RANKING · 2010 CENSUS · 56 SHOWN OF 56

Oldest housing stock, Montana counties · 2010

Montana counties ranked by oldest median year of construction (2010 ACS). This list covers the 56 counties in Montana that qualify, ranked against each other statewide. The median across all 56 is 1965.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS 1990

01Wheatland County, MTMT2,10019460%

02Deer Lodge County, MTMT9,70919470%

03Prairie County, MTMT1,11219500%

04Silver Bow County, MTMT36,11819500%

05Fergus County, MTMT11,82519530%

06Judith Basin County, MTMT2,16219550%

07Chouteau County, MTMT5,86519560%

08Daniels County, MTMT1,6121956+1%

09Wibaux County, MTMT88519560%

10McCone County, MTMT1,72019570%

11Sheridan County, MTMT3,43619580%

12Toole County, MTMT5,21119580%

13Dawson County, MTMT8,69219590%

14Treasure County, MTMT72819590%

15Teton County, MTMT6,4961960+1%

16Carter County, MTMT1,38319600%

17Pondera County, MTMT6,07219600%

18Garfield County, MTMT1,14819610%

19Golden Valley County, MTMT84419610%

20Phillips County, MTMT4,20319610%

21Roosevelt County, MTMT10,24219610%

22Custer County, MTMT12,03419620%

23Musselshell County, MTMT5,58219620%

24Valley County, MTMT7,38519620%

25Liberty County, MTMT1,95719640%

26Blaine County, MTMT6,86019650%

27Fallon County, MTMT2,95919650%

28Hill County, MTMT16,16719650%

29Powell County, MTMT7,15719650%

30Sweet Grass County, MTMT3,76219650%

31Cascade County, MTMT85,02919660%

32Granite County, MTMT3,65819660%

33Petroleum County, MTMT5481966+1%

34Carbon County, MTMT11,46619700%

35Meagher County, MTMT2,1371970+1%

36Park County, MTMT18,2141970+1%

37Powder River County, MTMT1,78119700%

38Richland County, MTMT11,37719710%

39Beaverhead County, MTMT10,04319710%

40Big Horn County, MTMT12,75219720%

41Glacier County, MTMT13,46319720%

42Lewis and Clark County, MTMT75,33119750%

43Lincoln County, MTMT22,32819750%

44Mineral County, MTMT5,18519750%

45Rosebud County, MTMT8,25319750%

46Yellowstone County, MTMT172,69219750%

47Stillwater County, MTMT9,44519750%

48Sanders County, MTMT14,06219770%

49Broadwater County, MTMT8,49319780%

50Lake County, MTMT33,39219780%

51Missoula County, MTMT123,5131978+1%

52Madison County, MTMT10,02619800%

53Jefferson County, MTMT13,32919800%

54Flathead County, MTMT115,4291982+1%

55Ravalli County, MTMT48,5821982+1%

56Gallatin County, MTMT128,7401987+1%

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