Counties in California by gini index

Alpine County had the highest gini index of 58 counties in 2023, at 52.8 index. Glenn County had the lowest, at 40 index. The median was 46.4 index and the figure for California was 48.9 index. Source: the U.S. Census Bureau.

Highest52.8Alpine County
Lowest40Glenn County
Median46.458 counties
California48.9History

All counties, 2023

CSVChart (SVG)

Alpine CountyAlpine County: 52.8 index52.8Marin CountyMarin County: 52.3 index52.3San Francisco CountySan Francisco County: 51.8 index51.8Sierra CountySierra County: 50.9 index50.9Tehama CountyTehama County: 50.5 index50.5Trinity CountyTrinity County: 50.4 index50.4Los Angeles CountyLos Angeles County: 49.7 index49.7San Mateo CountySan Mateo County: 49.6 index49.6Santa Barbara CountySanta Barbara County: 49.2 index49.2Lake CountyLake County: 48.7 index48.7Humboldt CountyHumboldt County: 48.6 index48.6Yolo CountyYolo County: 48.6 index48.6Butte CountyButte County: 48.5 index48.5Napa CountyNapa County: 48.4 index48.4Santa Cruz CountySanta Cruz County: 48.3 index48.3Mendocino CountyMendocino County: 48.2 index48.2Nevada CountyNevada County: 48 index48Alameda CountyAlameda County: 47.4 index47.4San Luis Obispo CountySan Luis Obispo County: 47.4 index47.4Santa Clara CountySanta Clara County: 47.4 index47.4Fresno CountyFresno County: 47.4 index47.4El Dorado CountyEl Dorado County: 47.3 index47.3Contra Costa CountyContra Costa County: 47.1 index47.1Siskiyou CountySiskiyou County: 47 index47Orange CountyOrange County: 46.6 index46.6Madera CountyMadera County: 46.5 index46.5Kern CountyKern County: 46.5 index46.5Plumas CountyPlumas County: 46.4 index46.4Shasta CountyShasta County: 46.4 index46.4Merced CountyMerced County: 46.3 index46.3Monterey CountyMonterey County: 46.3 index46.3Imperial CountyImperial County: 46.2 index46.2San Diego CountySan Diego County: 45.9 index45.9Sonoma CountySonoma County: 45.7 index45.7Colusa CountyColusa County: 45.5 index45.5Sutter CountySutter County: 45 index45Yuba CountyYuba County: 45 index45Ventura CountyVentura County: 44.9 index44.9Mono CountyMono County: 44.9 index44.9Modoc CountyModoc County: 44.7 index44.7Amador CountyAmador County: 44.6 index44.6Placer CountyPlacer County: 44.5 index44.5Sacramento CountySacramento County: 44.5 index44.5San Joaquin CountySan Joaquin County: 44.4 index44.4Tuolumne CountyTuolumne County: 44.4 index44.4Calaveras CountyCalaveras County: 44.3 index44.3Riverside CountyRiverside County: 44.2 index44.2Tulare CountyTulare County: 44 index44Inyo CountyInyo County: 43.9 index43.9Stanislaus CountyStanislaus County: 43.9 index43.9San Bernardino CountySan Bernardino County: 43.9 index43.9Mariposa CountyMariposa County: 43.4 index43.4Del Norte CountyDel Norte County: 42.9 index42.9Solano CountySolano County: 42.4 index42.4Kings CountyKings County: 42.1 index42.1Lassen CountyLassen County: 42.1 index42.1San Benito CountySan Benito County: 41.9 index41.9Glenn CountyGlenn County: 40 index40
index. Source: U.S. Census Bureau. Retrieved 2026-10-10.

Full ranking

RankCounties2023
index
Change on 2022
1Alpine County52.8-4.6
2Marin County52.3+0.8
3San Francisco County51.8+0.1
4Sierra County50.9+3
5Tehama County50.5-0
6Trinity County50.4-0.8
7Los Angeles County49.7-0.1
8San Mateo County49.6+0.3
9Santa Barbara County49.2+0.3
10Lake County48.7-0.4
11Humboldt County48.6+0.5
11Yolo County48.6-0.3
13Butte County48.5+0.1
14Napa County48.4+0.8
15Santa Cruz County48.3+0.1
16Mendocino County48.2+0.1
17Nevada County48+0.7
18Alameda County47.4+0.5
18San Luis Obispo County47.4+0.2
20Santa Clara County47.4-0
21Fresno County47.4+0.1
22El Dorado County47.3-0.7
23Contra Costa County47.1-0.1
24Siskiyou County47-2.1
25Orange County46.6-0.3
26Madera County46.5+1.1
27Kern County46.5-0.5
28Plumas County46.4-0.6
29Shasta County46.4+0.4
30Merced County46.3+0.5
31Monterey County46.3+0.3
32Imperial County46.2+0.3
33San Diego County45.9-0.1
34Sonoma County45.7-0.1
35Colusa County45.5-0.8
36Sutter County45-1
37Yuba County45+1.2
38Ventura County44.9-0
39Mono County44.9+4
40Modoc County44.7+4
41Amador County44.6-1.1
42Placer County44.5+0.1
42Sacramento County44.5+0.1
44San Joaquin County44.40
45Tuolumne County44.4-1
46Calaveras County44.3+1.5
47Riverside County44.2-0.5
48Tulare County44-1.2
49Inyo County43.9-1
50Stanislaus County43.9-0.3
51San Bernardino County43.9-0
52Mariposa County43.4-0.4
53Del Norte County42.9-0.3
54Solano County42.4+0.3
55Kings County42.1+0.9
56Lassen County42.1+0.3
57San Benito County41.9+1.3
58Glenn County40-1.4

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/2023/table-based-SF/data/5YRData/acsdt5y2023-b19083.dat. Retrieved 2026-10-10.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in California by gini index using official data, and cite the source.
rank_places {"indicator":"gini_index","level":"province","within":"California","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=gini_index&level=province&within=California&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest gini index?

Alpine County, with 52.8 index in 2023, according to the U.S. Census Bureau.

Which county has the lowest gini index?

Glenn County, with 40 index in 2023.

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