List of Colorado counties by population

Last updated

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]

Contents

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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For Colorado counties by population, see the List of Colorado counties by population.
For Colorado counties by statistical area, see the List of statistical areas in Colorado.
For Colorado county seats, see the List of county seats in Colorado.
For Colorado county courthouses, see the List of Colorado county courthouses.
For Colorado county per capita income, see the List of Colorado counties by per capita income
For Colorado county socioeconomics, see the List of Colorado counties by socioeconomic factors.
For Colorado county highest elevation points, see the List of Colorado county high points.
For Colorado municipalities by county, see the List of Colorado municipalities by county.
For Colorado populated places by county, see the List of Colorado populated places by county.
For Colorado county maps, see the State of Colorado Map Viewer.
The 64 Counties of the State of Colorado

County [1] Population [3] County websiteCoordinates [b]
2024 rank2024 estimates [a] Change 2020 Census Change 2010 Census Change 2000 Census
El Paso County 1752,772+3.06%730,395+17.38%622,263+20.38%516,934 El Paso County
City and County of Denver 2729,019+1.89%715,522+19.22%600,158+8.37%553,805 City and County of Denver
Arapahoe County 3666,918+1.81%655,070+14.52%572,003+17.01%488,829 Arapahoe County
Jefferson County 4578,533−0.75%582,910+9.05%534,543+1.73%525,449 Jefferson County
Adams County 5542,973+4.50%519,572+17.66%441,603+26.87%348,076 Adams County
Douglas County 6393,995+10.06%357,978+25.40%285,465+62.44%175,732 Douglas County
Larimer County 7374,574+4.32%359,066+19.84%299,630+19.14%251,494 Larimer County
Weld County 8369,745+12.39%328,981+30.12%252,825+39.86%180,766 Weld County
Boulder County 9330,262−0.15%330,758+12.29%294,567+9.19%269,784 Boulder County
Pueblo County 10169,866+1.01%168,162+5.72%159,063+12.42%141,490 Pueblo County
Mesa County 11161,260+3.57%155,703+6.12%146,723+25.47%116,939 Mesa County
City and County of Broomfield 1278,323+5.68%74,112+32.61%55,889+42.57%39,202 City and County of Broomfield
Garfield County 1363,167+2.40%61,685+9.39%56,389+28.78%43,786 Garfield County
La Plata County 1456,823+2.13%55,638+8.38%51,334+16.78%43,957 La Plata County
Eagle County 1554,330−2.51%55,731+6.77%52,197+25.40%41,623 Eagle County
Fremont County 1650,093+2.36%48,939+4.52%46,824+1.48%46,140 Fremont County
Montrose County 1744,806+4.98%42,679+3.40%41,276+23.44%33,438 Montrose County
Delta County 1832,215+3.27%31,196+0.79%30,952+11.24%27,824 Delta County
Summit County 1930,882−0.56%31,055+10.93%27,994+18.82%23,560 Summit County
Morgan County 2030,300+4.08%29,111+3.38%28,159+3.63%27,172 Morgan County
Elbert County 2129,382+12.74%26,062+12.89%23,086+16.27%19,855 Elbert County
Montezuma County 2226,841+3.84%25,849+1.23%25,535+7.19%23,822 Montezuma County
Routt County 2325,243+1.67%24,829+5.61%23,509+19.46%19,679 Routt County
Teller County 2424,862+0.62%24,710+5.82%23,350+13.68%20,541 Teller County
Chaffee County 2520,780+6.70%19,476+9.36%17,809+9.59%16,250 Chaffee County
