California Citizen Voting-age Population By County in 2011 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2011, the citizen voting-age population for California was 22,684,535 and represented 61.36% of the total California population.
Among all California counties, Los Angeles had the highest citizen voting-age population (5.61M), followed by San Diego (2.00M), and Orange (1.82M).
In terms of percentages, Amador had the highest percentage of its population being citizens of voting-age (80.61%), followed by Tuolumne (80.01%), and Sierra (79.54%).
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 | 5608565 | 57.30 |
| San Diego | 1998725 | 65.30 |
| Orange | 1823650 | 60.99 |
| Riverside | 1285470 | 59.66 |
| San Bernardino | 1198185 | 59.22 |
| Santa Clara | 1050780 | 59.61 |
| Alameda | 950740 | 63.60 |
| Sacramento | 923800 | 65.59 |
| Contra Costa | 670160 | 64.57 |
| San Francisco | 588610 | 73.76 |
| Fresno | 521915 | 56.69 |
| Ventura | 507680 | 62.24 |
| Kern | 471630 | 56.87 |
| San Mateo | 451850 | 63.50 |
| San Joaquin | 399485 | 58.72 |
| Sonoma | 328500 | 68.65 |
| Stanislaus | 307425 | 59.99 |
| Solano | 273720 | 66.50 |
| Santa Barbara | 263400 | 62.75 |
| Placer | 244575 | 71.19 |
| Tulare | 229515 | 52.61 |
| Monterey | 219515 | 53.36 |
| San Luis Obispo | 202050 | 75.43 |
| Marin | 175520 | 70.02 |
| Santa Cruz | 174540 | 67.29 |
| Butte | 164650 | 75.08 |
| Merced | 135260 | 53.34 |
| Shasta | 132460 | 74.74 |
| El Dorado | 132280 | 73.54 |
| Yolo | 131985 | 66.36 |
| Humboldt | 102980 | 77.09 |
| Imperial | 90790 | 52.99 |
| Kings | 90290 | 59.27 |
| Napa | 87475 | 64.62 |
| Madera | 84775 | 56.66 |
| Nevada | 76475 | 77.73 |
| Mendocino | 61975 | 70.81 |
| Sutter | 57370 | 60.91 |
| Lake | 47635 | 73.98 |
| Yuba | 46085 | 64.17 |
| Tuolumne | 44595 | 80.01 |
| Tehama | 42985 | 68.25 |
| Calaveras | 35810 | 78.20 |
| Siskiyou | 34200 | 76.54 |
| San Benito | 31540 | 57.48 |
| Amador | 30830 | 80.61 |
| Lassen | 27145 | 77.56 |
| Del Norte | 21135 | 74.00 |
| Glenn | 17330 | 61.84 |
| Plumas | 15960 | 79.05 |
| Mariposa | 14430 | 78.90 |
| Inyo | 13485 | 73.07 |
| Colusa | 11690 | 54.90 |
| Trinity | 10890 | 79.43 |
| Mono | 9470 | 67.57 |
| Modoc | 7080 | 73.86 |
| Sierra | 2605 | 79.54 |
| Alpine | 855 | 73.39 |
