Counties in California by gini index

Alpine County had the highest gini index of 58 counties in 2022, at 57.3 index. San Benito County had the lowest, at 40.7 index. The median was 46 index and the figure for California was 49 index. Source: the U.S. Census Bureau.

Highest57.3Alpine County
Median4658 counties
California49History

All counties, 2022

CSVChart (SVG)

Alpine CountyAlpine County: 57.3 index57.3San Francisco CountySan Francisco County: 51.7 index51.7Marin CountyMarin County: 51.6 index51.6Trinity CountyTrinity County: 51.1 index51.1Tehama CountyTehama County: 50.6 index50.6Los Angeles CountyLos Angeles County: 49.8 index49.8San Mateo CountySan Mateo County: 49.3 index49.3Siskiyou CountySiskiyou County: 49.1 index49.1Lake CountyLake County: 49 index49Santa Barbara CountySanta Barbara County: 48.9 index48.9Yolo CountyYolo County: 48.9 index48.9Butte CountyButte County: 48.3 index48.3Santa Cruz CountySanta Cruz County: 48.2 index48.2Humboldt CountyHumboldt County: 48.1 index48.1Mendocino CountyMendocino County: 48.1 index48.1El Dorado CountyEl Dorado County: 48 index48Sierra CountySierra County: 47.9 index47.9Napa CountyNapa County: 47.6 index47.6Santa Clara CountySanta Clara County: 47.4 index47.4Fresno CountyFresno County: 47.3 index47.3Nevada CountyNevada County: 47.3 index47.3San Luis Obispo CountySan Luis Obispo County: 47.2 index47.2Contra Costa CountyContra Costa County: 47.1 index47.1Plumas CountyPlumas County: 47 index47Kern CountyKern County: 47 index47Alameda CountyAlameda County: 46.9 index46.9Orange CountyOrange County: 46.8 index46.8Colusa CountyColusa County: 46.2 index46.2Sutter CountySutter County: 46.1 index46.1San Diego CountySan Diego County: 46 index46Shasta CountyShasta County: 46 index46Monterey CountyMonterey County: 46 index46Imperial CountyImperial County: 45.9 index45.9Sonoma CountySonoma County: 45.9 index45.9Merced CountyMerced County: 45.8 index45.8Amador CountyAmador County: 45.7 index45.7Madera CountyMadera County: 45.4 index45.4Tuolumne CountyTuolumne County: 45.3 index45.3Tulare CountyTulare County: 45.2 index45.2Ventura CountyVentura County: 45 index45Inyo CountyInyo County: 44.9 index44.9Riverside CountyRiverside County: 44.8 index44.8Placer CountyPlacer County: 44.5 index44.5Sacramento CountySacramento County: 44.4 index44.4San Joaquin CountySan Joaquin County: 44.3 index44.3Stanislaus CountyStanislaus County: 44.2 index44.2San Bernardino CountySan Bernardino County: 43.9 index43.9Yuba CountyYuba County: 43.8 index43.8Mariposa CountyMariposa County: 43.7 index43.7Del Norte CountyDel Norte County: 43.2 index43.2Calaveras CountyCalaveras County: 42.8 index42.8Solano CountySolano County: 42.1 index42.1Lassen CountyLassen County: 41.8 index41.8Glenn CountyGlenn County: 41.4 index41.4Kings CountyKings County: 41.3 index41.3Mono CountyMono County: 40.9 index40.9Modoc CountyModoc County: 40.7 index40.7San Benito CountySan Benito County: 40.7 index40.7
index. Source: U.S. Census Bureau. Retrieved 2026-10-10.

Full ranking

RankCounties2022
index
Change on 2021
1Alpine County57.3+14.4
2San Francisco County51.7+0.5
3Marin County51.6+0.6
4Trinity County51.1+1.6
5Tehama County50.6-0.9
6Los Angeles County49.8+0.1
7San Mateo County49.3+0.4
8Siskiyou County49.1+2.6
9Lake County49-1.2
10Santa Barbara County48.9+0.5
11Yolo County48.9-0.3
12Butte County48.3-0.5
13Santa Cruz County48.2+1
14Humboldt County48.1-0.4
15Mendocino County48.1+1.2
16El Dorado County48+0.8
17Sierra County47.9+2.5
18Napa County47.6-0.1
19Santa Clara County47.4+0.7
20Fresno County47.3-0.1
21Nevada County47.3-0.2
22San Luis Obispo County47.2+2.1
23Contra Costa County47.1+0.3
24Plumas County47+0.6
25Kern County47+0.5
26Alameda County46.9+0.6
27Orange County46.8+0.2
28Colusa County46.2-0.7
29Sutter County46.1+0.4
30San Diego County46-0.1
31Shasta County46-0.6
32Monterey County46+0.7
33Imperial County45.9+0.1
34Sonoma County45.9+0.5
35Merced County45.8-0.6
36Amador County45.7+0.3
37Madera County45.4+1.5
38Tuolumne County45.3+0.3
39Tulare County45.2-0.6
40Ventura County45+0.2
41Inyo County44.9+0.6
42Riverside County44.8-0.5
43Placer County44.5+0.5
44Sacramento County44.4-0.1
45San Joaquin County44.3-0.3
46Stanislaus County44.2+0.2
47San Bernardino County43.90
48Yuba County43.8+0.6
49Mariposa County43.70
50Del Norte County43.2-1.2
51Calaveras County42.8-0.5
52Solano County42.1+0.3
53Lassen County41.8+1.4
54Glenn County41.4-1.2
55Kings County41.3+0.2
56Mono County40.9+1.7
57Modoc County40.7-0.2
58San Benito County40.7-0.1

Other periods

About this ranking

Income inequality on a 0 to 100 scale, where 0 is perfect equality.

Eurostat, equivalised disposable income after social transfers (EU-SILC), for the EU and its countries. For other countries use gini_index_world_bank, which is measured on a different basis. For the United States, ACS five-year estimate B19083 measures inequality in household money income before taxes. Census publishes a coefficient from 0 to 1; Invokely multiplies it by 100. The displayed year is the final year of the five-year period. Negative household incomes are treated as zero. This differs from the EU-SILC measure based on equivalised disposable income and should not be treated as directly comparable.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B19083: Gini index of household income inequality (coefficient multiplied by 100). https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b19083.dat. Retrieved 2026-10-10.

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Questions

Which county has the highest gini index?

Alpine County, with 57.3 index in 2022, according to the U.S. Census Bureau.

Which county has the lowest gini index?

San Benito County, with 40.7 index in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B19083: Gini index of household income inequality (coefficient multiplied by 100). Retrieved 2026-10-10.

Gini index: other rankings

Counties in California: more rankings