Data / Rankings / Crude birth rate, July to June / Counties in Montana

Counties in Montana by birth rate (July to June), 2025

Roosevelt County had the highest birth rate (July to June) of 56 counties in 2025, at 15.74 per 1,000 inhabitants. Treasure County had the lowest, at 4.1 per 1,000 inhabitants. The median was 9.51 per 1,000 inhabitants and the figure for Montana was 9.94 per 1,000 inhabitants. Source: the U.S. Census Bureau.

Highest15.74Roosevelt County
Lowest4.1Treasure County
Median9.5156 counties
Montana9.94History

All counties, 2025

CSVChart (SVG)

Roosevelt CountyRoosevelt County: 15.74 per 1,000 inhabitants15.74Golden Valley CountyGolden Valley County: 15.4 per 1,000 inhabitants15.4Big Horn CountyBig Horn County: 14.84 per 1,000 inhabitants14.84Hill CountyHill County: 14 per 1,000 inhabitants14Rosebud CountyRosebud County: 13.96 per 1,000 inhabitants13.96Glacier CountyGlacier County: 13.34 per 1,000 inhabitants13.34Powder River CountyPowder River County: 13 per 1,000 inhabitants13Fallon CountyFallon County: 12.84 per 1,000 inhabitants12.84McCone CountyMcCone County: 12.81 per 1,000 inhabitants12.81Dawson CountyDawson County: 12.51 per 1,000 inhabitants12.51Fergus CountyFergus County: 12.35 per 1,000 inhabitants12.35Garfield CountyGarfield County: 12.05 per 1,000 inhabitants12.05Blaine CountyBlaine County: 11.79 per 1,000 inhabitants11.79Teton CountyTeton County: 11.6 per 1,000 inhabitants11.6Richland CountyRichland County: 11.58 per 1,000 inhabitants11.58Custer CountyCuster County: 11.49 per 1,000 inhabitants11.49Pondera CountyPondera County: 11.21 per 1,000 inhabitants11.21Cascade CountyCascade County: 11.13 per 1,000 inhabitants11.13Daniels CountyDaniels County: 11.06 per 1,000 inhabitants11.06Yellowstone CountyYellowstone County: 11.06 per 1,000 inhabitants11.06Musselshell CountyMusselshell County: 10.88 per 1,000 inhabitants10.88Flathead CountyFlathead County: 10.37 per 1,000 inhabitants10.37Judith Basin CountyJudith Basin County: 10.29 per 1,000 inhabitants10.29Wheatland CountyWheatland County: 10.1 per 1,000 inhabitants10.1Carter CountyCarter County: 9.98 per 1,000 inhabitants9.98Carbon CountyCarbon County: 9.84 per 1,000 inhabitants9.84Sweet Grass CountySweet Grass County: 9.76 per 1,000 inhabitants9.76Beaverhead CountyBeaverhead County: 9.58 per 1,000 inhabitants9.58Sanders CountySanders County: 9.44 per 1,000 inhabitants9.44Deer Lodge CountyDeer Lodge County: 9.24 per 1,000 inhabitants9.24Petroleum CountyPetroleum County: 9.21 per 1,000 inhabitants9.21Valley CountyValley County: 9.21 per 1,000 inhabitants9.21Lake CountyLake County: 9.2 per 1,000 inhabitants9.2Lewis and Clark CountyLewis and Clark County: 9.17 per 1,000 inhabitants9.17Meagher CountyMeagher County: 8.98 per 1,000 inhabitants8.98Park CountyPark County: 8.9 per 1,000 inhabitants8.9Gallatin CountyGallatin County: 8.87 per 1,000 inhabitants8.87Lincoln CountyLincoln County: 8.86 per 1,000 inhabitants8.86Stillwater CountyStillwater County: 8.8 per 1,000 inhabitants8.8Missoula CountyMissoula County: 8.77 per 1,000 inhabitants8.77Broadwater CountyBroadwater County: 8.7 per 1,000 inhabitants8.7Toole CountyToole County: 8.68 per 1,000 inhabitants8.68Powell CountyPowell County: 8.54 per 1,000 inhabitants8.54Silver Bow CountySilver Bow County: 8.39 per 1,000 inhabitants8.39Ravalli CountyRavalli County: 8.03 per 1,000 inhabitants8.03Mineral CountyMineral County: 7.71 per 1,000 inhabitants7.71Liberty CountyLiberty County: 7.68 per 1,000 inhabitants7.68Chouteau CountyChouteau County: 7.51 per 1,000 inhabitants7.51Phillips CountyPhillips County: 7.38 per 1,000 inhabitants7.38Madison CountyMadison County: 7.27 per 1,000 inhabitants7.27Jefferson CountyJefferson County: 7.08 per 1,000 inhabitants7.08Sheridan CountySheridan County: 6.94 per 1,000 inhabitants6.94Wibaux CountyWibaux County: 6.68 per 1,000 inhabitants6.68Granite CountyGranite County: 6.58 per 1,000 inhabitants6.58Prairie CountyPrairie County: 6.31 per 1,000 inhabitants6.31Treasure CountyTreasure County: 4.1 per 1,000 inhabitants4.1
