Counties in Montana by gini index

Prairie County had the highest gini index of 56 counties in 2023, at 52.2 index. Valley County had the lowest, at 38.4 index. The median was 45 index and the figure for Montana was 46.3 index. Source: the U.S. Census Bureau.

Highest52.2Prairie County
Lowest38.4Valley County
Median4556 counties
Montana46.3History

All counties, 2023

CSVChart (SVG)

Prairie CountyPrairie County: 52.2 index52.2Judith Basin CountyJudith Basin County: 50.6 index50.6Sheridan CountySheridan County: 50 index50Liberty CountyLiberty County: 50 index50Wheatland CountyWheatland County: 49.9 index49.9Lake CountyLake County: 48.8 index48.8Fallon CountyFallon County: 48.7 index48.7Treasure CountyTreasure County: 48.6 index48.6Silver Bow CountySilver Bow County: 48.5 index48.5Glacier CountyGlacier County: 48.4 index48.4Park CountyPark County: 47.9 index47.9Granite CountyGranite County: 47.7 index47.7Musselshell CountyMusselshell County: 47.4 index47.4Gallatin CountyGallatin County: 47.2 index47.2Missoula CountyMissoula County: 47.2 index47.2Powder River CountyPowder River County: 47 index47Blaine CountyBlaine County: 46.9 index46.9Roosevelt CountyRoosevelt County: 46.6 index46.6Carbon CountyCarbon County: 46.3 index46.3Garfield CountyGarfield County: 46.3 index46.3Stillwater CountyStillwater County: 46 index46Yellowstone CountyYellowstone County: 45.8 index45.8Sweet Grass CountySweet Grass County: 45.7 index45.7Richland CountyRichland County: 45.6 index45.6Rosebud CountyRosebud County: 45.5 index45.5Golden Valley CountyGolden Valley County: 45.4 index45.4Mineral CountyMineral County: 45.2 index45.2Pondera CountyPondera County: 45 index45Flathead CountyFlathead County: 45 index45Sanders CountySanders County: 44.9 index44.9Toole CountyToole County: 44.6 index44.6Custer CountyCuster County: 44.6 index44.6Powell CountyPowell County: 44.5 index44.5Meagher CountyMeagher County: 44.4 index44.4Lincoln CountyLincoln County: 44.4 index44.4Cascade CountyCascade County: 44.4 index44.4Lewis and Clark CountyLewis and Clark County: 44.3 index44.3Hill CountyHill County: 44.3 index44.3Chouteau CountyChouteau County: 44.2 index44.2Phillips CountyPhillips County: 44 index44Ravalli CountyRavalli County: 43.9 index43.9Beaverhead CountyBeaverhead County: 43.6 index43.6Big Horn CountyBig Horn County: 43.3 index43.3Fergus CountyFergus County: 43.2 index43.2Jefferson CountyJefferson County: 43.2 index43.2Deer Lodge CountyDeer Lodge County: 42.5 index42.5Petroleum CountyPetroleum County: 42.1 index42.1Broadwater CountyBroadwater County: 42 index42Teton CountyTeton County: 41.5 index41.5Wibaux CountyWibaux County: 41.5 index41.5Madison CountyMadison County: 41.3 index41.3Dawson CountyDawson County: 39.9 index39.9Carter CountyCarter County: 38.9 index38.9McCone CountyMcCone County: 38.8 index38.8Daniels CountyDaniels County: 38.4 index38.4Valley CountyValley County: 38.4 index38.4
index. Source: U.S. Census Bureau. Retrieved 2026-10-10.

Full ranking

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.

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Questions

Which county has the highest gini index?

Prairie County, with 52.2 index in 2023, according to the U.S. Census Bureau.

Which county has the lowest gini index?

Valley County, with 38.4 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 Montana: more rankings