The graph below ranks each California County by Average income according to the 2012 census estimates.
California Average Income by county
| County | Average Income |
| Marin |  $55,695 |
| San Francisco | $47,278 |
| San Mateo | $45,458 |
| Santa Clara | $41,041 |
| Contra Costa | $38,106 |
| Alameda | $35,434 |
| Napa | $35,195 |
| Placer | $34,917 |
| El Dorado | $34,571 |
| Orange | $34,233 |
| Sonoma | $32,898 |
| Santa Cruz | $32,846 |
| Ventura | $32,826 |
| Nevada | $31,899 |
| San Diego | $30,683 |
| San Luis Obispo | $30,218 |
| Santa Barbara | $30,114 |
| Solano | $29,170 |
| Calaveras | $28,892 |
| Plumas | $28,329 |
| Yolo | $28,137 |
| Los Angeles | $27,900 |
| Mariposa | $27,670 |
| Inyo | $27,323 |
| Alpine | $27,135 |
| Mono | $27,135 |
| Amador | $26,969 |
| Sacramento | $26,856 |
| Tuolumne | $26,043 |
| San Benito | $25,791 |
| Monterey | $24,995 |
| Sierra | $24,121 |
| Humboldt | $23,884 |
| Riverside | $23,863 |
| Shasta | $23,639 |
| Butte | $23,556 |
| Mendocino | $23,179 |
| Trinity | $23,014 |
| Sutter | $22,816 |
| San Joaquin | $22,696 |
| Siskiyou | $22,304 |
| Lake | $21,845 |
| Stanislaus | $21,785 |
| Glenn | $21,689 |
| San Bernardino | $21,636 |
| Colusa | $21,601 |
| Modoc | $20,916 |
| Fresno | $20,391 |
| Tehama | $20,259 |
| Kern | $20,216 |
| Del Norte | $20,197 |
| Yuba | $20,016 |
| Lassen | $19,924 |
| Kings | $18,566 |
| Madera | $18,474 |
| Merced | $18,343 |
| Tulare | $18,021 |
| Imperial | $16,667 |