per 1,000 inhabitants. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2025
per 1,000 inhabitants		Change on 2024
1Roosevelt County Estimated15.74+0.67 pts
2Golden Valley County Estimated15.4-0.99 pts
3Big Horn County Estimated14.84+0.37 pts
4Hill County Estimated14+0.32 pts
5Rosebud County Estimated13.96-0.12 pts
6Glacier County Estimated13.34+0.19 pts
7Powder River County Estimated13-1.28 pts
8Fallon County Estimated12.84-0.58 pts
9McCone County Estimated12.81-1.32 pts
10Dawson County Estimated12.51+0.21 pts
11Fergus County Estimated12.35+0.67 pts
12Garfield County Estimated12.05+0.31 pts
13Blaine County Estimated11.79+0.16 pts
14Teton County Estimated11.6-0.06 pts
15Richland County Estimated11.58+0.04 pts
16Custer County Estimated11.49-0.1 pts
17Pondera County Estimated11.21-0.3 pts
18Cascade County Estimated11.13+0.02 pts
19Daniels County Estimated11.06+0.07 pts
20Yellowstone County Estimated11.06+0.14 pts
21Musselshell County Estimated10.88-0.38 pts
22Flathead County Estimated10.37-0.08 pts
23Judith Basin County Estimated10.29+0.33 pts
24Wheatland County Estimated10.1+0.41 pts
25Carter County Estimated9.98-3.44 pts
26Carbon County Estimated9.84+0.77 pts
27Sweet Grass County Estimated9.76+0.03 pts
28Beaverhead County Estimated9.58-0.08 pts
29Sanders County Estimated9.44+0.24 pts
30Deer Lodge County Estimated9.24+0.28 pts
31Petroleum County Estimated9.21-1.84 pts
32Valley County Estimated9.21+0.3 pts
33Lake County Estimated9.2-0.06 pts
34Lewis and Clark County Estimated9.17+0.18 pts
35Meagher County Estimated8.98-1.1 pts
36Park County Estimated8.9+0.05 pts
37Gallatin County Estimated8.87-0.73 pts
38Lincoln County Estimated8.86+0.36 pts
39Stillwater County Estimated8.8-0.1 pts
40Missoula County Estimated8.77+0.2 pts
41Broadwater County Estimated8.7-0.6 pts
42Toole County Estimated8.68+0.12 pts
43Powell County Estimated8.54+0.25 pts
44Silver Bow County Estimated8.39+0.11 pts
45Ravalli County Estimated8.03-0.04 pts
46Mineral County Estimated7.71+0.35 pts
47Liberty County Estimated7.68-1.02 pts
48Chouteau County Estimated7.51+0.18 pts
49Phillips County Estimated7.38+0.03 pts
50Madison County Estimated7.27-0.71 pts
51Jefferson County Estimated7.08-0.08 pts
52Sheridan County Estimated6.94-0.23 pts
53Wibaux County Estimated6.68+1.17 pts
54Granite County Estimated6.58+0.22 pts
55Prairie County Estimated6.310 pts
56Treasure County Estimated4.1+0.12 pts

Other periods

About this ranking

Estimated live births from July 1 of the previous year through June 30 of the reported year per 1,000 residents, using the average of the population estimates at the two July 1 endpoints.

Published Census population estimates rate. The year identifies the end of the July-to-June period. These estimates can be revised and differ from calendar-year birth rates.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program: birth rate, July 1 of the previous year to June 30 of the reported year, nation, states and counties. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Questions

Which county has the highest birth rate (July to June)?

Roosevelt County, with 15.74 per 1,000 inhabitants in 2025, according to the U.S. Census Bureau.

Which county has the lowest birth rate (July to June)?

Treasure County, with 4.1 per 1,000 inhabitants in 2025.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program: birth rate, July 1 of the previous year to June 30 of the reported year, nation, states and counties. Retrieved 2026-10-08.

Crude birth rate, July to June: other rankings

Counties in Montana: more rankings