RANKING · 2020 CENSUS · 56 SHOWN OF 56

Most uninsured people, Montana counties · 2020

Montana counties with the most residents lacking health insurance, as of the 2020 American Community Survey. Ranked by number of people, not the uninsured rate. This list covers the 56 counties in Montana that qualify, ranked against each other statewide. The median across all 56 is 554.

MontanaAll states All rankings

SAME RANKING BYCities States Metros

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Largest senior population Most unmarried people Most unmarried men

RANKPLACESTATEPOPUNINSURED RESIDENTSVS –

01Yellowstone County, MTMT172,6929,584–

02Flathead County, MTMT115,4299,124–

03Gallatin County, MTMT128,7408,159–

04Missoula County, MTMT123,5137,657–

05Cascade County, MTMT85,0295,740–

06Glacier County, MTMT13,4635,052–

07Lake County, MTMT33,3924,115–

08Ravalli County, MTMT48,5824,111–

09Big Horn County, MTMT12,7523,651–

10Lewis and Clark County, MTMT75,3313,527–

11Roosevelt County, MTMT10,2422,962–

12Silver Bow County, MTMT36,1182,149–

13Lincoln County, MTMT22,3281,876–

14Park County, MTMT18,2141,676–

15Rosebud County, MTMT8,2531,491–

16Fergus County, MTMT11,8251,180–

17Sanders County, MTMT14,0621,130–

18Blaine County, MTMT6,8601,012–

19Hill County, MTMT16,167872–

20Madison County, MTMT10,026761–

21Richland County, MTMT11,377751–

22Custer County, MTMT12,034712–

23Jefferson County, MTMT13,329710–

24Valley County, MTMT7,385698–

25Carbon County, MTMT11,466600–

26Broadwater County, MTMT8,493594–

27Deer Lodge County, MTMT9,709579–

28Teton County, MTMT6,496554–

29Beaverhead County, MTMT10,043550–

30Phillips County, MTMT4,203484–

31Toole County, MTMT5,211465–

32Pondera County, MTMT6,072453–

33Chouteau County, MTMT5,865411–

34Stillwater County, MTMT9,445401–

35Powell County, MTMT7,157375–

36Mineral County, MTMT5,185350–

37Musselshell County, MTMT5,582339–

38Dawson County, MTMT8,692292–

39Wheatland County, MTMT2,100292–

40Sheridan County, MTMT3,436283–

41Sweet Grass County, MTMT3,762229–

42Granite County, MTMT3,658222–

43Fallon County, MTMT2,959217–

44Carter County, MTMT1,383211–

45Powder River County, MTMT1,781180–

46Meagher County, MTMT2,137172–

47Liberty County, MTMT1,957162–

48Garfield County, MTMT1,148157–

49Judith Basin County, MTMT2,162134–

50McCone County, MTMT1,720110–

51Wibaux County, MTMT88582–

52Golden Valley County, MTMT84481–

53Daniels County, MTMT1,61269–

54Prairie County, MTMT1,11245–

55Treasure County, MTMT72838–

56Petroleum County, MTMT54826–

SHOWING 1–56 OF 56

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS