California Citizen Voting-age Population By County in 2012 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2012, the citizen voting-age population for California was 23,072,670 and represented 61.82% of the total California population.
Among all California counties, Los Angeles had the highest citizen voting-age population (5.71M), followed by San Diego (2.03M), and Orange (1.86M).
In terms of percentages, Mariposa had the highest percentage of its population being citizens of voting-age (80.96%), followed by Amador (80.70%), and Tuolumne (80.36%).
The chart and table below shows the citizen voting-age population of each county and the percentage of each county's population that were citizens of voting-age.
You can see similar information for other states and by state for the United States.
| County | Citizen Voting-age Population | % of County Population |
|---|---|---|
| Los Angeles | 5713775 | 58.07 |
| San Diego | 2033460 | 65.58 |
| Orange | 1859565 | 61.54 |
| Riverside | 1321020 | 60.24 |
| San Bernardino | 1221670 | 59.86 |
| Santa Clara | 1068915 | 59.77 |
| Alameda | 970755 | 64.07 |
| Sacramento | 938540 | 65.99 |
| Contra Costa | 682915 | 64.91 |
| San Francisco | 593395 | 73.46 |
| Fresno | 530090 | 56.97 |
| Ventura | 516215 | 62.74 |
| Kern | 477950 | 56.96 |
| San Mateo | 457530 | 63.44 |
| San Joaquin | 406210 | 59.13 |
| Sonoma | 333255 | 68.93 |
| Stanislaus | 310185 | 60.22 |
| Solano | 276765 | 66.82 |
| Santa Barbara | 265655 | 62.71 |
| Placer | 250085 | 71.44 |
| Tulare | 233195 | 52.77 |
| Monterey | 223130 | 53.61 |
| San Luis Obispo | 204525 | 75.72 |
| Santa Cruz | 177755 | 67.76 |
| Marin | 176330 | 69.76 |
| Butte | 165830 | 75.34 |
| Merced | 136915 | 53.40 |
| Shasta | 133860 | 75.33 |
| Yolo | 133745 | 66.58 |
| El Dorado | 133260 | 73.85 |
| Humboldt | 103770 | 77.26 |
| Imperial | 92430 | 53.28 |
| Kings | 90385 | 59.47 |
| Napa | 87945 | 64.36 |
| Madera | 85805 | 56.97 |
| Nevada | 77125 | 78.28 |
| Mendocino | 61775 | 70.54 |
| Sutter | 58045 | 61.35 |
| Lake | 47945 | 74.50 |
| Yuba | 46585 | 64.48 |
| Tuolumne | 44360 | 80.36 |
| Tehama | 43965 | 69.57 |
| Calaveras | 35920 | 78.94 |
| Siskiyou | 34180 | 76.51 |
| San Benito | 32530 | 58.65 |
| Amador | 30475 | 80.70 |
| Lassen | 27355 | 78.99 |
| Del Norte | 21335 | 74.87 |
| Glenn | 17420 | 62.04 |
| Plumas | 15845 | 79.52 |
| Mariposa | 14730 | 80.96 |
| Inyo | 13605 | 73.64 |
| Colusa | 11675 | 54.74 |
| Trinity | 10790 | 78.79 |
| Mono | 9660 | 68.12 |
| Modoc | 7110 | 74.49 |
| Sierra | 2515 | 79.46 |
| Alpine | 900 | 75.31 |
