RANKING · 1990 CENSUS · 56 SHOWN OF 56

Oldest housing stock, Montana counties · 1990

Montana counties ranked by oldest median year of construction (1990 ACS). This list covers the 56 counties in Montana that qualify, ranked against each other statewide. The median across all 56 is 1959.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS –

01Deer Lodge County, MTMT9,7091939–

02Wheatland County, MTMT2,1001939–

03Silver Bow County, MTMT36,1181943–

04Daniels County, MTMT1,6121946–

05Judith Basin County, MTMT2,1621946–

06Prairie County, MTMT1,1121948–

07Teton County, MTMT6,4961950–

08Fergus County, MTMT11,8251952–

09Golden Valley County, MTMT8441952–

10Wibaux County, MTMT8851954–

11Meagher County, MTMT2,1371955–

12Toole County, MTMT5,2111955–

13Treasure County, MTMT7281955–

14Chouteau County, MTMT5,8651956–

15Fallon County, MTMT2,9591956–

16Petroleum County, MTMT5481956–

17Pondera County, MTMT6,0721956–

18Sheridan County, MTMT3,4361956–

19Liberty County, MTMT1,9571956–

20Sweet Grass County, MTMT3,7621956–

21Custer County, MTMT12,0341957–

22Dawson County, MTMT8,6921957–

23Carter County, MTMT1,3831958–

24McCone County, MTMT1,7201958–

25Powell County, MTMT7,1571958–

26Hill County, MTMT16,1671959–

27Musselshell County, MTMT5,5821959–

28Park County, MTMT18,2141959–

29Phillips County, MTMT4,2031959–

30Cascade County, MTMT85,0291960–

31Granite County, MTMT3,6581960–

32Carbon County, MTMT11,4661962–

33Garfield County, MTMT1,1481962–

34Valley County, MTMT7,3851963–

35Blaine County, MTMT6,8601965–

36Powder River County, MTMT1,7811965–

37Richland County, MTMT11,3771965–

38Roosevelt County, MTMT10,2421965–

39Beaverhead County, MTMT10,0431965–

40Stillwater County, MTMT9,4451966–

41Missoula County, MTMT123,5131968–

42Lewis and Clark County, MTMT75,3311969–

43Lincoln County, MTMT22,3281969–

44Yellowstone County, MTMT172,6921970–

45Glacier County, MTMT13,4631971–

46Mineral County, MTMT5,1851971–

47Sanders County, MTMT14,0621971–

48Big Horn County, MTMT12,7521972–

49Broadwater County, MTMT8,4931972–

50Flathead County, MTMT115,4291972–

51Gallatin County, MTMT128,7401972–

52Lake County, MTMT33,3921972–

53Madison County, MTMT10,0261972–

54Ravalli County, MTMT48,5821972–

55Jefferson County, MTMT13,3291973–

56Rosebud County, MTMT8,2531975–

SHOWING 1–56 OF 56

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