List of Colorado counties by population

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.

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.

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

Map this section's coordinates in "List of Colorado counties by population" using OpenStreetMap

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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
County	2023 rank	2023 estimates	Change	2020 Census	Change	2010 Census	Change	2000 Census	County website	CDOT county map	Coordinates
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 / 38.8320014°N 104.5253965°W / 38.8320014; -104.5253965 (El Paso County, Colorado)
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 / 39.7619809°N 104.8760040°W / 39.7619809; -104.8760040 (City and County of Denver, Colorado)
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 / 39.6503229°N 104.3393175°W / 39.6503229; -104.3393175 (Arapahoe County, Colorado)
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 / 39.5858881°N 105.2506412°W / 39.5858881; -105.2506412 (Jefferson County, Colorado)
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 / 39.8741789°N 104.3378450°W / 39.8741789; -104.3378450 (Adams County, Colorado)
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 / 39.3296108°N 104.9297053°W / 39.3296108; -104.9297053 (Douglas County, Colorado)
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 / 40.6661903°N 105.4607444°W / 40.6661903; -105.4607444 (Larimer County, Colorado)
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 / 40.5542451°N 104.3937513°W / 40.5542451; -104.3937513 (Weld County, Colorado)
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 / 40.0924576°N 105.3577120°W / 40.0924576; -105.3577120 (Boulder County, Colorado)
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 / 38.1732322°N 104.5127765°W / 38.1732322; -104.5127765 (Pueblo County, Colorado)
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 / 39.0181664°N 108.4677131°W / 39.0181664; -108.4677131 (Mesa County, Colorado)
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 / 39.9541268°N 105.0527103°W / 39.9541268; -105.0527103 (City and County of Broomfield, Colorado)
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 / 39.6003285°N 107.9052109°W / 39.6003285; -107.9052109 (Garfield County, Colorado)
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 / 37.2863619°N 107.8435620°W / 37.2863619; -107.8435620 (La Plata County, Colorado)
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 / 39.6277366°N 106.6951442°W / 39.6277366; -106.6951442 (Eagle County, Colorado)
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 / 38.4732142°N 105.4394323°W / 38.4732142; -105.4394323 (Fremont County, Colorado)
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 / 38.4026876°N 108.2701893°W / 38.4026876; -108.2701893 (Montrose County, Colorado)
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 / 38.8613998°N 107.8631974°W / 38.8613998; -107.8631974 (Delta County, Colorado)
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 / 39.6339611°N 106.1160413°W / 39.6339611; -106.1160413 (Summit County, Colorado)
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 / 40.2625815°N 103.8098295°W / 40.2625815; -103.8098295 (Morgan County, Colorado)
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 / 39.2864464°N 104.1354658°W / 39.2864464; -104.1354658 (Elbert County, Colorado)
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 / 37.3383013°N 108.5970269°W / 37.3383013; -108.5970269 (Montezuma County, Colorado)
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 / 40.4840785°N 106.9907816°W / 40.4840785; -106.9907816 (Routt County, Colorado)
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 / 38.8821769°N 105.1617222°W / 38.8821769; -105.1617222 (Teller County, Colorado)
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 / 40.7245834°N 103.1100639°W / 40.7245834; -103.1100639 (Logan County, Colorado)
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 / 38.7465981°N 106.1937627°W / 38.7465981; -106.1937627 (Chaffee County, Colorado)
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 / 37.9025553°N 103.7165564°W / 37.9025553; -103.7165564 (Otero County, Colorado)
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 / 39.1187954°N 105.7171190°W / 39.1187954; -105.7171190 (Park County, Colorado)
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 / 38.6663669°N 107.0318806°W / 38.6663669; -107.0318806 (Gunnison County, Colorado)
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 / 37.5728342°N 105.7884000°W / 37.5728342; -105.7884000 (Alamosa County, Colorado)
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 / 39.2172422°N 106.9164625°W / 39.2172422; -106.9164625 (Pitkin County, Colorado)
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 / 40.1025426°N 106.1181476°W / 40.1025426; -106.1181476 (Grand County, Colorado)
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 / 37.3166220°N 104.0391104°W / 37.3166220; -104.0391104 (Las Animas County, Colorado)
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 / 37.1937061°N 107.0481382°W / 37.1937061; -107.0481382 (Archuleta County, Colorado)
