Demographics Table
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
|
2023 Rural-Urban Continuum Codes Φ
|
Value (Percent)
|
People (Age Under 18)
|
Rank within US (of 3143 counties)
|
|---|---|---|---|---|
| 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 07/14/2025 8:01 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.
Created by statecancerprofiles.cancer.gov on 07/14/2025 8:01 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.