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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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This list ranks the 64 counties of the U.S. State of Colorado[1] by population as of July 1, 2024, 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 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.[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]
2024 rank 2024 estimates[a] Change 2020 Census Change 2010 Census Change 2000 Census
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 / 38.8320°N 104.5254°W / 38.8320; -104.5254 (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 / 39.7620°N 104.8760°W / 39.7620; -104.8760 (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′21″W / 39.6503°N 104.3393°W / 39.6503; -104.3393 (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 / 39.5859°N 105.2506°W / 39.5859; -105.2506 (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 / 39.8742°N 104.3378°W / 39.8742; -104.3378 (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 / 39.3296°N 104.9297°W / 39.3296; -104.9297 (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 / 40.6662°N 105.4607°W / 40.6662; -105.4607 (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 / 40.5542°N 104.3938°W / 40.5542; -104.3938 (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 / 40.0925°N 105.3577°W / 40.0925; -105.3577 (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 / 38.1732°N 104.5128°W / 38.1732; -104.5128 (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′06″N 108°28′04″W / 39.0182°N 108.4677°W / 39.0182; -108.4677 (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 / 39.9541°N 105.0527°W / 39.9541; -105.0527 (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 / 39.6003°N 107.9052°W / 39.6003; -107.9052 (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 / 37.2864°N 107.8436°W / 37.2864; -107.8436 (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′42″W / 39.6277°N 106.6951°W / 39.6277; -106.6951 (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 / 38.4732°N 105.4394°W / 38.4732; -105.4394 (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 / 38.4027°N 108.2702°W / 38.4027; -108.2702 (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 / 38.8614°N 107.8632°W / 38.8614; -107.8632 (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 / 39.6340°N 106.1160°W / 39.6340; -106.1160 (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 / 40.2626°N 103.8098°W / 40.2626; -103.8098 (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 / 39.2864°N 104.1355°W / 39.2864; -104.1355 (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 / 37.3383°N 108.5970°W / 37.3383; -108.5970 (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 / 40.4841°N 106.9908°W / 40.4841; -106.9908 (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 / 38.8822°N 105.1617°W / 38.8822; -105.1617 (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 / 38.7466°N 106.1938°W / 38.7466; -106.1938 (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 / 40.7246°N 103.1101°W / 40.7246; -103.1101 (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 / 39.1188°N 105.7171°W / 39.1188; -105.7171 (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 / 37.9026°N 103.7166°W / 37.9026; -103.7166 (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 / 38.6664°N 107.0319°W / 38.6664; -107.0319 (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 / 37.5728°N 105.7884°W / 37.5728; -105.7884 (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 / 39.2172°N 106.9165°W / 39.2172; -106.9165 (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 / 40.1025°N 106.1181°W / 40.1025; -106.1181 (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 / 37.3166°N 104.0391°W / 37.3166; -104.0391 (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 / 37.1937°N 107.0481°W / 37.1937; -107.0481 (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 / 40.6187°N 108.2075°W / 40.6187; -108.2075 (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 / 37.9549°N 102.3934°W / 37.9549; -102.3934 (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°23′00″W / 37.5825°N 106.3832°W / 37.5825; -106.3832 (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 / 40.0022°N 102.4243°W / 40.0022; -102.4243 (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′39″W / 39.6891°N 105.6443°W / 39.6891; -105.6443 (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 / 38.0042°N 108.4057°W / 38.0042; -108.4057 (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 / 37.2008°N 106.1915°W / 37.2008; -106.1915 (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 / 39.2023°N 106.3449°W / 39.2023; -106.3449 (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 / 39.3056°N 102.6029°W / 39.3056; -102.6029 (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 / 37.6847°N 104.9605°W / 37.6847; -104.9605 (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 / 38.0807°N 106.2809°W / 38.0807; -106.2809 (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′51″N 108°13′04″W / 39.9807°N 108.2179°W / 39.9807; -108.2179 (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 / 39.8575°N 105.5226°W / 39.8575; -105.5226 (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 / 37.9548°N 103.0717°W / 37.9548; -103.0717 (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 / 38.3266°N 103.7848°W / 38.3266; -103.7848 (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 / 38.9870°N 103.5146°W / 38.9870; -103.5146 (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 / 38.1087°N 105.3674°W / 38.1087; -105.3674 (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 / 38.1554°N 107.7691°W / 38.1554; -107.7691 (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′13″N 103°12′06″W / 39.9704°N 103.2016°W / 39.9704; -103.2016 (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 / 40.5939°N 102.3576°W / 40.5939; -102.3576 (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 / 37.2777°N 105.4284°W / 37.2777; -105.4284 (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 / 37.3191°N 102.5605°W / 37.3191; -102.5605 (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 / 37.7520°N 108.5173°W / 37.7520; -108.5173 (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′34″N 102°21′06″W / 40.8760°N 102.3518°W / 40.8760; -102.3518 (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′42″N 102°36′12″W / 38.8282°N 102.6034°W / 38.8282; -102.6034 (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 / 38.4333°N 102.7405°W / 38.4333; -102.7405 (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′33″W / 40.6661°N 106.3424°W / 40.6661; -106.3424 (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 / 37.6687°N 106.9241°W / 37.6687; -106.9241 (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 / 37.7640°N 107.6762°W / 37.7640; -107.6762 (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 / 37.8208°N 107.3004°W / 37.8208; -107.3004 (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)

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, 2024,[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 (64 counties)". Colorado Department of Local Affairs. 2025. Retrieved March 18, 2025.
  2. ^ "Annual Estimates of the Resident Population for Counties in Colorado: April 1, 2020 to July 1, 2024 (CO-EST2024-POP-08)". United States Census Bureau, United States Department of Commerce. March 2025. Retrieved March 16, 2025.
  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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