%	8,256	−1.71%	8,400	Conejos County	map	37°12′03″N 106°11′29″W
Lake County	42	7,365	−0.95%	7,436	+1.72%	7,310	−6.45%	7,814	Lake County	map	39°12′08″N 106°20′42″W
Huerfano County	43	7,055	+3.45%	6,820	+1.62%	6,711	−14.61%	7,859	Huerfano County	map	37°41′05″N 104°57′38″W
Kit Carson County	44	6,994	−1.31%	7,087	−14.30%	8,270	+3.21%	8,013	Kit Carson County	map	39°18′20″N 102°36′10″W
Saguache County	45	6,688	+5.03%	6,368	+4.26%	6,108	+3.46%	5,904	Saguache County	map	38°04′51″N 106°16′51″W
Rio Blanco County	46	6,569	+0.61%	6,529	−2.06%	6,666	+11.25%	5,992	Rio Blanco County	map	39°58′50″N 108°13′05″W
Gilpin County	47	5,926	+2.03%	5,808	+6.75%	5,441	+14.64%	4,746	Gilpin County	map	39°51′27″N 105°31′21″W
Bent County	48	5,681	+0.55%	5,650	−13.06%	6,499	+8.39%	5,996	Bent County	map	37°57′17″N 103°04′18″W
Crowley County	49	5,636	−4.83%	5,922	+1.70%	5,823	+5.60%	5,514	Crowley County	map	38°19′36″N 103°47′05″W
Custer County	50	5,534	+17.64%	4,704	+10.55%	4,255	+21.29%	3,508	Custer County	map	38°06′31″N 105°22′03″W
Lincoln County	51	5,480	−3.44%	5,675	+3.80%	5,467	−10.22%	6,089	Lincoln County	map	38°59′13″N 103°30′53″W
Ouray County	52	5,176	+6.20%	4,874	+9.87%	4,436	+18.39%	3,747	Ouray County	map	38°09′19″N 107°46′09″W
Washington County	53	4,855	+0.79%	4,817	+0.06%	4,814	−2.19%	4,922	Washington County	map	39°58′14″N 103°12′06″W
Phillips County	54	4,476	−1.19%	4,530	+1.98%	4,442	−0.96%	4,485	Phillips County	map	40°35′38″N 102°21′27″W
Costilla County	55	3,628	+3.69%	3,499	−0.71%	3,524	−3.74%	3,661	Costilla County	map	37°16′40″N 105°25′42″W
Baca County	56	3,344	−4.62%	3,506	−7.44%	3,788	−16.14%	4,517	Baca County	map	37°19′09″N 102°33′38″W
Dolores County	57	2,513	+8.04%	2,326	+12.69%	2,064	+11.93%	1,844	Dolores County	map	37°45′07″N 108°31′02″W
Sedgwick County	58	2,299	−4.37%	2,404	+1.05%	2,379	−13.40%	2,747	Sedgwick County	map	40°52′33″N 102°21′06″W
Cheyenne County	59	1,727	−1.20%	1,748	−4.79%	1,836	−17.63%	2,229	Cheyenne County	map	38°49′41″N 102°36′12″W
Kiowa County	60	1,384	−4.29%	1,446	+3.43%	1,398	−13.81%	1,622	Kiowa County	map	38°26′00″N 102°44′26″W
Jackson County	61	1,309	−5.08%	1,379	−1.08%	1,394	−11.60%	1,577	Jackson County	map	40°39′58″N 106°20′32″W
Mineral County	62	944	+9.13%	865	+21.49%	712	−14.32%	831	Mineral County	map	37°40′07″N 106°55′27″W
San Juan County	63	802	+13.76%	705	+0.86%	699	+25.27%	558	San Juan County	map	37°45′50″N 107°40′34″W
Hinsdale County	64	765	−2.92%	788	−6.52%	843	+6.44%	792	Hinsdale County	map	37°49′15″N 107°18′01″W
State of Colorado	State	5,877,610	+1.80%	5,773,714	+14.80%	5,029,196	+16.92%	4,301,262	State of Colorado	map	38°59′50″N 105°32′52″W

See also

• Bibliography of Colorado
• Geography of Colorado
• History of Colorado
• Index of Colorado-related articles
• List of Colorado-related lists
  • List of counties in Colorado
    • List of Colorado counties by per capita income
    • List of Colorado counties by socioeconomic factors
    • List of Colorado county high points
    • List of county courthouses in Colorado
    • List of county seats in Colorado

Outline of Colorado

External links

• United States Department of Commerce
  • United States Census Bureau
• State of Colorado
  • Department of Local Affairs
• Colorado County Clerks Association
• History Colorado