| County Population Centroids for California |
| ST | COU | COUNTY NAME | POPULATION | LATITUDE | LONGITUDE |
| 06 | 001 | Alameda | 1443741 | 37.705798 | -122.10549 |
| 06 | 003 | Alpine | 1,208 | 38.721301 | -119.85509 |
| 06 | 005 | Amador | 35,100 | 38.398264 | -120.76562 |
| 06 | 007 | Butte | 203,171 | 39.669931 | -121.70499 |
| 06 | 009 | Calaveras | 40,554 | 38.176349 | -120.61588 |
| 06 | 011 | Colusa | 18,804 | 39.162596 | -122.08706 |
| 06 | 013 | Contra Costa | 948,816 | 37.939255 | -122.04927 |
| 06 | 015 | Del Norte | 27,507 | 41.795554 | -124.16068 |
| 06 | 017 | El Dorado | 156,299 | 38.759997 | -120.68462 |
| 06 | 019 | Fresno | 799,407 | 36.736003 | -119.77232 |
| 06 | 021 | Glenn | 26,453 | 39.656536 | -122.17591 |
| 06 | 023 | Humboldt | 126,518 | 40.756735 | -124.08735 |
| 06 | 025 | Imperial | 142,361 | 32.845927 | -115.52380 |
| 06 | 027 | Inyo | 17,945 | 37.162680 | -118.27464 |
| 06 | 029 | Kern | 661,645 | 35.372878 | -118.91673 |
| 06 | 031 | Kings | 129,461 | 36.237786 | -119.73393 |
| 06 | 033 | Lake | 58,309 | 38.977625 | -122.74056 |
| 06 | 035 | Lassen | 33,828 | 40.477505 | -120.55382 |
| 06 | 037 | Los Angeles | 9519338 | 34.057700 | -118.24094 |
| 06 | 039 | Madera | 123,109 | 37.049213 | -119.99704 |
| 06 | 041 | Marin | 247,289 | 37.986065 | -122.54829 |
| 06 | 043 | Mariposa | 17,130 | 37.542289 | -119.93733 |
| 06 | 045 | Mendocino | 86,265 | 39.283755 | -123.39694 |
| 06 | 047 | Merced | 210,554 | 37.282628 | -120.62256 |
| 06 | 049 | Modoc | 9,449 | 41.534943 | -120.64988 |
| 06 | 051 | Mono | 12,853 | 37.787472 | -118.98948 |
| 06 | 053 | Monterey | 401,762 | 36.621275 | -121.66660 |
| 06 | 055 | Napa | 124,279 | 38.343727 | -122.32937 |
| 06 | 057 | Nevada | 92,033 | 39.217391 | -120.92759 |
| 06 | 059 | Orange | 2846289 | 33.736492 | -117.86772 |
| 06 | 061 | Placer | 248,399 | 38.853980 | -121.13647 |
| 06 | 063 | Plumas | 20,824 | 39.994672 | -120.84350 |
| 06 | 065 | Riverside | 1545387 | 33.811806 | -117.05238 |
| 06 | 067 | Sacramento | 1223499 | 38.575331 | -121.37938 |
| 06 | 069 | San Benito | 53,234 | 36.843372 | -121.40134 |
| 06 | 071 | San Bernardino | 1709434 | 34.180761 | -117.35110 |
| 06 | 073 | San Diego | 2813833 | 32.882077 | -117.11363 |
| 06 | 075 | San Francisco | 776,733 | 37.759376 | -122.43940 |
| 06 | 077 | San Joaquin | 563,598 | 37.944264 | -121.29141 |
| 06 | 079 | San Luis Obispo | 246,681 | 35.339069 | -120.67311 |
| 06 | 081 | San Mateo | 707,161 | 37.563460 | -122.34129 |
| 06 | 083 | Santa Barbara | 399,347 | 34.622048 | -120.07063 |
| 06 | 085 | Santa Clara | 1682585 | 37.315160 | -121.91108 |
| 06 | 087 | Santa Cruz | 255,602 | 36.987764 | -121.93911 |
| 06 | 089 | Shasta | 163,256 | 40.584124 | -122.29273 |
| 06 | 091 | Sierra | 3,555 | 39.613307 | -120.42045 |
| 06 | 093 | Siskiyou | 44,301 | 41.570696 | -122.48738 |
| 06 | 095 | Solano | 394,542 | 38.232890 | -122.07410 |
| 06 | 097 | Sonoma | 458,614 | 38.412820 | -122.72102 |
| 06 | 099 | Stanislaus | 446,997 | 37.624170 | -120.95952 |
| 06 | 101 | Sutter | 78,930 | 39.132716 | -121.64389 |
| 06 | 103 | Tehama | 56,039 | 40.108117 | -122.21636 |
| 06 | 105 | Trinity | 13,022 | 40.686135 | -123.06026 |
| 06 | 107 | Tulare | 368,021 | 36.248899 | -119.22579 |
| 06 | 109 | Tuolumne | 54,501 | 37.974786 | -120.32670 |
| 06 | 111 | Ventura | 753,197 | 34.242977 | -119.02623 |
| 06 | 113 | Yolo | 168,660 | 38.602556 | -121.73373 |
| 06 | 115 | Yuba | 60,219 | 39.151949 | -121.49294 |
