State Cancer Profiles

Interpretation of Demographics Data

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

Montana

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Value (Percent) : The value is 28.4 percent.
• People (Age 18-39) : The number of people (age 18-39) is 317,293.
• Rank within US : This county is ranked 38 of 52

United States

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Value (Percent) : The value is 29.5 percent.
• People (Age 18-39) : The number of people (age 18-39) is 98,945,767.
• Rank within US : N/A

Petroleum County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 16.6 percent.
• People (Age 18-39) : The number of people (age 18-39) is 74.
• Rank within US : This county is ranked 3108 of 3143

Meagher County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 17.4 percent.
• People (Age 18-39) : The number of people (age 18-39) is 350.
• Rank within US : This county is ranked 3086 of 3143

Sanders County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 17.5 percent.
• People (Age 18-39) : The number of people (age 18-39) is 2,326.
• Rank within US : This county is ranked 3082 of 3143

Phillips County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 18.0 percent.
• People (Age 18-39) : The number of people (age 18-39) is 760.
• Rank within US : This county is ranked 3068 of 3143

Carter County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 18.2 percent.
• People (Age 18-39) : The number of people (age 18-39) is 238.
• Rank within US : This county is ranked 3055 of 3143

Granite County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 18.2 percent.
• People (Age 18-39) : The number of people (age 18-39) is 630.
• Rank within US : This county is ranked 3055 of 3143

Lincoln County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 18.3 percent.
• People (Age 18-39) : The number of people (age 18-39) is 3,868.
• Rank within US : This county is ranked 3049 of 3143

Prairie County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 18.5 percent.
• People (Age 18-39) : The number of people (age 18-39) is 231.
• Rank within US : This county is ranked 3042 of 3143

Musselshell County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 18.7 percent.
• People (Age 18-39) : The number of people (age 18-39) is 962.
• Rank within US : This county is ranked 3034 of 3143

Daniels County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 18.9 percent.
• People (Age 18-39) : The number of people (age 18-39) is 282.
• Rank within US : This county is ranked 3026 of 3143

McCone County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 19.0 percent.
• People (Age 18-39) : The number of people (age 18-39) is 318.
• Rank within US : This county is ranked 3020 of 3143

Wibaux County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 19.2 percent.
• People (Age 18-39) : The number of people (age 18-39) is 229.
• Rank within US : This county is ranked 3013 of 3143

Judith Basin County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 20.0 percent.
• People (Age 18-39) : The number of people (age 18-39) is 415.
• Rank within US : This county is ranked 2964 of 3143

Madison County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 20.4 percent.
• People (Age 18-39) : The number of people (age 18-39) is 1,882.
• Rank within US : This county is ranked 2927 of 3143

Mineral County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 20.8 percent.
• People (Age 18-39) : The number of people (age 18-39) is 1,032.
• Rank within US : This county is ranked 2889 of 3143

Stillwater County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 21.1 percent.
• People (Age 18-39) : The number of people (age 18-39) is 1,934.
• Rank within US : This county is ranked 2837 of 3143

Carbon County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 21.4 percent.
• People (Age 18-39) : The number of people (age 18-39) is 2,375.
• Rank within US : This county is ranked 2803 of 3143

Garfield County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 21.5 percent.
• People (Age 18-39) : The number of people (age 18-39) is 235.
• Rank within US : This county is ranked 2787 of 3143

Ravalli County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 21.5 percent.
• People (Age 18-39) : The number of people (age 18-39) is 10,035.
• Rank within US : This county is ranked 2787 of 3143

Broadwater County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 21.8 percent.
• People (Age 18-39) : The number of people (age 18-39) is 1,672.
• Rank within US : This county is ranked 2742 of 3143

Powder River County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 22.2 percent.
• People (Age 18-39) : The number of people (age 18-39) is 403.
• Rank within US : This county is ranked 2667 of 3143

Treasure County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 22.4 percent.
• People (Age 18-39) : The number of people (age 18-39) is 164.
• Rank within US : This county is ranked 2634 of 3143

Teton County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 22.5 percent.
• People (Age 18-39) : The number of people (age 18-39) is 1,430.
• Rank within US : This county is ranked 2613 of 3143

