Ranking of Colorado Counties By Population Aged 25 years and above with an Educational attainment of Bachelors or Higher in 2021 (ACS-5Yrs)
Updated on September 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the population of Colorado (aged 25 years and above) who had an educational attainment of Bachelors or Higher was 1,686,169. Among all Colorado counties, Denver County had the highest population (aged 25 years and above) with an educational attainment of Bachelors or Higher (270,034), followed by Jefferson County (202,518), and Arapahoe County (198,573).
The chart below shows the top 10 Colorado counties, and the table below shows the ranking of all Colorado counties.
You can see similar information for other educational attainments.
You can also see similar information for other states and for the United States.
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Related Topics: Colorado ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of Colorado Counties By Population (Aged 25yrs+) with an Educational Attainment of Bachelors or Higher in 2021
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| Rank | County | Number of People |
|---|---|---|
| 1 | Denver County | 270034 |
| 2 | Jefferson County | 202518 |
| 3 | Arapahoe County | 198573 |
| 4 | El Paso County | 186376 |
| 5 | Douglas County | 139774 |
| 6 | Boulder County | 137939 |
| 7 | Larimer County | 116607 |
| 8 | Adams County | 88360 |
| 9 | Weld County | 61569 |
| 10 | Mesa County | 31642 |
| 11 | Broomfield County | 29398 |
| 12 | Pueblo County | 27215 |
| 13 | Eagle County | 20252 |
| 14 | La Plata County | 18796 |
| 15 | Garfield County | 13481 |
| 16 | Summit County | 12777 |
| 17 | Routt County | 9498 |
| 18 | Pitkin County | 8384 |
| 19 | Montrose County | 8027 |
| 20 | Teller County | 7089 |
| 21 | Fremont County | 7059 |
| 22 | Elbert County | 6546 |
| 23 | Gunnison County | 6196 |
| 24 | Chaffee County | 6025 |
| 25 | Montezuma County | 5567 |
| 26 | Delta County | 5255 |
| 27 | Park County | 4596 |
| 28 | Grand County | 4475 |
| 29 | Archuleta County | 4071 |
| 30 | Clear Creek County | 4060 |
| 31 | San Miguel County | 3741 |
| 32 | Morgan County | 3270 |
| 33 | Logan County | 3078 |
| 34 | Alamosa County | 2516 |
| 35 | Otero County | 2401 |
| 36 | Rio Grande County | 2306 |
| 37 | Gilpin County | 2283 |
| 38 | Las Animas County | 1997 |
| 39 | Lake County | 1931 |
| 40 | Ouray County | 1843 |
| 41 | Moffat County | 1684 |
| 42 | Yuma County | 1538 |
| 43 | Custer County | 1422 |
| 44 | Prowers County | 1301 |
| 45 | Huerfano County | 1295 |
| 46 | Conejos County | 1219 |
| 47 | Saguache County | 1212 |
| 48 | Rio Blanco County | 1029 |
| 49 | Kit Carson County | 871 |
| 50 | Washington County | 747 |
| 51 | Phillips County | 742 |
| 52 | Lincoln County | 703 |
| 53 | Bent County | 645 |
| 54 | Costilla County | 634 |
| 55 | Baca County | 605 |
| 56 | Dolores County | 519 |
| 57 | Sedgwick County | 392 |
| 58 | Crowley County | 389 |
| 59 | Mineral County | 377 |
| 60 | Hinsdale County | 348 |
| 61 | Jackson County | 294 |
| 62 | Cheyenne County | 255 |
| 63 | San Juan County | 234 |
| 64 | Kiowa County | 189 |