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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
2018-2022 American Community Survey 5-Year Data
Sorted by Value

County
 sort alphabetically by name ascending
2023 Rural-Urban Continuum Codes Φ
 sort by rural urban descending
Value (Percent)
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People (Age Under 18)
 sort by sample size ascending
Rank within US
(of 3143 counties)
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United States N/A 22.1 73,213,705 N/A
Montana N/A 21.2 231,347 37 of 52
Roosevelt County Rural 33.5 3,615 20
Big Horn County Rural 33.0 4,321 24
Blaine County Rural 29.7 2,089 83
Glacier County Rural 29.5 4,067 88
Rosebud County Rural 29.1 2,415 106
Hill County Rural 27.8 4,513 140
Wibaux County Rural 26.7 299 203
Liberty County Rural 26.4 526 234
Fallon County Rural 25.7 755 321
Richland County Rural 25.4 2,891 362
Teton County Rural 24.8 1,545 500
Judith Basin County Rural 24.2 494 625
Phillips County Rural 23.5 994 894
Pondera County Rural 23.4 1,400 936
Chouteau County Rural 23.2 1,366 1,029
Yellowstone County Urban 23.1 38,303 1,040
Valley County Rural 22.6 1,710 1,263
Lake County Rural 22.6 7,128 1,269
Prairie County Rural 22.6 290 1,279
Garfield County Rural 22.4 219 1,351
Cascade County Urban 22.3 18,833 1,403
Sheridan County Rural 21.8 805 1,660
Flathead County Rural 21.7 22,956 1,703
Dawson County Rural 21.5 1,920 1,762
Lewis and Clark County Urban 21.3 15,237 1,862
Wheatland County Rural 20.9 431 2,002
Mineral County Urban 20.8 967 2,044
Stillwater County Urban 20.7 1,856 2,088
Toole County Rural 20.6 1,036 2,097
Silver Bow County Rural 20.2 7,144 2,237
Sweet Grass County Rural 20.2 745 2,268
Jefferson County Urban 20.1 2,466 2,285
Fergus County Rural 19.7 2,266 2,380
Custer County Rural 19.7 2,353 2,388
Gallatin County Urban 19.2 22,975 2,525
Ravalli County Rural 18.8 8,421 2,632
Broadwater County Urban 18.7 1,308 2,634
Musselshell County Rural 18.7 921 2,643
Daniels County Rural 18.6 286 2,659
Missoula County Urban 18.3 21,733 2,708
Carter County Rural 18.2 242 2,737
Lincoln County Rural 18.0 3,637 2,760
Sanders County Rural 17.5 2,213 2,849
Carbon County Urban 17.5 1,860 2,853
Treasure County Rural 17.4 118 2,872
Petroleum County Rural 17.3 72 2,876
Beaverhead County Rural 17.2 1,628 2,894
McCone County Rural 16.9 295 2,937
Powder River County Rural 16.9 299 2,941
Park County Rural 16.6 2,877 2,960
Golden Valley County Rural 15.8 133 3,017
Granite County Rural 15.7 530 3,027
Meagher County Rural 15.3 298 3,052
Madison County Rural 15.0 1,307 3,069
Powell County Rural 14.6 1,024 3,083
Deer Lodge County Rural 12.9 1,215 3,114
Notes:
Created by statecancerprofiles.cancer.gov on 02/09/2025 4:32 pm.

Φ Rural-Urban Continuum Codes provided by the USDA.

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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