| County | Candidate | Party | Votes | Vote share | Expected state votes counted (%) |
|---|---|---|---|---|---|
| Alameda | Adam Schiff wins | Democratic | 489,039 | 76.8% | 96.7% |
| Alameda | Steve Garvey | Republican | 147,721 | 23.2% | 96.7% |
| Alpine | Adam Schiff wins | Democratic | 463 | 63.9% | 96.7% |
| Alpine | Steve Garvey | Republican | 262 | 36.1% | 96.7% |
| Amador | Steve Garvey | Republican | 14,534 | 66.1% | 96.7% |
| Amador | Adam Schiff wins | Democratic | 7,454 | 33.9% | 96.7% |
| Butte | Steve Garvey | Republican | 49,192 | 53.7% | 96.7% |
| Butte | Adam Schiff wins | Democratic | 42,417 | 46.3% | 96.7% |
| Calaveras | Steve Garvey | Republican | 17,109 | 65.6% | 96.7% |
| Calaveras | Adam Schiff wins | Democratic | 8,956 | 34.4% | 96.7% |
| Colusa | Steve Garvey | Republican | 4,471 | 64.7% | 96.7% |
| Colusa | Adam Schiff wins | Democratic | 2,436 | 35.3% | 96.7% |
| Contra Costa | Adam Schiff wins | Democratic | 343,169 | 67.5% | 96.7% |
| Contra Costa | Steve Garvey | Republican | 165,245 | 32.5% | 96.7% |
| Del Norte | Steve Garvey | Republican | 6,084 | 59.1% | 96.7% |
| Del Norte | Adam Schiff wins | Democratic | 4,217 | 40.9% | 96.7% |
| El Dorado | Steve Garvey | Republican | 64,663 | 58.6% | 96.7% |
| El Dorado | Adam Schiff wins | Democratic | 45,734 | 41.4% | 96.7% |
| Fresno | Steve Garvey | Republican | 166,675 | 52.9% | 96.7% |
| Fresno | Adam Schiff wins | Democratic | 148,396 | 47.1% | 96.7% |
| Glenn | Steve Garvey | Republican | 7,114 | 69.5% | 96.7% |
| Glenn | Adam Schiff wins | Democratic | 3,122 | 30.5% | 96.7% |
| Humboldt | Adam Schiff wins | Democratic | 40,240 | 63.8% | 96.7% |
| Humboldt | Steve Garvey | Republican | 22,793 | 36.2% | 96.7% |
| Imperial | Steve Garvey | Republican | 26,579 | 50.1% | 96.7% |
| Imperial | Adam Schiff wins | Democratic | 26,441 | 49.9% | 96.7% |
| Inyo | Steve Garvey | Republican | 4,673 | 53.1% | 96.7% |
| Inyo | Adam Schiff wins | Democratic | 4,134 | 46.9% | 96.7% |
| Kern | Steve Garvey | Republican | 168,458 | 61.0% | 96.7% |
| Kern | Adam Schiff wins | Democratic | 107,501 | 39.0% | 96.7% |
| Kings | Steve Garvey | Republican | 25,354 | 62.5% | 96.7% |
| Kings | Adam Schiff wins | Democratic | 15,225 | 37.5% | 96.7% |
| Lake | Steve Garvey | Republican | 13,401 | 51.2% | 96.7% |
| Lake | Adam Schiff wins | Democratic | 12,797 | 48.8% | 96.7% |
| Lassen | Steve Garvey | Republican | 8,691 | 78.1% | 96.7% |
| Lassen | Adam Schiff wins | Democratic | 2,439 | 21.9% | 96.7% |
| Los Angeles | Adam Schiff wins | Democratic | 2,335,222 | 65.7% | 96.7% |
| Los Angeles | Steve Garvey | Republican | 1,220,750 | 34.3% | 96.7% |
| Madera | Steve Garvey | Republican | 32,451 | 61.2% | 96.7% |
| Madera | Adam Schiff wins | Democratic | 20,538 | 38.8% | 96.7% |
| Marin | Adam Schiff wins | Democratic | 112,842 | 79.8% | 96.7% |
| Marin | Steve Garvey | Republican | 28,490 | 20.2% | 96.7% |
| Mariposa | Steve Garvey | Republican | 5,747 | 61.6% | 96.7% |
| Mariposa | Adam Schiff wins | Democratic | 3,582 | 38.4% | 96.7% |
| Mendocino | Adam Schiff wins | Democratic | 24,106 | 63.0% | 96.7% |
| Mendocino | Steve Garvey | Republican | 14,182 | 37.0% | 96.7% |
| Merced | Steve Garvey | Republican | 43,320 | 51.7% | 96.7% |
| Merced | Adam Schiff wins | Democratic | 40,394 | 48.3% | 96.7% |
| Modoc | Steve Garvey | Republican | 2,951 | 75.1% | 96.7% |
| Modoc | Adam Schiff wins | Democratic | 978 | 24.9% | 96.7% |
| Mono | Adam Schiff wins | Democratic | 3,384 | 57.5% | 96.7% |
| Mono | Steve Garvey | Republican | 2,503 | 42.5% | 96.7% |
| Monterey | Adam Schiff wins | Democratic | 92,302 | 64.0% | 96.7% |
| Monterey | Steve Garvey | Republican | 51,913 | 36.0% | 96.7% |
| Napa | Adam Schiff wins | Democratic | 42,245 | 65.8% | 96.7% |
| Napa | Steve Garvey | Republican | 21,986 | 34.2% | 96.7% |
| Nevada | Adam Schiff wins | Democratic | 33,363 | 54.4% | 96.7% |
| Nevada | Steve Garvey | Republican | 27,987 | 45.6% | 96.7% |
