Counties in Idaho by gini index

Name: Counties in Idaho by gini index, 2021
Creator: U.S. Census Bureau
License: Public domain (US federal government work, citation requested)

Madison County had the highest gini index of 44 counties in 2021, at 49.1 index. Clark County had the lowest, at 31.9 index. The median was 43.2 index and the figure for Idaho was 44.3 index. Source: the U.S. Census Bureau.

Highest49.1Madison County

Lowest31.9Clark County

Median43.244 counties

Idaho44.3History

All counties, 2021

CSV Chart (SVG)

index. Source: U.S. Census Bureau. Retrieved 2026-10-10.

Full ranking

Rank	Counties	2021 index
1	Madison County	49.1
2	Adams County	48.7
3	Camas County	48.6
4	Boundary County	47.7
5	Lemhi County	47.5
6	Blaine County	46.3
7	Butte County	46.1
8	Latah County	46
9	Ada County	45.4
10	Lewis County	45.3
11	Nez Perce County	45.3
12	Bonner County	44.8
13	Twin Falls County	44.7
14	Washington County	44.6
15	Idaho County	44.1
16	Cassia County	43.7
17	Gem County	43.6
17	Valley County	43.6
19	Bonneville County	43.5
20	Jerome County	43.4
21	Minidoka County	43.3
22	Shoshone County	43.3
23	Bannock County	43.1
24	Benewah County	42.9
25	Bingham County	42.6
26	Owyhee County	42.6
27	Gooding County	42.6
28	Clearwater County	42.5
29	Kootenai County	42.4
30	Payette County	41.6
31	Elmore County	41.5
32	Bear Lake County	41.4
32	Custer County	41.4
34	Franklin County	40.4
35	Lincoln County	40
36	Canyon County	39.9
37	Teton County	38.9
38	Boise County	38.5
39	Oneida County	38.2
40	Jefferson County	37.9
41	Caribou County	37.1
42	Fremont County	36.7
43	Power County	35.1
44	Clark County	31.9

Other periods

2024
2023
2022
2021

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/2021/table-based-SF/data/5YRData/acsdt5y2021-b19083.dat. Retrieved 2026-10-10.

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Questions

Which county has the highest gini index?

Madison County, with 49.1 index in 2021, according to the U.S. Census Bureau.

Which county has the lowest gini index?

Clark County, with 31.9 index in 2021.

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.