Demographics Table
Demographic Data Report for Montana by County
Population: Age 18-39
All Races (includes Hispanic), Both Sexes
2020-2024 American Community Survey 5-Year Data
Sorted by Percent
County
|
2023 Rural-Urban Continuum Codes Φ
|
Value (Percent)
|
People (Age 18-39)
|
Rank within US (of 3143 counties)
|
|---|---|---|---|---|
| Montana | N/A | 28.4 | 317,293 | 38 of 52 |
| United States | N/A | 29.5 | 98,945,767 | N/A |
| Petroleum County | Rural | 16.6 | 74 | 3,108 |
| Meagher County | Rural | 17.4 | 350 | 3,086 |
| Sanders County | Rural | 17.5 | 2,326 | 3,082 |
| Phillips County | Rural | 18.0 | 760 | 3,068 |
| Carter County | Rural | 18.2 | 238 | 3,055 |
| Granite County | Rural | 18.2 | 630 | 3,055 |
| Lincoln County | Rural | 18.3 | 3,868 | 3,049 |
| Prairie County | Rural | 18.5 | 231 | 3,042 |
| Musselshell County | Rural | 18.7 | 962 | 3,034 |
| Daniels County | Rural | 18.9 | 282 | 3,026 |
| McCone County | Rural | 19.0 | 318 | 3,020 |
| Wibaux County | Rural | 19.2 | 229 | 3,013 |
| Judith Basin County | Rural | 20.0 | 415 | 2,964 |
| Madison County | Rural | 20.4 | 1,882 | 2,927 |
| Mineral County | Urban | 20.8 | 1,032 | 2,889 |
| Stillwater County | Urban | 21.1 | 1,934 | 2,837 |
| Carbon County | Urban | 21.4 | 2,375 | 2,803 |
| Garfield County | Rural | 21.5 | 235 | 2,787 |
| Ravalli County | Rural | 21.5 | 10,035 | 2,787 |
| Broadwater County | Urban | 21.8 | 1,672 | 2,742 |
| Powder River County | Rural | 22.2 | 403 | 2,667 |
| Treasure County | Rural | 22.4 | 164 | 2,634 |
| Teton County | Rural | 22.5 | 1,430 | 2,613 |
| Wheatland County | Rural | 22.5 | 462 | 2,613 |
| Jefferson County | Urban | 22.6 | 2,888 | 2,590 |
| Valley County | Rural | 22.6 | 1,698 | 2,590 |
| Sweet Grass County | Rural | 22.8 | 848 | 2,538 |
| Golden Valley County | Rural | 22.9 | 206 | 2,508 |
| Lake County | Rural | 23.2 | 7,562 | 2,438 |
| Liberty County | Rural | 23.3 | 455 | 2,400 |
| Sheridan County | Rural | 23.6 | 866 | 2,311 |
| Fergus County | Rural | 24.2 | 2,830 | 2,138 |
| Pondera County | Rural | 24.3 | 1,468 | 2,109 |
| Park County | Rural | 24.5 | 4,342 | 2,046 |
| Rosebud County | Rural | 24.5 | 1,999 | 2,046 |
| Flathead County | Rural | 25.1 | 27,821 | 1,836 |
| Chouteau County | Rural | 25.5 | 1,504 | 1,660 |
| Custer County | Rural | 25.5 | 3,054 | 1,660 |
| Deer Lodge County | Rural | 26.1 | 2,506 | 1,451 |
| Lewis and Clark County | Urban | 26.3 | 19,356 | 1,375 |
| Dawson County | Rural | 26.5 | 2,341 | 1,298 |
| Blaine County | Rural | 26.8 | 1,859 | 1,196 |
| Richland County | Rural | 27.0 | 3,037 | 1,142 |
| Big Horn County | Rural | 27.7 | 3,568 | 935 |
| Yellowstone County | Urban | 28.3 | 47,825 | 808 |
| Hill County | Rural | 28.5 | 4,608 | 761 |
| Powell County | Rural | 28.6 | 2,014 | 738 |
| Glacier County | Rural | 28.8 | 3,928 | 703 |
| Cascade County | Urban | 29.2 | 24,665 | 615 |
| Silver Bow County | Rural | 29.3 | 10,477 | 594 |
| Fallon County | Rural | 29.4 | 812 | 567 |
| Beaverhead County | Rural | 29.7 | 2,882 | 525 |
| Roosevelt County | Rural | 30.2 | 3,175 | 458 |
| Toole County | Rural | 30.4 | 1,538 | 436 |
| Missoula County | Urban | 36.1 | 43,613 | 118 |
| Gallatin County | Urban | 39.7 | 49,241 | 62 |
Notes:
Created by statecancerprofiles.cancer.gov on 03/22/2026 3:13 am.
Φ Rural–urban county classifications are based on the 2023 USDA Rural–Urban Continuum Codes (except for Connecticut Counties which use 2013 codes). State-level cancer rates for rural areas are calculated using cancer cases registered exclusively in rural counties, while state-level cancer rates for urban areas are calculated using cases registered exclusively in urban counties.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age 18-39, see the dictionary.
Data for United States does not include Puerto Rico.