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 / 40.6187129°N 108.2074659°W / 40.6187129; -108.2074659 (Moffat County, Colorado)
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 / 37.9549242°N 102.3933533°W / 37.9549242; -102.3933533 (Prowers County, Colorado)
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 / 37.5825367°N 106.3831577°W / 37.5825367; -106.3831577 (Rio Grande County, Colorado)
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 / 40.0022004°N 102.4242526°W / 40.0022004; -102.4242526 (Yuma County, Colorado)
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 / 39.6890622°N 105.6443074°W / 39.6890622; -105.6443074 (Clear Creek County, Colorado)
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 / 38.0042019°N 108.4057022°W / 38.0042019; -108.4057022 (San Miguel County, Colorado)
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 / 37.2007929°N 106.1914806°W / 37.2007929; -106.1914806 (Conejos County, Colorado)
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 / 39.2023129°N 106.3449111°W / 39.2023129; -106.3449111 (Lake County, Colorado)
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 / 37.6846648°N 104.9605114°W / 37.6846648; -104.9605114 (Huerfano County, Colorado)
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 / 39.3055557°N 102.6029123°W / 39.3055557; -102.6029123 (Kit Carson County, Colorado)
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 / 38.0807339°N 106.2808607°W / 38.0807339; -106.2808607 (Saguache County, Colorado)
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 / 39.9806725°N 108.2179271°W / 39.9806725; -108.2179271 (Rio Blanco County, Colorado)
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 / 39.8575395°N 105.5225847°W / 39.8575395; -105.5225847 (Gilpin County, Colorado)
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 / 37.9548094°N 103.0717149°W / 37.9548094; -103.0717149 (Bent County, Colorado)
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 / 38.3265917°N 103.7848382°W / 38.3265917; -103.7848382 (Crowley County, Colorado)
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 / 38.1086939°N 105.3674060°W / 38.1086939; -105.3674060 (Custer County, Colorado)
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 / 38.9869846°N 103.5146043°W / 38.9869846; -103.5146043 (Lincoln County, Colorado)
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 / 38.1553962°N 107.7691411°W / 38.1553962; -107.7691411 (Ouray County, Colorado)
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 / 39.9704267°N 103.2016452°W / 39.9704267; -103.2016452 (Washington County, Colorado)
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 / 40.5939029°N 102.3575846°W / 40.5939029; -102.3575846 (Phillips County, Colorado)
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 / 37.2776823°N 105.4283908°W / 37.2776823; -105.4283908 (Costilla County, Colorado)
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 / 37.3191050°N 102.5604802°W / 37.3191050; -102.5604802 (Baca County, Colorado)
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 / 37.7519785°N 108.5173060°W / 37.7519785; -108.5173060 (Dolores County, Colorado)
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 / 40.8759564°N 102.3517903°W / 40.8759564; -102.3517903 (Sedgwick County, Colorado)
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 / 38.8281780°N 102.6034141°W / 38.8281780; -102.6034141 (Cheyenne County, Colorado)
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 / 38.4332694°N 102.7404800°W / 38.4332694; -102.7404800 (Kiowa County, Colorado)
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 / 40.6661359°N 106.3423570°W / 40.6661359; -106.3423570 (Jackson County, Colorado)
Mineral County	62	944	+9.13%	865	+21.49%	712	−14.32%	831	Mineral County	map	37°40′07″N 106°55′27″W / 37.6687329°N 106.9240618°W / 37.6687329; -106.9240618 (Mineral County, Colorado)
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 / 37.7640122°N 107.6762274°W / 37.7640122; -107.6762274 (San Juan County, Colorado)
Hinsdale County	64	765	−2.92%	788	−6.52%	843	+6.44%	792	Hinsdale County	map	37°49′15″N 107°18′01″W / 37.8208029°N 107.3003634°W / 37.8208029; -107.3003634 (Hinsdale County, Colorado)
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 / 38.9972°N 105.5478°W / 38.9972; -105.5478 (State of Colorado)

Notes

^ United States Census Bureau estimates of county population as of July 1, 2023,
The centroid geographic coordinates of the county as determined by the United States Census Bureau.

References

^ "Colorado Counties". Colorado Department of Local Affairs. 2021. Retrieved November 13, 2021.
"Annual Estimates of the Resident Population for Counties in Colorado: April 1, 2020 to July 1, 2023 (CO-EST2023-POP-08)". United States Census Bureau, United States Department of Commerce. March 2024. Retrieved March 20, 2024.
^ "QuickFacts for Colorado". United States Census Bureau. Retrieved September 19, 2022.
"State of Colorado Counties – Current/TAB20 – Data as of January 1, 2020". United States Census Bureau. January 1, 2020. Retrieved September 29, 2022.

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38°59′50″N 105°32′52″W / 38.9972°N 105.5478°W / 38.9972; -105.5478 (State of Colorado)

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