Ranking of Colorado Counties By Population with American Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 205.97K people in Colorado with American ancestry. Among all Colorado counties, El Paso County had the highest population with American ancestry (31.74K), followed by Arapahoe County (23.51K), and Jefferson County (19.30K).
The chart and table below shows the top 10 counties with high number of people with American ancestry.
You can see similar information for other states and for other ancestry groups in Colorado.
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Related Topics: Colorado ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Colorado Counties By Population with American Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | El Paso County | 31741 |
| 2 | Arapahoe County | 23513 |
| 3 | Jefferson County | 19302 |
| 4 | Denver County | 18709 |
| 5 | Adams County | 15871 |
| 6 | Larimer County | 14545 |
| 7 | Weld County | 13306 |
| 8 | Douglas County | 13078 |
| 9 | Boulder County | 9715 |
| 10 | Mesa County | 6357 |
| 11 | Pueblo County | 5463 |
| 12 | Broomfield County | 2410 |
| 13 | Montrose County | 2345 |
| 14 | Montezuma County | 2334 |
| 15 | Garfield County | 2162 |
| 16 | La Plata County | 2138 |
| 17 | Delta County | 1884 |
| 18 | Morgan County | 1573 |
| 19 | Eagle County | 1463 |
| 20 | Fremont County | 1437 |
| 21 | Elbert County | 1140 |
| 22 | Moffat County | 959 |
| 23 | Prowers County | 956 |
| 24 | Teller County | 904 |
| 25 | Park County | 846 |
| 26 | Otero County | 825 |
| 27 | Chaffee County | 821 |
| 28 | Summit County | 713 |
| 29 | Logan County | 637 |
| 30 | Gilpin County | 590 |
| 30 | Gunnison County | 590 |
| 31 | Pitkin County | 581 |
| 32 | San Miguel County | 488 |
| 33 | Kit Carson County | 459 |
| 34 | Clear Creek County | 457 |
| 34 | Yuma County | 457 |
| 35 | Routt County | 454 |
| 36 | Las Animas County | 444 |
| 37 | Dolores County | 424 |
| 38 | Alamosa County | 387 |
| 39 | Archuleta County | 309 |
| 40 | Rio Grande County | 305 |
| 41 | Grand County | 257 |
| 42 | Ouray County | 225 |
| 43 | Saguache County | 223 |
| 44 | Conejos County | 218 |
| 45 | Rio Blanco County | 217 |
| 46 | Washington County | 212 |
| 47 | Huerfano County | 194 |
| 48 | Bent County | 191 |
| 49 | Crowley County | 180 |
| 50 | Baca County | 172 |
| 51 | Phillips County | 142 |
| 52 | Lincoln County | 137 |
| 53 | Costilla County | 131 |
| 54 | Custer County | 105 |
| 55 | Sedgwick County | 76 |
| 56 | Kiowa County | 68 |
| 57 | Cheyenne County | 49 |
| 58 | Lake County | 48 |
| 59 | Mineral County | 12 |
| 60 | Jackson County | 9 |
| 60 | San Juan County | 9 |
| 61 | Hinsdale County | 7 |