Colorado / Counties by Population
Below are the 64 Colorado counties sorted by population from 1 to 64 . The population data are from the 2021 Population Estimates Program and 2020 American Community Survey. You can copy and paste this list directly into your favorite spreadsheet program. Don't you just adore lovely numbers listed nicely in columns & rows? We do!
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| Rank | County | Population |
|---|---|---|
| 1 | El Paso County | 737,867 |
| 2 | Denver County | 711,463 |
| 3 | Arapahoe County | 654,900 |
| 4 | Jefferson County | 579,581 |
| 5 | Adams County | 522,140 |
| 6 | Douglas County | 368,990 |
| 7 | Larimer County | 362,533 |
| 8 | Weld County | 340,036 |
| 9 | Boulder County | 329,543 |
| 10 | Pueblo County | 169,622 |
| 11 | Mesa County | 157,335 |
| 12 | Broomfield County | 75,325 |
| 13 | Garfield County | 62,161 |
| 14 | La Plata County | 56,250 |
| 15 | Eagle County | 55,727 |
| 16 | Fremont County | 49,661 |
| 17 | Montrose County | 43,168 |
| 18 | Delta County | 31,661 |
| 19 | Summit County | 30,941 |
| 20 | Morgan County | 29,008 |
| 21 | Elbert County | 27,128 |
| 22 | Montezuma County | 26,175 |
| 23 | Routt County | 25,091 |
| 24 | Teller County | 24,926 |
| 25 | Logan County | 21,487 |
| 26 | Chaffee County | 20,074 |
| 27 | Otero County | 18,594 |
| 28 | Park County | 17,720 |
| 29 | Pitkin County | 17,348 |
| 30 | Gunnison County | 17,281 |
| 31 | Alamosa County | 16,547 |
| 32 | Grand County | 15,860 |
| 33 | Las Animas County | 14,633 |
| 34 | Archuleta County | 13,790 |
| 35 | Moffat County | 13,185 |
| 36 | Prowers County | 11,996 |
| 37 | Rio Grande County | 11,408 |
| 38 | Yuma County | 9,941 |
| 39 | Clear Creek County | 9,446 |
| 40 | San Miguel County | 8,074 |
| 41 | Conejos County | 7,612 |
| 42 | Lake County | 7,407 |
| 43 | Kit Carson County | 6,950 |
| 44 | Huerfano County | 6,920 |
| 45 | Rio Blanco County | 6,476 |
| 46 | Saguache County | 6,471 |
| 47 | Crowley County | 6,012 |
| 48 | Gilpin County | 5,873 |
| 49 | Bent County | 5,759 |
| 50 | Lincoln County | 5,688 |
| 51 | Custer County | 5,045 |
| 52 | Ouray County | 5,035 |
| 53 | Washington County | 4,861 |
| 54 | Phillips County | 4,512 |
| 55 | Costilla County | 3,625 |
| 56 | Baca County | 3,514 |
| 57 | Dolores County | 2,397 |
| 58 | Sedgwick County | 2,336 |
| 59 | Cheyenne County | 1,707 |
| 60 | Kiowa County | 1,452 |
| 61 | Jackson County | 1,363 |
| 62 | Mineral County | 924 |
| 63 | Hinsdale County | 781 |
| 64 | San Juan County | 733 |
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United States Census Bureau. B01001 SEX BY AGE, 2020 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 17 March 2022. http://www.census.gov/. United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2021. U.S. Census Bureau, Population Division. Web. May 2022. http://www.census.gov/. |
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