Data is updated nightly.
| County | Confirmed | Deaths |
|---|---|---|
| Los Angeles | 143207 | 3943 |
| Riverside | 27371 | 577 |
| Orange | 27031 | 455 |
| San Bernardino | 21468 | 310 |
| San Diego | 21446 | 448 |
| Fresno | 8941 | 91 |
| Alameda | 8478 | 154 |
| Imperial | 8145 | 148 |
| San Joaquin | 7428 | 73 |
| Santa Clara | 6951 | 173 |
| Kern | 6921 | 98 |
| Tulare | 6332 | 153 |
| Sacramento | 6174 | 92 |
| Stanislaus | 5517 | 61 |
| Contra Costa | 5140 | 92 |
| Ventura | 4787 | 56 |
| San Francisco | 4696 | 50 |
| Santa Barbara | 4412 | 32 |
| San Mateo | 4254 | 114 |
| Marin | 3947 | 40 |
| Kings | 3108 | 41 |
| Monterey | 2913 | 18 |
| Solano | 2407 | 31 |
| Merced | 2260 | 15 |
| Sonoma | 1941 | 16 |
| Placer | 1167 | 11 |
| San Luis Obispo | 1112 | 6 |
| Madera | 1054 | 10 |
| Yolo | 1023 | 30 |
| Santa Cruz | 602 | 3 |
| Napa | 561 | 4 |
| Lassen | 444 | 0 |
| Sutter | 441 | 4 |
| Butte | 437 | 4 |
| San Benito | 408 | 2 |
| El Dorado | 363 | 0 |
| Yuba | 221 | 3 |
| Shasta | 215 | 6 |
| Glenn | 190 | 1 |
| Nevada | 185 | 1 |
| Humboldt | 175 | 4 |
| Mendocino | 155 | 0 |
| Colusa | 140 | 0 |
| Lake | 133 | 1 |
| Tehama | 126 | 1 |
| Tuolumne | 80 | 0 |
| Calaveras | 75 | 0 |
| Del Norte | 61 | 0 |
| Mono | 54 | 1 |
| Amador | 48 | 0 |
| Siskiyou | 43 | 0 |
| Inyo | 37 | 1 |
| Mariposa | 34 | 1 |
| Plumas | 21 | 0 |
| Alpine | 2 | 0 |
| Trinity | 2 | 0 |
| Sierra | 1 | 0 |
| Unassigned | 0 | 0 |
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