List of California Counties by Human Development Index
This list ranks all 58 counties in California by their Human Development Index (HDI), a composite measure of income, education, and life expectancy. The highest HDI counties are Marin (0.974), Santa Clara (0.967), San Mateo (0.966), and San Francisco (0.965), all in the Bay Area, reflecting the region's concentration of wealth, education, and health resources. At the other end, Tulare County (0.888), Imperial County (0.889), and Del Norte and Kern County (both 0.892) rank lowest, representing largely rural and agricultural counties. Mono County (0.965) is now included in the ranking with corrected data. Overall, the list highlights the HDI gap between urban coastal counties and rural inland regions..[1][2][3]
List
| Rank | County | HDI |
|---|---|---|
| Very High Human Development | ||
| 1 | Marin | 0.974 |
| 2 | Santa Clara | 0.967 |
| 3 | San Mateo | 0.966 |
| 4 | San Francisco | 0.965 |
| 5 | Mono | 0.965 |
| 6 | Alameda | 0.955 |
| 7 | Santa Cruz | 0.951 |
| 8 | Contra Costa | 0.950 |
| 9 | Orange | 0.950 |
| 10 | Placer | 0.949 |
| 11 | Yolo | 0.946 |
| 12 | El Dorado | 0.945 |
| 13 | San Diego | 0.945 |
| 14 | San Luis Obispo | 0.945 |
| 15 | Amador | 0.945 |
| 16 | Sonoma | 0.945 |
| 17 | Ventura | 0.944 |
| 18 | Napa | 0.944 |
| 19 | Calaveras | 0.943 |
| 20 | Mariposa | 0.943 |
| 21 | Sierra | 0.942 |
| 22 | Santa Barbara | 0.940 |
| California | 0.940 | |
| 23 | Nevada | 0.936 |
| 24 | Los Angeles | 0.936 |
| 25 | Monterey | 0.936 |
| 26 | Butte | 0.935 |
| 27 | San Benito | 0.933 |
| 28 | Solano | 0.932 |
| 29 | Colusa | 0.929 |
| 30 | Riverside | 0.927 |
| 31 | Alpine | 0.926 |
| 32 | Plumas | 0.926 |
| 33 | Sacramento | 0.925 |
| 34 | Inyo | 0.920 |
| 35 | Mendocino | 0.917 |
| 36 | Humboldt | 0.916 |
| 37 | Tuolumne | 0.913 |
| 38 | Modoc | 0.912 |
| 39 | Sutter | 0.911 |
| 40 | Tehama | 0.908 |
| 41 | San Joaquin | 0.906 |
| 42 | Trinity | 0.904 |
| 43 | San Bernardino | 0.904 |
| 44 | Shasta | 0.903 |
| 45 | Stanislaus | 0.902 |
| 46 | Fresno | 0.902 |
| 47 | Siskiyou | 0.901 |
| 48 | Lassen | 0.900 |
| 49 | Glenn | 0.898 |
| 50 | Lake | 0.897 |
| 51 | Kings | 0.897 |
| 52 | Yuba | 0.897 |
| 53 | Madera | 0.895 |
| 54 | Merced | 0.893 |
| 55 | Kern | 0.892 |
| 56 | Del Norte | 0.892 |
| 57 | Imperial | 0.889 |
| 58 | Tulare | 0.888 |
References
- ↑ "California Human Development Reports". Insightorium. August 11, 2025. Retrieved August 12, 2025.
- ↑ "Education Index Report". Globaldata Lab. Retrieved August 12, 2025.
- ↑ "California Counties by Education Attainment". StatisticalAtlas. Retrieved August 12, 2025.
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