RANKING · 2024 ACS · 56 SHOWN OF 56

Highest fertility rate, Montana counties

Montana counties ranked by general fertility rate, meaning births per 1,000 women ages 15-50 in the past 12 months (2024 ACS). This list covers the 56 counties in Montana that qualify, ranked against each other statewide. The median across all 56 is 62.7.

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SAME RANKING BYCities States Metros ZIP codes

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

RANKPLACESTATEPOPBIRTHS PER 1,000 WOMEN (15-50)VS 2010

01Petroleum County, MTMT548159.4+155%

02Liberty County, MTMT1,957158.2+459%

03Carter County, MTMT1,383138.6+693%

04Treasure County, MTMT728129.3–

05Pondera County, MTMT6,072128.1+270%

06Prairie County, MTMT1,112125.0+85%

07Garfield County, MTMT1,148122.4–

08Musselshell County, MTMT5,582120.2+14%

09Golden Valley County, MTMT844113.5–

10Wibaux County, MTMT885111.1+175%

11Judith Basin County, MTMT2,162110.1+356%

12Powder River County, MTMT1,781108.5−8%

13Rosebud County, MTMT8,25391.7+70%

14Toole County, MTMT5,21189.0+513%

15Fallon County, MTMT2,95987.5+470%

16Cascade County, MTMT85,02986.8+27%

17Custer County, MTMT12,03485.0−12%

18Glacier County, MTMT13,46372.0−6%

19Yellowstone County, MTMT172,69270.7−3%

20Phillips County, MTMT4,20370.2+181%

21Fergus County, MTMT11,82569.5−6%

22Ravalli County, MTMT48,58269.3+20%

23Park County, MTMT18,21468.8+67%

24Richland County, MTMT11,37768.1−45%

25Madison County, MTMT10,02667.2−22%

26Deer Lodge County, MTMT9,70967.0+57%

27Sheridan County, MTMT3,43665.2+9%

28McCone County, MTMT1,72062.7+3%

29Sweet Grass County, MTMT3,76262.3+1359%

30Dawson County, MTMT8,69262.0−49%

31Big Horn County, MTMT12,75259.5−32%

32Mineral County, MTMT5,18558.6+68%

33Valley County, MTMT7,38555.1+2%

34Stillwater County, MTMT9,44553.1+71%

35Hill County, MTMT16,16751.5−26%

36Lewis and Clark County, MTMT75,33151.4−13%

37Carbon County, MTMT11,46651.0+48%

38Teton County, MTMT6,49649.6−2%

39Beaverhead County, MTMT10,04348.9−25%

40Flathead County, MTMT115,42948.7−21%

41Gallatin County, MTMT128,74045.0−12%

42Lake County, MTMT33,39243.0−50%

43Jefferson County, MTMT13,32936.9−4%

44Lincoln County, MTMT22,32835.5−44%

45Sanders County, MTMT14,06234.3−8%

46Missoula County, MTMT123,51333.8−7%

47Daniels County, MTMT1,61233.2+251%

48Broadwater County, MTMT8,49332.8+19%

49Roosevelt County, MTMT10,24228.2−65%

50Blaine County, MTMT6,86028.1−65%

51Wheatland County, MTMT2,10025.0−46%

52Meagher County, MTMT2,13724.8+12%

53Chouteau County, MTMT5,86520.7−59%

54Silver Bow County, MTMT36,11819.5−58%

55Powell County, MTMT7,15711.2−87%

56Granite County, MTMT3,6586.6−62%

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES