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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
2019-2023 American Community Survey 5-Year Data
Sorted by Count

County
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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 descending
Rank within US
(of 3143 counties)
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Montana N/A 21.3 234,942 37 of 52
United States N/A 22.2 73,645,238 N/A
Petroleum County Rural 13.2 53 3,106
Treasure County Rural 15.8 120 3,008
Golden Valley County Rural 14.5 122 3,079
Garfield County Rural 23.6 221 866
Meagher County Rural 12.0 237 3,121
Carter County Rural 17.6 239 2,835
Prairie County Rural 21.6 270 1,725
Daniels County Rural 20.1 307 2,274
Wibaux County Rural 28.0 322 136
Powder River County Rural 18.4 325 2,684
McCone County Rural 18.9 344 2,581
Wheatland County Rural 21.9 448 1,606
Judith Basin County Rural 22.2 456 1,469
Granite County Rural 15.1 517 3,053
Liberty County Rural 29.5 580 90
Fallon County Rural 25.3 714 398
Sweet Grass County Rural 20.4 757 2,187
Sheridan County Rural 21.5 792 1,784
Musselshell County Rural 19.6 991 2,404
Phillips County Rural 23.5 991 900
Mineral County Urban 20.8 999 2,044
Toole County Rural 20.2 1,015 2,249
Powell County Rural 14.7 1,031 3,070
Deer Lodge County Rural 12.4 1,184 3,118
Chouteau County Rural 23.2 1,367 1,042
Broadwater County Urban 19.1 1,396 2,537
Madison County Rural 15.7 1,409 3,014
Pondera County Rural 23.5 1,412 900
Teton County Rural 25.0 1,574 468
Beaverhead County Rural 17.4 1,667 2,857
Valley County Rural 22.5 1,699 1,340
Dawson County Rural 21.1 1,870 1,936
Carbon County Urban 17.4 1,892 2,857
Stillwater County Urban 21.1 1,908 1,936
Blaine County Rural 29.4 2,057 92
Sanders County Rural 17.3 2,233 2,869
Custer County Rural 19.9 2,381 2,329
Rosebud County Rural 28.9 2,384 109
Fergus County Rural 20.7 2,403 2,085
Jefferson County Urban 20.2 2,526 2,249
Richland County Rural 25.3 2,864 398
Park County Rural 17.0 2,969 2,908
Roosevelt County Rural 33.4 3,557 25
Lincoln County Rural 18.0 3,725 2,761
Glacier County Rural 29.7 4,076 85
Big Horn County Rural 32.4 4,196 33
Hill County Rural 28.4 4,618 124
Lake County Rural 22.6 7,237 1,288
Silver Bow County Rural 20.6 7,334 2,123
Ravalli County Rural 18.8 8,601 2,608
Lewis and Clark County Urban 21.4 15,542 1,821
Cascade County Urban 22.5 19,000 1,340
Missoula County Urban 18.4 22,072 2,684
Gallatin County Urban 19.2 23,499 2,514
Flathead County Rural 21.8 23,597 1,646
Yellowstone County Urban 23.2 38,842 1,042
Notes:
Created by statecancerprofiles.cancer.gov on 06/13/2025 3:25 am.

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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