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List of Colorado counties by population

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Coordinates: 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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A map showing the location of the U.S. State of Colorado.
The location of the State of Colorado in the United States of America.
The 64 counties of the U.S. State of Colorado.

This list ranks the 64 counties of the U.S. State of Colorado[1] by population as of July 1, 2023, as estimated by the United States Census Bureau.[a] This list also details the county population changes since the 2000 United States Census.[3]

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.[a]

Counties

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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[1] Population[3] County website CDOT county map Coordinates[b]
2023 rank 2023 estimates[a] 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 / 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)

See also

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Outline of Colorado

Notes

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  1. ^ a b c United States Census Bureau estimates of county population as of July 1, 2023,[2]
  2. ^ The centroid geographic coordinates of the county as determined by the United States Census Bureau.[4]

References

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  1. ^ a b "Colorado Counties". Colorado Department of Local Affairs. 2021. Retrieved November 13, 2021.
  2. ^ "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.
  3. ^ a b "QuickFacts for Colorado". United States Census Bureau. Retrieved September 19, 2022.
  4. ^ "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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