Colorado Counties by Population (2024)
by Kristen Carney 
Updated: June 20, 2024
The most populated counties in Colorado are El Paso County with 744,215, Denver County at 716,577, Arapahoe County with 656,061, Jefferson County at 576,366, and Adams County with 533,365. You can get the most current Census population data for all 64 Colorado counties, sorted from the most populous counties in Colorado to the least, according to the 2023 Population Estimates Program.
Sure, you can copy this list right into your favorite spreadsheet tool. Or save yourself formatting headaches and grab the latest Colorado counties population data as a ready-to-use Excel™ file below. It's time to stop searching and start digging into data!
| Rank | County | Population |
|---|---|---|
| 1 | El Paso County | 744,215 |
| 2 | Denver County | 716,577 |
| 3 | Arapahoe County | 656,061 |
| 4 | Jefferson County | 576,366 |
| 5 | Adams County | 533,365 |
| 6 | Douglas County | 383,906 |
| 7 | Larimer County | 370,771 |
| 8 | Weld County | 359,442 |
| 9 | Boulder County | 326,831 |
| 10 | Pueblo County | 169,422 |
| 11 | Mesa County | 159,681 |
| 12 | Broomfield County | 76,860 |
| 13 | Garfield County | 62,707 |
| 14 | La Plata County | 56,407 |
| 15 | Eagle County | 54,381 |
| 16 | Fremont County | 50,318 |
| 17 | Montrose County | 44,156 |
| 18 | Delta County | 31,746 |
| 19 | Summit County | 30,465 |
| 20 | Morgan County | 29,524 |
| 21 | Elbert County | 28,806 |
| 22 | Montezuma County | 26,531 |
| 23 | Routt County | 25,064 |
| 24 | Teller County | 24,617 |
| 25 | Logan County | 20,619 |
| 26 | Chaffee County | 20,617 |
| 27 | Otero County | 18,136 |
| 28 | Park County | 18,117 |
| 29 | Gunnison County | 17,321 |
| 30 | Alamosa County | 16,655 |
| 31 | Pitkin County | 16,640 |
| 32 | Grand County | 15,935 |
| 33 | Las Animas County | 14,348 |
| 34 | Archuleta County | 14,189 |
| 35 | Moffat County | 13,327 |
| 36 | Prowers County | 11,751 |
| 37 | Rio Grande County | 11,188 |
| 38 | Yuma County | 9,862 |
| 39 | Clear Creek County | 9,147 |
| 40 | San Miguel County | 7,868 |
| 41 | Conejos County | 7,521 |
| 42 | Lake County | 7,365 |
| 43 | Huerfano County | 7,055 |
| 44 | Kit Carson County | 6,994 |
| 45 | Saguache County | 6,688 |
| 46 | Rio Blanco County | 6,569 |
| 47 | Gilpin County | 5,926 |
| 48 | Bent County | 5,681 |
| 49 | Crowley County | 5,636 |
| 50 | Custer County | 5,534 |
| 51 | Lincoln County | 5,480 |
| 52 | Ouray County | 5,176 |
| 53 | Washington County | 4,855 |
| 54 | Phillips County | 4,476 |
| 55 | Costilla County | 3,628 |
| 56 | Baca County | 3,344 |
| 57 | Dolores County | 2,513 |
| 58 | Sedgwick County | 2,299 |
| 59 | Cheyenne County | 1,727 |
| 60 | Kiowa County | 1,384 |
| 61 | Jackson County | 1,309 |
| 62 | Mineral County | 944 |
| 63 | San Juan County | 802 |
| 64 | Hinsdale County | 765 |
|
United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2023. U.S. Census Bureau, Population Division. Web. May 2024. http://www.census.gov/. |
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