| Orange | Steve Garvey | Republican | 688,967 | 50.5% | 96.7% |
| Orange | Adam Schiff wins | Democratic | 674,882 | 49.5% | 96.7% |
| Placer | Steve Garvey | Republican | 129,981 | 57.0% | 96.7% |
| Placer | Adam Schiff wins | Democratic | 98,198 | 43.0% | 96.7% |
| Plumas | Steve Garvey | Republican | 6,034 | 60.6% | 96.7% |
| Plumas | Adam Schiff wins | Democratic | 3,921 | 39.4% | 96.7% |
| Riverside | Steve Garvey | Republican | 474,241 | 51.7% | 96.7% |
| Riverside | Adam Schiff wins | Democratic | 443,181 | 48.3% | 96.7% |
| Sacramento | Adam Schiff wins | Democratic | 375,265 | 58.7% | 96.7% |
| Sacramento | Steve Garvey | Republican | 263,954 | 41.3% | 96.7% |
| San Benito | Adam Schiff wins | Democratic | 14,991 | 55.5% | 96.7% |
| San Benito | Steve Garvey | Republican | 12,031 | 44.5% | 96.7% |
| San Bernardino | Steve Garvey | Republican | 384,091 | 51.9% | 96.7% |
| San Bernardino | Adam Schiff wins | Democratic | 355,667 | 48.1% | 96.7% |
| San Diego | Adam Schiff wins | Democratic | 817,805 | 56.7% | 96.7% |
| San Diego | Steve Garvey | Republican | 625,129 | 43.3% | 96.7% |
| San Francisco | Adam Schiff wins | Democratic | 310,932 | 82.4% | 96.7% |
| San Francisco | Steve Garvey | Republican | 66,421 | 17.6% | 96.7% |
| San Joaquin | Steve Garvey | Republican | 129,064 | 50.4% | 96.7% |
| San Joaquin | Adam Schiff wins | Democratic | 127,205 | 49.6% | 96.7% |
| San Luis Obispo | Adam Schiff wins | Democratic | 77,525 | 53.1% | 96.7% |
| San Luis Obispo | Steve Garvey | Republican | 68,569 | 46.9% | 96.7% |
| San Mateo | Adam Schiff wins | Democratic | 237,186 | 73.7% | 96.7% |
| San Mateo | Steve Garvey | Republican | 84,474 | 26.3% | 96.7% |
| Santa Barbara | Adam Schiff wins | Democratic | 110,609 | 61.2% | 96.7% |
| Santa Barbara | Steve Garvey | Republican | 70,126 | 38.8% | 96.7% |
| Santa Clara | Adam Schiff wins | Democratic | 498,785 | 69.0% | 96.7% |
| Santa Clara | Steve Garvey | Republican | 224,597 | 31.0% | 96.7% |
| Santa Cruz | Adam Schiff wins | Democratic | 98,631 | 76.2% | 96.7% |
| Santa Cruz | Steve Garvey | Republican | 30,737 | 23.8% | 96.7% |
| Shasta | Steve Garvey | Republican | 61,402 | 70.3% | 96.7% |
| Shasta | Adam Schiff wins | Democratic | 25,996 | 29.7% | 96.7% |
| Sierra | Steve Garvey | Republican | 1,110 | 64.3% | 96.7% |
| Sierra | Adam Schiff wins | Democratic | 617 | 35.7% | 96.7% |
| Siskiyou | Steve Garvey | Republican | 12,958 | 61.6% | 96.7% |
| Siskiyou | Adam Schiff wins | Democratic | 8,087 | 38.4% | 96.7% |
| Solano | Adam Schiff wins | Democratic | 113,204 | 61.0% | 96.7% |
| Solano | Steve Garvey | Republican | 72,404 | 39.0% | 96.7% |
| Sonoma | Adam Schiff wins | Democratic | 176,477 | 72.0% | 96.7% |
| Sonoma | Steve Garvey | Republican | 68,712 | 28.0% | 96.7% |
| Stanislaus | Steve Garvey | Republican | 106,444 | 55.3% | 96.7% |
| Stanislaus | Adam Schiff wins | Democratic | 86,040 | 44.7% | 96.7% |
| Sutter | Steve Garvey | Republican | 25,129 | 65.9% | 96.7% |
| Sutter | Adam Schiff wins | Democratic | 12,984 | 34.1% | 96.7% |
| Tehama | Steve Garvey | Republican | 18,632 | 72.4% | 96.7% |
| Tehama | Adam Schiff wins | Democratic | 7,098 | 27.6% | 96.7% |
| Trinity | Steve Garvey | Republican | 3,148 | 56.6% | 96.7% |
| Trinity | Adam Schiff wins | Democratic | 2,413 | 43.4% | 96.7% |
| Tulare | Steve Garvey | Republican | 83,439 | 61.6% | 96.7% |
| Tulare | Adam Schiff wins | Democratic | 51,972 | 38.4% | 96.7% |
| Tuolumne | Steve Garvey | Republican | 17,372 | 62.4% | 96.7% |
| Tuolumne | Adam Schiff wins | Democratic | 10,479 | 37.6% | 96.7% |
| Ventura | Adam Schiff wins | Democratic | 211,381 | 55.5% | 96.7% |
| Ventura | Steve Garvey | Republican | 169,660 | 44.5% | 96.7% |
| Yolo | Adam Schiff wins | Democratic | 61,084 | 67.2% | 96.7% |
| Yolo | Steve Garvey | Republican | 29,758 | 32.8% | 96.7% |
| Yuba | Steve Garvey | Republican | 18,711 | 64.1% | 96.7% |
| Yuba | Adam Schiff wins | Democratic | 10,501 | 35.9% | 96.7% |