Ranking of California Counties By Population with Welsh Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 150.42K people in California with Welsh ancestry. Among all California counties, Los Angeles County had the highest population with Welsh ancestry (22.47K), followed by San Diego County (15.86K), and Orange County (13.43K).
The chart and table below shows the top 10 counties with high number of people with Welsh 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 Population with Welsh Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Los Angeles County | 22473 |
| 2 | San Diego County | 15856 |
| 3 | Orange County | 13425 |
| 4 | Riverside County | 8801 |
| 5 | Sacramento County | 8434 |
| 6 | Contra Costa County | 6036 |
| 7 | Santa Clara County | 5811 |
| 8 | San Bernardino County | 5522 |
| 9 | Alameda County | 5338 |
| 10 | Ventura County | 4358 |
| 11 | Kern County | 3538 |
| 12 | Sonoma County | 3532 |
| 13 | San Francisco County | 3430 |
| 14 | Placer County | 3392 |
| 15 | San Mateo County | 2697 |
| 16 | Santa Barbara County | 2497 |
| 17 | Fresno County | 2457 |
| 18 | San Luis Obispo County | 2373 |
| 19 | Stanislaus County | 2214 |
| 20 | Santa Cruz County | 2135 |
| 21 | San Joaquin County | 2009 |
| 22 | El Dorado County | 1968 |
| 23 | Marin County | 1777 |
| 24 | Solano County | 1679 |
| 25 | Humboldt County | 1519 |
| 26 | Butte County | 1497 |
| 27 | Shasta County | 1416 |
| 28 | Tulare County | 1324 |
| 29 | Monterey County | 1184 |
| 30 | Merced County | 963 |
| 31 | Yolo County | 881 |
| 32 | Napa County | 837 |
| 33 | Nevada County | 780 |
| 34 | Tuolumne County | 745 |
| 35 | Lake County | 740 |
| 36 | Mendocino County | 646 |
| 37 | Sutter County | 606 |
| 38 | Madera County | 540 |
| 39 | Yuba County | 531 |
| 40 | Calaveras County | 520 |
| 41 | Tehama County | 502 |
| 42 | Kings County | 408 |
| 43 | Inyo County | 374 |
| 44 | Amador County | 323 |
| 45 | Siskiyou County | 302 |
| 46 | San Benito County | 292 |
| 47 | Lassen County | 268 |
| 48 | Trinity County | 236 |
| 49 | Plumas County | 235 |
| 50 | Del Norte County | 225 |
| 51 | Imperial County | 186 |
| 52 | Mariposa County | 177 |
| 53 | Mono County | 141 |
| 54 | Sierra County | 86 |
| 55 | Glenn County | 77 |
| 56 | Modoc County | 59 |
| 57 | Colusa County | 52 |
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