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Demographics Table

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Demographic Data Report for Montana by County
Population: Age under 18
All Races (includes Hispanic), Both Sexes
2017-2021 American Community Survey 5-Year Data
Sorted by Name
County
 sort alphabetically by name descending
Value (Percent)
 sort by value ascending
People (Age Under 18)
 sort by sample size ascending
Rank within US
(of 3143 counties)
 sort by rank ascending
Montana 21.6 232,815 37 of 52
United States 22.5 74,234,075 N/A
Beaverhead County 17.2 1,611 2,931
Big Horn County 34.0 4,482 26
Blaine County 30.3 2,134 89
Broadwater County 19.1 1,270 2,632
Carbon County 17.8 1,867 2,853
Carter County 17.5 236 2,891
Cascade County 22.8 19,168 1,352
Chouteau County 23.3 1,372 1,138
Custer County 20.2 2,423 2,327
Daniels County 21.2 368 2,034
Dawson County 21.0 1,889 2,089
Deer Lodge County 13.6 1,271 3,112
Fallon County 24.8 761 579
Fergus County 20.1 2,301 2,379
Flathead County 21.9 22,673 1,713
Gallatin County 19.8 23,108 2,464
Garfield County 21.7 211 1,816
Glacier County 29.8 4,122 96
Golden Valley County 16.7 137 2,976
Granite County 17.9 596 2,840
Hill County 28.1 4,578 151
Jefferson County 20.5 2,470 2,251
Judith Basin County 23.5 470 1,049
Lake County 23.4 7,253 1,093
Lewis and Clark County 21.6 15,169 1,892
Liberty County 26.2 530 314
Lincoln County 18.4 3,613 2,777
Madison County 15.6 1,326 3,052
McCone County 18.9 341 2,675
Meagher County 17.5 338 2,890
Mineral County 19.4 869 2,564
Missoula County 18.7 21,982 2,711
Musselshell County 19.1 917 2,642
Park County 17.2 2,936 2,926
Petroleum County 17.5 76 2,884
Phillips County 23.7 1,004 945
Pondera County 23.7 1,413 968
Powder River County 20.4 359 2,284
Powell County 15.1 1,053 3,072
Prairie County 23.6 290 971
Ravalli County 19.1 8,362 2,640
Richland County 25.5 2,903 420
Roosevelt County 34.1 3,707 24
Rosebud County 28.0 2,368 157
Sanders County 17.6 2,164 2,875
Sheridan County 20.7 728 2,189
Silver Bow County 20.6 7,228 2,203
Stillwater County 21.6 1,922 1,898
Sweet Grass County 20.5 755 2,266
Teton County 24.8 1,528 581
Toole County 20.1 1,010 2,360
Treasure County 16.9 117 2,958
Valley County 23.5 1,772 1,043
Wheatland County 20.8 434 2,139
Wibaux County 26.2 267 306
Yellowstone County 23.6 38,563 999
Notes:
Created by statecancerprofiles.cancer.gov on 03/01/2024 10:51 am.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age under 18, see the dictionary.
Data for United States does not include Puerto Rico.

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