Square Mileage by County
San Bernardino County
20,057
Inyo County
10,181
Kern County
8,132
Riverside County
7,206
Siskiyou County
6,278
Fresno County
5,958
Tulare County
4,824
Lassen County
4,541
San Diego County
4,207
Imperial County
4,177
Los Angeles County
4,058
Modoc County
3,918
Shasta County
3,775
Humboldt County
3,568
Mendocino County
3,506
Monterey County
3,381
San Luis Obispo County
3,299
Trinity County
3,179
Mono County
3,049
Tehama County
2,950
Santa Barbara County
2,735
Plumas County
2,553
Tuolumne County
2,221
Madera County
2,137
Merced County
1,935
Ventura County
1,843
El Dorado County
1,708
Butte County
1,636
Sonoma County
1,576
Stanislaus County
1,495
Mariposa County
1,449
Placer County
1,407
San Joaquin County
1,391
Kings County
1,389
San Benito County
1,389
Glenn County
1,314
Santa Clara County
1,290
Lake County
1,256
Colusa County
1,151
Calaveras County
1,020
Yolo County
1,015
Del Norte County
1,006
Sacramento County
965
Nevada County
958
Sierra County
953
Solano County
822
Orange County
791
Napa County
748
Alameda County
739
Alpine County
738
Contra Costa County
716
Yuba County
632
Sutter County
602
Amador County
595
Marin County
520
San Mateo County
448
Santa Cruz County
445
San Francisco County
47
