Ranking of California Counties By Percentage of Population with British Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 218.90K people in California with British ancestry (0.56% of California population). Among all California counties, Alpine County had the highest percentage of its population with British ancestry (2.16%), followed by Marin County (1.59%), and Inyo County (1.39%).
The chart and table below shows the top 10 counties with high percentage of its population having British ancestry.
You can see similar information for other states and for other ancestry groups in California.
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Related Topics: California ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of California Counties By Percentage of Population with British Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Alpine County | 2.16 |
| 2 | Marin County | 1.59 |
| 3 | Inyo County | 1.39 |
| 4 | El Dorado County | 1.29 |
| 5 | Santa Cruz County | 1.26 |
| 6 | Nevada County | 1.11 |
| 7 | Tuolumne County | 1.06 |
| 8 | Modoc County | 1.02 |
| 8 | Sonoma County | 1.02 |
| 9 | Santa Barbara County | 1.00 |
| 10 | Placer County | 0.98 |
| 11 | Mariposa County | 0.97 |
| 12 | San Francisco County | 0.90 |
| 13 | Yuba County | 0.89 |
| 14 | San Luis Obispo County | 0.85 |
| 14 | Tehama County | 0.85 |
| 15 | Napa County | 0.83 |
| 16 | Calaveras County | 0.81 |
| 16 | Shasta County | 0.81 |
| 17 | San Mateo County | 0.78 |
| 18 | Humboldt County | 0.77 |
| 19 | Amador County | 0.75 |
| 20 | Alameda County | 0.72 |
| 21 | Contra Costa County | 0.71 |
| 22 | San Diego County | 0.70 |
| 23 | Butte County | 0.65 |
| 24 | Ventura County | 0.64 |
| 25 | Orange County | 0.62 |
| 26 | Santa Clara County | 0.60 |
| 27 | Sutter County | 0.57 |
| 28 | Yolo County | 0.56 |
| 29 | Solano County | 0.55 |
| 30 | Sacramento County | 0.54 |
| 31 | Mendocino County | 0.53 |
| 32 | Siskiyou County | 0.51 |
| 33 | Plumas County | 0.44 |
| 33 | Riverside County | 0.44 |
| 34 | Los Angeles County | 0.43 |
| 35 | Del Norte County | 0.41 |
| 35 | Monterey County | 0.41 |
| 36 | Lassen County | 0.37 |
| 36 | Stanislaus County | 0.37 |
| 37 | San Benito County | 0.36 |
| 38 | Fresno County | 0.35 |
| 39 | San Bernardino County | 0.33 |
| 40 | Glenn County | 0.31 |
| 40 | Kern County | 0.31 |
| 41 | Colusa County | 0.30 |
| 42 | Lake County | 0.28 |
| 42 | Tulare County | 0.28 |
| 43 | Madera County | 0.26 |
| 44 | San Joaquin County | 0.24 |
| 45 | Merced County | 0.23 |
| 46 | Trinity County | 0.19 |
| 47 | Kings County | 0.13 |
| 47 | Mono County | 0.13 |
| 48 | Imperial County | 0.11 |