RANKING · 2020 CENSUS · 56 SHOWN OF 56

Least racially diverse, Montana counties · 2020

Montana counties with the lowest CensusEasy Diversity Score, where most residents share the same race or ethnicity (2023 ACS). This list covers the 56 counties in Montana that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPDIVERSITY SCOREVS 2000

01Petroleum County, MTMT5483−13%

02Garfield County, MTMT1,1483+153%

03Liberty County, MTMT1,9574+222%

04Prairie County, MTMT1,11210+381%

05Carter County, MTMT1,38311+450%

06Wibaux County, MTMT88511+493%

07Treasure County, MTMT72812+140%

08Fergus County, MTMT11,82513+394%

09Meagher County, MTMT2,13714+232%

10Broadwater County, MTMT8,49314+222%

11Granite County, MTMT3,65814+286%

12Carbon County, MTMT11,46614+149%

13Fallon County, MTMT2,95915+607%

14Powder River County, MTMT1,78115+747%

15Judith Basin County, MTMT2,16215+843%

16Madison County, MTMT10,02615+180%

17McCone County, MTMT1,72016+292%

18Stillwater County, MTMT9,44516+174%

19Wheatland County, MTMT2,10016+381%

20Park County, MTMT18,21417+165%

21Jefferson County, MTMT13,32917+235%

22Sweet Grass County, MTMT3,76217+265%

23Teton County, MTMT6,49617+394%

24Flathead County, MTMT115,42919+268%

25Custer County, MTMT12,03419+307%

26Lincoln County, MTMT22,32819+310%

27Dawson County, MTMT8,69220+510%

28Ravalli County, MTMT48,58220+248%

29Deer Lodge County, MTMT9,70920+271%

30Mineral County, MTMT5,18521+256%

31Musselshell County, MTMT5,58221+357%

32Sheridan County, MTMT3,43621+472%

33Daniels County, MTMT1,61222+382%

34Silver Bow County, MTMT36,11823+180%

35Sanders County, MTMT14,06223+341%

36Lewis and Clark County, MTMT75,33123+317%

37Beaverhead County, MTMT10,04323+215%

38Gallatin County, MTMT128,74024+258%

39Golden Valley County, MTMT84424+609%

40Powell County, MTMT7,15727+261%

41Missoula County, MTMT123,51330+307%

42Richland County, MTMT11,37730+397%

43Toole County, MTMT5,21132+677%

44Yellowstone County, MTMT172,69234+191%

45Cascade County, MTMT85,02935+217%

46Valley County, MTMT7,38535+997%

47Phillips County, MTMT4,20336+737%

48Pondera County, MTMT6,07241+1209%

49Chouteau County, MTMT5,86550+1785%

50Glacier County, MTMT13,46354+510%

51Hill County, MTMT16,16756+1005%

52Big Horn County, MTMT12,75257+149%

53Lake County, MTMT33,39260+529%

54Roosevelt County, MTMT10,24261+526%

55Blaine County, MTMT6,86065+1059%

56Rosebud County, MTMT8,25365+530%

SHOWING 1–56 OF 56

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES