Ranking of California Counties By Percentage of 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 percentage of the population of California (aged 25 years and above) who had an educational attainment of Bachelors or Higher was 35.27%. Among all California counties, Marin County had the highest percentage of its population (aged 25 years and above) with an educational attainment of Bachelors or Higher (60.15%), followed by San Francisco County (59.52%), and Santa Clara County (54.39%).
The chart below shows the top 10 California counties, and the table below shows the ranking of all California 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: California ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of California Counties By Percentage of Population (Aged 25yrs+) with an Educational Attainment of Bachelors or Higher in 2021
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| Rank | County | Percentage of Population (Aged 25yrs+) (%) |
|---|---|---|
| 1 | Marin County | 60.15 |
| 2 | San Francisco County | 59.52 |
| 3 | Santa Clara County | 54.39 |
| 4 | San Mateo County | 52.46 |
| 5 | Alameda County | 49.64 |
| 6 | Contra Costa County | 44.06 |
| 7 | Yolo County | 43.07 |
| 8 | Orange County | 42.12 |
| 9 | Santa Cruz County | 41.89 |
| 10 | Placer County | 41.60 |
| 11 | San Diego County | 40.26 |
| 12 | Alpine County | 39.32 |
| 13 | Nevada County | 38.67 |
| 14 | Sonoma County | 37.13 |
| 15 | Napa County | 37.00 |
| 16 | El Dorado County | 36.83 |
| 17 | San Luis Obispo County | 36.74 |
| 18 | Santa Barbara County | 35.14 |
| 19 | Los Angeles County | 34.04 |
| 20 | Ventura County | 34.03 |
| 21 | Sacramento County | 32.00 |
| 22 | Humboldt County | 31.19 |
| 23 | Butte County | 29.76 |
| 24 | Mono County | 29.53 |
| 25 | Mariposa County | 28.87 |
| 26 | Solano County | 27.84 |
| 27 | Inyo County | 27.27 |
| 28 | Monterey County | 26.49 |
| 29 | Tuolumne County | 24.59 |
| 30 | Mendocino County | 24.50 |
| 31 | Riverside County | 23.53 |
| 32 | Plumas County | 23.02 |
| 33 | Fresno County | 22.63 |
| 34 | Shasta County | 22.58 |
| 35 | Sierra County | 22.32 |
| 36 | San Bernardino County | 21.91 |
| 37 | Siskiyou County | 21.52 |
| 38 | San Benito County | 20.53 |
| 39 | Sutter County | 20.00 |
| 40 | Calaveras County | 19.91 |
| 41 | Modoc County | 19.70 |
| 42 | Amador County | 19.52 |
| 43 | San Joaquin County | 19.47 |
| 44 | Trinity County | 18.60 |
| 45 | Stanislaus County | 17.93 |
| 46 | Yuba County | 17.75 |
| 47 | Kern County | 17.61 |
| 48 | Lake County | 17.52 |
| 49 | Tehama County | 16.99 |
| 50 | Madera County | 16.38 |
| 51 | Del Norte County | 16.12 |
| 52 | Imperial County | 15.20 |
| 52 | Tulare County | 15.20 |
| 53 | Glenn County | 14.90 |
| 54 | Colusa County | 14.65 |
| 55 | Kings County | 14.32 |
| 56 | Merced County | 14.06 |
| 57 | Lassen County | 11.77 |
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