Logan County 2620,755−3.59%21,528−5.20%22,709+10.42%20,566 Logan County
Park County 2718,316+5.32%17,390+7.31%16,206+11.62%14,519 Park County
Otero County 2817,991−3.74%18,690−0.75%18,831−7.29%20,311 Otero County
Gunnison County 2917,310+2.32%16,918+10.40%15,324+9.46%14,000 Gunnison County
Alamosa County 3016,689+1.91%16,376+6.03%15,445+3.21%14,965 Alamosa County
Pitkin County 3116,643−4.12%17,358+1.22%17,148+15.17%14,889 Pitkin County
Grand County 3216,154+2.78%15,717+5.89%14,843+19.38%12,433 Grand County
Las Animas County 3314,518−0.25%14,555−6.14%15,507+1.94%15,212 Las Animas County
Archuleta County 3414,112+5.64%13,359+10.55%12,084+22.13%9,894 Archuleta County
Moffat County 3513,142−1.13%13,292−3.65%13,795+4.68%13,178 Moffat County
Prowers County 3611,957−0.35%11,999−4.40%12,551−13.34%14,483 Prowers County
Rio Grande County 3711,132−3.53%11,539−3.70%11,982−3.57%12,425 Rio Grande County
Yuma County 3810,048+0.60%9,988−0.55%10,043+2.00%9,846 Yuma County
Clear Creek County 399,076−3.42%9,397+3.40%9,088−1.89%9,263 Clear Creek County
San Miguel County 407,819−3.13%8,072+9.69%7,359+11.62%6,593 San Miguel County
Conejos County 417,549+1.18%7,461−9.63%8,256−1.71%8,400 Conejos County
Lake County 427,369−0.90%7,436+1.72%7,310−6.45%7,814 Lake County
Kit Carson County 437,080−0.10%7,087−14.30%8,270+3.21%8,013 Kit Carson County
Huerfano County 446,988+2.46%6,820+1.62%6,711−14.61%7,859 Huerfano County
Saguache County 456,670+4.74%6,368+4.26%6,108+3.46%5,904 Saguache County
Rio Blanco County 466,607+1.19%6,529−2.06%6,666+11.25%5,992 Rio Blanco County
Gilpin County 475,963+2.67%5,808+6.75%5,441+14.64%4,746 Gilpin County
Bent County 485,779+2.28%5,650−13.06%6,499+8.39%5,996 Bent County
Crowley County 495,600−5.44%5,922+1.70%5,823+5.60%5,514 Crowley County
Lincoln County 505,598−1.36%5,675+3.80%5,467−10.22%6,089 Lincoln County
Custer County 515,553+18.05%4,704+10.55%4,255+21.29%3,508 Custer County
Ouray County 525,197+6.63%4,874+9.87%4,436+18.39%3,747 Ouray County
Washington County 534,771−0.95%4,817+0.06%4,814−2.19%4,922 Washington County
Phillips County 544,488−0.93%4,530+1.98%4,442−0.96%4,485 Phillips County
Costilla County 553,686+5.34%3,499−0.71%3,524−3.74%3,661 Costilla County
Baca County 563,367−3.96%3,506−7.44%3,788−16.14%4,517 Baca County
Dolores County 572,467+6.06%2,326+12.69%2,064+11.93%1,844 Dolores County
Sedgwick County 582,257−6.11%2,404+1.05%2,379−13.40%2,747 Sedgwick County
Cheyenne County 591,712−2.06%1,748−4.79%1,836−17.63%2,229 Cheyenne County
Kiowa County 601,392−3.73%1,446+3.43%1,398−13.81%1,622 Kiowa County
Jackson County 611,273−7.69%1,379−1.08%1,394−11.60%1,577 Jackson County
Mineral County 62933+7.86%865+21.49%712−14.32%831 Mineral County
San Juan County 63821+16.45%705+0.86%699+25.27%558 San Juan County
Hinsdale County 64747−5.20%788−6.52%843+6.44%792 Hinsdale County
State of Colorado State5,957,493+3.18%5,773,714+14.80%5,029,196+16.92%4,301,262 State of Colorado

See also

Notes

  1. 1 2 3 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

  1. 1 2 "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. 1 2 "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.

38°59′50″N105°32′52″W / 38.9972°N 105.5478°W / 38.9972; -105.5478 (State of Colorado)

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