Cal. Gov't Code § 28020
The population of the counties of this state is hereby ascertained and determined to be and is as follows:
| 1 Los Angeles | 7,032,075 |
| 2 Orange | 1,420,386 |
| 3 San Diego | 1,357,854 |
| 4 Alameda | 1,073,184 |
| 5 Santa Clara | 1,064,714 |
| 6 San Francisco | 715,674 |
| 7 San Bernardino | 684,072 |
| 8 Sacramento | 631,498 |
| 9 Contra Costa | 558,389 |
| 10 San Mateo | 556,234 |
| 11 Riverside | 459,074 |
| 12 Fresno | 413,053 |
| 13 Ventura | 376,430 |
| 14 Kern | 329,162 |
| 15 San Joaquin | 290,208 |
| 16 Santa Barbara | 264,324 |
| 17 Monterey | 250,071 |
| 18 Marin | 206,038 |
| 19 Sonoma | 204,885 |
| 20 Stanislaus | 194,506 |
| 21 Tulare | 188,322 |
| 22 Solano | 169,941 |
| 23 Santa Cruz | 123,790 |
| 24 San Luis Obispo | 105,690 |
| 25 Merced | 104,629 |
| 26 Butte | 101,969 |
| 27 Humboldt | 99,692 |
| 28 Yolo | 91,788 |
| 29 Napa | 79,140 |
| 30 Shasta | 77,640 |
| 31 Placer | 77,306 |
| 32 Imperial | 74,492 |
| 33 Kings | 64,610 |
| 34 Mendocino | 51,101 |
| 35 Yuba | 44,736 |
| 36 El Dorado | 43,833 |
| 37 Sutter | 41,935 |
| 38 Madera | 41,519 |
| 39 Siskiyou | 33,225 |
| 40 Tehama | 29,517 |
| 41 Nevada | 26,346 |
| 42 Tuolumne | 22,169 |
| 43 Lake | 19,548 |
| 44 San Benito | 18,226 |
| 45 Glenn | 17,521 |
| 46 Inyo | 15,571 |
| 47 Lassen | 14,960 |
| 48 Del Norte | 14,580 |
| 49 Calaveras | 13,585 |
| 50 Colusa | 12,430 |
| 51 Amador | 11,821 |
| 52 Plumas | 11,707 |
| 53 Trinity | 7,615 |
| 54 Modoc | 7,469 |
| 55 Mariposa | 6,015 |
| 56 Mono | 4,016 |
| 57 Sierra | 2,365 |
| 58 Alpine | 484 |