# List of Colorado counties by population

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, 2024, 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 2024 population estimate of 752,772 remains the most populous county in Colorado, while Hinsdale County with a 2024 population of 747 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

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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 | Population | Population | Population | Population | Population | Population | Population | County website | CDOT county map | Coordinates |
| County | 2024 rank | 2024 estimates | Change | 2020 Census | Change | 2010 Census | Change | 2000 Census | County website | CDOT county map | Coordinates |
| El Paso County | 1 | 752,772 | +3.06% | 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 | 729,019 | +1.89% | 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 | 666,918 | +1.81% | 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 | 578,533 | −0.75% | 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 | 542,973 | +4.50% | 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 | 393,995 | +10.06% | 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 | 374,574 | +4.32% | 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 | 369,745 | +12.39% | 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 | 330,262 | −0.15% | 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 | 169,866 | +1.01% | 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 | 161,260 | +3.57% | 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 | 78,323 | +5.68% | 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 | 63,167 | +2.40% | 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 | 56,823 | +2.13% | 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 | 54,330 | −2.51% | 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 | 50,093 | +2.36% | 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 | 44,806 | +4.98% | 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 | 32,215 | +3.27% | 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 | 30,882 | −0.56% | 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 | 30,300 | +4.08% | 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 | 29,382 | +12.74% | 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 | 26,841 | +3.84% | 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 | 25,243 | +1.67% | 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 | 24,862 | +0.62% | 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) |
| Chaffee County | 25 | 20,780 | +6.70% | 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) |
| Logan County | 26 | 20,755 | −3.59% | 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) |
| Park County | 27 | 18,316 | +5.32% | 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) |
| Otero County | 28 | 17,991 | −3.74% | 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) |
| Gunnison County | 29 | 17,310 | +2.32% | 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 | 16,689 | +1.91% | 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 | 16,643 | −4.12% | 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 | 16,154 | +2.78% | 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 | 14,518 | −0.25% | 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 | 14,112 | +5.64% | 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 | 13,142 | −1.13% | 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 | 11,957 | −0.35% | 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 | 11,132 | −3.53% | 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 | 10,048 | +0.60% | 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 | 9,076 | −3.42% | 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 | 7,819 | −3.13% | 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 | 7,549 | +1.18% | 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 | 7,369 | −0.90% | 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) |
| Kit Carson County | 43 | 7,080 | −0.10% | 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) |
| Huerfano County | 434 | 6,988 | +2.46% | 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) |
| Saguache County | 45 | 6,670 | +4.74% | 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 | 6,607 | +1.19% | 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 | 5,963 | +2.67% | 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 | 5,779 | +2.28% | 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 | 5,600 | −5.44% | 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) |
| Lincoln County | 50 | 5,598 | −1.36% | 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) |
| Custer County | 51 | 5,553 | +18.05% | 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) |
| Ouray County | 52 | 5,197 | +6.63% | 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 | 4,771 | −0.95% | 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 | 4,488 | −0.93% | 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 | 3,686 | +5.34% | 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 | 3,367 | −3.96% | 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 | 2,467 | +6.06% | 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 | 2,257 | −6.11% | 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 | 1,712 | −2.06% | 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 | 1,392 | −3.73% | 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 | 1,273 | −7.69% | 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 | 933 | +7.86% | 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 | 821 | +16.45% | 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 | 747 | −5.20% | 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 | 5,957,493 | +3.18% | 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) |