Ranking of Colorado Counties By Population Aged 25 years and above with an Educational attainment of Some College or Associates Degree 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 Some College or Associates Degree was 1,139,275. Among all Colorado counties, El Paso County had the highest population (aged 25 years and above) with an educational attainment of Some College or Associates Degree (166,744), followed by Arapahoe County (124,579), and Jefferson County (116,802).
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 Some College or Associates Degree in 2021
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| Rank | County | Number of People |
|---|---|---|
| 1 | El Paso County | 166744 |
| 2 | Arapahoe County | 124579 |
| 3 | Jefferson County | 116802 |
| 4 | Denver County | 110652 |
| 5 | Adams County | 100759 |
| 6 | Larimer County | 69681 |
| 7 | Weld County | 69389 |
| 8 | Douglas County | 62473 |
| 9 | Boulder County | 47235 |
| 10 | Pueblo County | 43094 |
| 11 | Mesa County | 37707 |
| 12 | Broomfield County | 13147 |
| 13 | Garfield County | 12662 |
| 14 | La Plata County | 11691 |
| 15 | Fremont County | 11607 |
| 16 | Eagle County | 10012 |
| 17 | Montrose County | 9289 |
| 18 | Elbert County | 6982 |
| 19 | Delta County | 6938 |
| 20 | Teller County | 6892 |
| 21 | Morgan County | 5973 |
| 22 | Summit County | 5888 |
| 23 | Montezuma County | 5743 |
| 24 | Routt County | 5540 |
| 25 | Park County | 5439 |
| 26 | Logan County | 4954 |
| 27 | Otero County | 4678 |
| 28 | Las Animas County | 4569 |
| 29 | Chaffee County | 4473 |
| 30 | Archuleta County | 3288 |
| 31 | Alamosa County | 3227 |
| 32 | Grand County | 3144 |
| 33 | Pitkin County | 2897 |
| 34 | Moffat County | 2791 |
| 35 | Prowers County | 2776 |
| 36 | Gunnison County | 2677 |
| 37 | Rio Grande County | 2472 |
| 38 | Yuma County | 2326 |
| 39 | Huerfano County | 2079 |
| 40 | Kit Carson County | 2007 |
| 41 | Clear Creek County | 1801 |
| 42 | Conejos County | 1604 |
| 43 | Ouray County | 1546 |
| 44 | Custer County | 1532 |
| 45 | Lake County | 1519 |
| 46 | Rio Blanco County | 1496 |
| 47 | Saguache County | 1453 |
| 48 | Gilpin County | 1436 |
| 49 | San Miguel County | 1316 |
| 50 | Washington County | 1290 |
| 51 | Crowley County | 1193 |
| 52 | Bent County | 1103 |
| 53 | Lincoln County | 947 |
| 54 | Phillips County | 931 |
| 55 | Costilla County | 865 |
| 56 | Baca County | 837 |
| 57 | Sedgwick County | 700 |
| 58 | Dolores County | 541 |
| 59 | Cheyenne County | 469 |
| 60 | Kiowa County | 463 |
| 61 | Jackson County | 382 |
| 62 | Hinsdale County | 249 |
| 63 | Mineral County | 190 |
| 64 | San Juan County | 136 |