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About this map

The chance that two residents picked at random belong to different racial or ethnic groups. 0 means everyone is in the same group; 50+ is very mixed. The U.S. overall scores about 61.

Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024).

U.S.
61.4
Montana
29.4
Rankings
Full list

Top and bottom zip codes in Montana

Zip codes with 1,000+ residents

Most diverse zip codes

See all
  1. 159821Arlee67.5
  2. 259201Wolf Point63.5
  3. 359864Ronan62.6
  4. 459034Hardin60.1
  5. 559003Ashland58.8
  6. 659865Saint Ignatius58.6
  7. 759824Charlo58.4
  8. 859427Cut Bank52.6
  9. 959758West Yellowstone51.8
  10. 1059323Colstrip48.6

Least diverse zip codes

See all
  1. 159645White Sulphur Springs6.4
  2. 259022Crow Agency8.3
  3. 359215Circle9.2
  4. 459716Big Sky9.5
  5. 559639Lincoln9.9
  6. 659846Huson9.9
  7. 759313Baker10.4
  8. 859853Noxon10.6
  9. 959932Somers10.6
  10. 1059422Choteau10.9

Diversity index by county in Montana

  1. 1Rosebud County59.6
  2. 2Blaine County58.1
  3. 3Roosevelt County57.9
  4. 4Lake County53.2
  5. 5Glacier County50.9
  6. 6Hill County49.6
  7. 7Big Horn County48.7
  8. 8Chouteau County40.1
  9. 9Pondera County35.5
  10. 10Phillips County33
  11. 11Toole County31.7
  12. 12Cascade County31.4
  13. 13Yellowstone County29.6
  14. 14Valley County28.2
  15. 15Missoula County26.4
  16. 16Musselshell County24.5
  17. 17Powell County24.3
  18. 18Gallatin County22.9
  19. 19Richland County22.9
  20. 20Prairie County22
  21. 21Sheridan County21.8
  22. 22Sanders County21.6
  23. 23Lewis and Clark County21.1
  24. 24Ravalli County21.1
  25. 25Broadwater County20.4
  26. 26Mineral County20.4
  27. 27Custer County20.3
  28. 28Beaverhead County20.2
  29. 29Carter County20.2
  30. 30Powder River County20.1
  31. 31Silver Bow County20.1
  32. 32Deer Lodge County19.9
  33. 33Wibaux County19.8
  34. 34Granite County18.8
  35. 35Lincoln County18.7
  36. 36Flathead County18.6
  37. 37Judith Basin County18.6
  38. 38Carbon County18.4
  39. 39Daniels County18.2
  40. 40Golden Valley County18.1
  41. 41Madison County18
  42. 42Dawson County17.9
  43. 43Jefferson County17.7
  44. 44Sweet Grass County17.4
  45. 45Park County17
  46. 46Teton County16.1
  47. 47Stillwater County15.1
  48. 48McCone County14.9
  49. 49Fallon County14.7
  50. 50Fergus County14.5
  51. 51Treasure County13.2
  52. 52Liberty County12.6
  53. 53Meagher County11.5
  54. 54Wheatland County11.2
  55. 55Garfield County6.4
  56. 56Petroleum County2.2

Questions about this map

Which zip code has the highest diversity index in Montana?

Among zip codes with at least 1,000 residents, 59821 (Arlee, MT) has the highest: 67.5.

Which zip code has the lowest diversity index in Montana?

59645 (White Sulphur Springs, MT) has the lowest: 6.4.

What is the diversity index for the United States?

61.4; in Montana it is 29.4.

Where does this data come from?

U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024). The chance that two residents picked at random belong to different racial or ethnic groups. 0 means everyone is in the same group; 50+ is very mixed. The U.S. overall scores about 61.

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