Ranking of California Counties By Population with Czech Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 76.87K people in California with Czech ancestry. Among all California counties, Los Angeles County had the highest population with Czech ancestry (15.55K), followed by San Diego County (8.15K), and Orange County (8.05K).
The chart and table below shows the top 10 counties with high number of people with Czech 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 Czech Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Los Angeles County | 15553 |
| 2 | San Diego County | 8153 |
| 3 | Orange County | 8054 |
| 4 | Riverside County | 4829 |
| 5 | Santa Clara County | 3706 |
| 6 | Alameda County | 3200 |
| 7 | Sacramento County | 2822 |
| 8 | Contra Costa County | 2767 |
| 9 | San Francisco County | 2731 |
| 10 | Ventura County | 2488 |
| 11 | San Mateo County | 2340 |
| 12 | San Bernardino County | 1890 |
| 13 | Fresno County | 1639 |
| 14 | Sonoma County | 1638 |
| 15 | Santa Cruz County | 1337 |
| 16 | Marin County | 1033 |
| 17 | San Luis Obispo County | 1023 |
| 18 | Kern County | 991 |
| 19 | Santa Barbara County | 971 |
| 20 | Placer County | 910 |
| 21 | San Joaquin County | 871 |
| 22 | Monterey County | 841 |
| 23 | Yolo County | 675 |
| 24 | Shasta County | 651 |
| 25 | Butte County | 631 |
| 26 | Solano County | 462 |
| 27 | El Dorado County | 424 |
| 28 | Tulare County | 398 |
| 29 | Napa County | 397 |
| 30 | Stanislaus County | 383 |
| 31 | Humboldt County | 357 |
| 32 | Nevada County | 341 |
| 33 | Sutter County | 258 |
| 34 | Mendocino County | 256 |
| 35 | Madera County | 202 |
| 36 | Tuolumne County | 190 |
| 37 | Plumas County | 173 |
| 38 | Tehama County | 153 |
| 39 | Yuba County | 134 |
| 40 | Kings County | 122 |
| 41 | San Benito County | 104 |
| 42 | Merced County | 102 |
| 43 | Del Norte County | 93 |
| 44 | Lake County | 87 |
| 45 | Siskiyou County | 85 |
| 46 | Mariposa County | 69 |
| 47 | Amador County | 64 |
| 48 | Mono County | 54 |
| 49 | Imperial County | 50 |
| 50 | Trinity County | 32 |
| 51 | Lassen County | 31 |
| 52 | Inyo County | 30 |
| 53 | Glenn County | 27 |
| 54 | Calaveras County | 18 |
| 55 | Modoc County | 10 |
| 55 | Sierra County | 10 |
| 56 | Colusa County | 8 |
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