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Demographic Data Report for Montana by County
Population: Age under 18
All Races (includes Hispanic), Both Sexes
2015-2019 American Community Survey 5-Year Data
Sorted by Value
County
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Value (Percent)
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People (Age Under 18)
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Rank within US
(of 3146 counties)
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United States 22.6 73,429,392 N/A
Montana 21.7 228,386 37 of 52
Big Horn County 33.9 4,541 20
Roosevelt County 33.5 3,746 27
Glacier County 31.6 4,336 51
Blaine County 29.9 2,007 85
Rosebud County 28.6 2,615 133
Hill County 27.7 4,546 163
Wibaux County 26.8 301 238
Richland County 25.3 2,833 455
Wheatland County 25.1 538 494
Fallon County 24.9 727 548
Pondera County 24.5 1,471 637
Teton County 24.1 1,468 763
Lake County 23.9 7,159 855
Chouteau County 23.7 1,356 964
Yellowstone County 23.6 37,451 1,001
McCone County 23.5 421 1,013
Phillips County 23.4 952 1,066
Daniels County 22.8 394 1,339
Prairie County 22.8 285 1,341
Liberty County 22.7 533 1,381
Cascade County 22.5 18,345 1,462
Stillwater County 22.2 2,106 1,568
Flathead County 22.0 22,022 1,661
Valley County 22.0 1,646 1,663
Custer County 22.0 2,575 1,695
Carter County 21.6 287 1,865
Lewis and Clark County 21.6 14,615 1,869
Dawson County 21.2 1,912 2,012
Jefferson County 21.1 2,512 2,068
Fergus County 20.9 2,346 2,121
Garfield County 20.5 212 2,273
Judith Basin County 20.4 399 2,287
Sheridan County 20.3 708 2,320
Silver Bow County 20.2 7,017 2,361
Petroleum County 20.1 91 2,393
Gallatin County 20.0 21,648 2,404
Musselshell County 19.8 946 2,449
Broadwater County 19.5 1,157 2,550
Ravalli County 19.3 8,225 2,585
Meagher County 19.2 363 2,618
Toole County 19.0 931 2,667
Missoula County 19.0 22,265 2,681
Sweet Grass County 18.9 694 2,692
Granite County 18.9 625 2,702
Mineral County 18.4 784 2,777
Lincoln County 18.2 3,558 2,818
Sanders County 17.8 2,081 2,867
Carbon County 17.7 1,878 2,881
Park County 17.6 2,879 2,894
Beaverhead County 17.6 1,654 2,897
Powder River County 16.2 261 3,021
Deer Lodge County 15.9 1,450 3,042
Treasure County 15.9 106 3,045
Madison County 15.3 1,273 3,068
Powell County 15.0 1,030 3,086
Golden Valley County 14.4 105 3,109
Notes:
Created by statecancerprofiles.cancer.gov on 10/20/2021 3:02 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.
Health Service Areas are a single county or cluster of contiguous counties which are relatively self-contained with respect to hospital care. For more detailed information, please see Health Service Area information page. Puerto Rico is being treated as a Health Service Area for this data presentation.
Data for United States does not include Puerto Rico.

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