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

Counties in Montana by birth rate (July to June)

Roosevelt County had the highest birth rate (July to June) of 56 counties in 2021, at 16.02 per 1,000 inhabitants. Prairie County had the lowest, at 2.74 per 1,000 inhabitants. The median was 9.39 per 1,000 inhabitants and the figure for Montana was 9.89 per 1,000 inhabitants. Source: the U.S. Census Bureau.

Highest16.02Roosevelt County
Lowest2.74Prairie County
Median9.3956 counties
Montana9.89History

All counties, 2021

CSVChart (SVG)

Roosevelt CountyRoosevelt County: 16.02 per 1,000 inhabitants16.02Rosebud CountyRosebud County: 14.4 per 1,000 inhabitants14.4Hill CountyHill County: 14.36 per 1,000 inhabitants14.36Liberty CountyLiberty County: 13.88 per 1,000 inhabitants13.88Petroleum CountyPetroleum County: 13.7 per 1,000 inhabitants13.7Blaine CountyBlaine County: 13.56 per 1,000 inhabitants13.56Big Horn CountyBig Horn County: 13.32 per 1,000 inhabitants13.32Garfield CountyGarfield County: 12.63 per 1,000 inhabitants12.63Richland CountyRichland County: 12.6 per 1,000 inhabitants12.6McCone CountyMcCone County: 12.2 per 1,000 inhabitants12.2Glacier CountyGlacier County: 12.17 per 1,000 inhabitants12.17Treasure CountyTreasure County: 11.78 per 1,000 inhabitants11.78Wheatland CountyWheatland County: 11.66 per 1,000 inhabitants11.66Fallon CountyFallon County: 11.59 per 1,000 inhabitants11.59Pondera CountyPondera County: 11.26 per 1,000 inhabitants11.26Cascade CountyCascade County: 10.91 per 1,000 inhabitants10.91Yellowstone CountyYellowstone County: 10.89 per 1,000 inhabitants10.89Sheridan CountySheridan County: 10.68 per 1,000 inhabitants10.68Judith Basin CountyJudith Basin County: 10.32 per 1,000 inhabitants10.32Flathead CountyFlathead County: 10.24 per 1,000 inhabitants10.24Fergus CountyFergus County: 10.13 per 1,000 inhabitants10.13Teton CountyTeton County: 10.05 per 1,000 inhabitants10.05Gallatin CountyGallatin County: 9.86 per 1,000 inhabitants9.86Dawson CountyDawson County: 9.79 per 1,000 inhabitants9.79Golden Valley CountyGolden Valley County: 9.74 per 1,000 inhabitants9.74Broadwater CountyBroadwater County: 9.73 per 1,000 inhabitants9.73Beaverhead CountyBeaverhead County: 9.51 per 1,000 inhabitants9.51Lewis and Clark CountyLewis and Clark County: 9.41 per 1,000 inhabitants9.41Silver Bow CountySilver Bow County: 9.36 per 1,000 inhabitants9.36Stillwater CountyStillwater County: 9.32 per 1,000 inhabitants9.32Lake CountyLake County: 9.32 per 1,000 inhabitants9.32Missoula CountyMissoula County: 9.13 per 1,000 inhabitants9.13Phillips CountyPhillips County: 9.03 per 1,000 inhabitants9.03Granite CountyGranite County: 9 per 1,000 inhabitants9Custer CountyCuster County: 8.98 per 1,000 inhabitants8.98Valley CountyValley County: 8.85 per 1,000 inhabitants8.85Musselshell CountyMusselshell County: 8.7 per 1,000 inhabitants8.7Wibaux CountyWibaux County: 8.55 per 1,000 inhabitants8.55Meagher CountyMeagher County: 8.23 per 1,000 inhabitants8.23Powder River CountyPowder River County: 8.23 per 1,000 inhabitants8.23Ravalli CountyRavalli County: 8.13 per 1,000 inhabitants8.13Jefferson CountyJefferson County: 8.05 per 1,000 inhabitants8.05Park CountyPark County: 8 per 1,000 inhabitants8Carbon CountyCarbon County: 7.66 per 1,000 inhabitants7.66Deer Lodge CountyDeer Lodge County: 7.39 per 1,000 inhabitants7.39Toole CountyToole County: 7.23 per 1,000 inhabitants7.23Lincoln CountyLincoln County: 7.09 per 1,000 inhabitants7.09Madison CountyMadison County: 6.93 per 1,000 inhabitants6.93Mineral CountyMineral County: 6.79 per 1,000 inhabitants6.79Daniels CountyDaniels County: 6.63 per 1,000 inhabitants6.63Chouteau CountyChouteau County: 6.42 per 1,000 inhabitants6.42Carter CountyCarter County: 6.38 per 1,000 inhabitants6.38Sanders CountySanders County: 6.3 per 1,000 inhabitants6.3Powell CountyPowell County: 6.02 per 1,000 inhabitants6.02Sweet Grass CountySweet Grass County: 4.61 per 1,000 inhabitants4.61Prairie CountyPrairie County: 2.74 per 1,000 inhabitants2.74
per 1,000 inhabitants. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2021
per 1,000 inhabitants
1Roosevelt County Estimated16.02
2Rosebud County Estimated14.4
3Hill County Estimated14.36
4Liberty County Estimated13.88
5Petroleum County Estimated13.7
6Blaine County Estimated13.56
7Big Horn County Estimated13.32
8Garfield County Estimated12.63
9Richland County Estimated12.6
10McCone County Estimated12.2
11Glacier County Estimated12.17
12Treasure County Estimated11.78
13Wheatland County Estimated11.66
14Fallon County Estimated11.59
15Pondera County Estimated11.26
16Cascade County Estimated10.91
17Yellowstone County Estimated10.89
18Sheridan County Estimated10.68
19Judith Basin County Estimated10.32
20Flathead County Estimated10.24
21Fergus County Estimated10.13
22Teton County Estimated10.05
23Gallatin County Estimated9.86
24Dawson County Estimated9.79
25Golden Valley County Estimated9.74
26Broadwater County Estimated9.73
27Beaverhead County Estimated9.51
28Lewis and Clark County Estimated9.41
29Silver Bow County Estimated9.36
30Stillwater County Estimated9.32
31Lake County Estimated9.32
32Missoula County Estimated9.13
33Phillips County Estimated9.03
34Granite County Estimated9
35Custer County Estimated8.98
36Valley County Estimated8.85
37Musselshell County Estimated8.7
38Wibaux County Estimated8.55
39Meagher County Estimated8.23
40Powder River County Estimated8.23
41Ravalli County Estimated8.13
42Jefferson County Estimated8.05
43Park County Estimated8
44Carbon County Estimated7.66
45Deer Lodge County Estimated7.39
46Toole County Estimated7.23
47Lincoln County Estimated7.09
48Madison County Estimated6.93
49Mineral County Estimated6.79
50Daniels County Estimated6.63
51Chouteau County Estimated6.42
52Carter County Estimated6.38
53Sanders County Estimated6.3
54Powell County Estimated6.02
55Sweet Grass County Estimated4.61
56Prairie County Estimated2.74

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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Rank Counties in Montana by birth rate (July to June) using official data, and cite the source.
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Questions

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

Roosevelt County, with 16.02 per 1,000 inhabitants in 2021, according to the U.S. Census Bureau.

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

Prairie County, with 2.74 per 1,000 inhabitants in 2021.

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