Wheatland County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 22.5 percent.
• People (Age 18-39) : The number of people (age 18-39) is 462.
• Rank within US : This county is ranked 2613 of 3143

Jefferson County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 22.6 percent.
• People (Age 18-39) : The number of people (age 18-39) is 2,888.
• Rank within US : This county is ranked 2590 of 3143

Valley County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 22.6 percent.
• People (Age 18-39) : The number of people (age 18-39) is 1,698.
• Rank within US : This county is ranked 2590 of 3143

Sweet Grass County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 22.8 percent.
• People (Age 18-39) : The number of people (age 18-39) is 848.
• Rank within US : This county is ranked 2538 of 3143

Golden Valley County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 22.9 percent.
• People (Age 18-39) : The number of people (age 18-39) is 206.
• Rank within US : This county is ranked 2508 of 3143

Lake County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 23.2 percent.
• People (Age 18-39) : The number of people (age 18-39) is 7,562.
• Rank within US : This county is ranked 2438 of 3143

Liberty County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 23.3 percent.
• People (Age 18-39) : The number of people (age 18-39) is 455.
• Rank within US : This county is ranked 2400 of 3143

Sheridan County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 23.6 percent.
• People (Age 18-39) : The number of people (age 18-39) is 866.
• Rank within US : This county is ranked 2311 of 3143

Fergus County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 24.2 percent.
• People (Age 18-39) : The number of people (age 18-39) is 2,830.
• Rank within US : This county is ranked 2138 of 3143

Pondera County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 24.3 percent.
• People (Age 18-39) : The number of people (age 18-39) is 1,468.
• Rank within US : This county is ranked 2109 of 3143

Park County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 24.5 percent.
• People (Age 18-39) : The number of people (age 18-39) is 4,342.
• Rank within US : This county is ranked 2046 of 3143

Rosebud County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 24.5 percent.
• People (Age 18-39) : The number of people (age 18-39) is 1,999.
• Rank within US : This county is ranked 2046 of 3143

Flathead County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 25.1 percent.
• People (Age 18-39) : The number of people (age 18-39) is 27,821.
• Rank within US : This county is ranked 1836 of 3143

Chouteau County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 25.5 percent.
• People (Age 18-39) : The number of people (age 18-39) is 1,504.
• Rank within US : This county is ranked 1660 of 3143

Custer County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 25.5 percent.
• People (Age 18-39) : The number of people (age 18-39) is 3,054.
• Rank within US : This county is ranked 1660 of 3143

Deer Lodge County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 26.1 percent.
• People (Age 18-39) : The number of people (age 18-39) is 2,506.
• Rank within US : This county is ranked 1451 of 3143

Lewis and Clark County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 26.3 percent.
• People (Age 18-39) : The number of people (age 18-39) is 19,356.
• Rank within US : This county is ranked 1375 of 3143

Dawson County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 26.5 percent.
• People (Age 18-39) : The number of people (age 18-39) is 2,341.
• Rank within US : This county is ranked 1298 of 3143

Blaine County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 26.8 percent.
• People (Age 18-39) : The number of people (age 18-39) is 1,859.
• Rank within US : This county is ranked 1196 of 3143

Richland County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 27.0 percent.
• People (Age 18-39) : The number of people (age 18-39) is 3,037.
• Rank within US : This county is ranked 1142 of 3143

Big Horn County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 27.7 percent.
• People (Age 18-39) : The number of people (age 18-39) is 3,568.
• Rank within US : This county is ranked 935 of 3143

Yellowstone County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 28.3 percent.
• People (Age 18-39) : The number of people (age 18-39) is 47,825.
• Rank within US : This county is ranked 808 of 3143

Hill County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 28.5 percent.
• People (Age 18-39) : The number of people (age 18-39) is 4,608.
• Rank within US : This county is ranked 761 of 3143

Powell County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 28.6 percent.
• People (Age 18-39) : The number of people (age 18-39) is 2,014.
• Rank within US : This county is ranked 738 of 3143

Glacier County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 28.8 percent.
• People (Age 18-39) : The number of people (age 18-39) is 3,928.
• Rank within US : This county is ranked 703 of 3143

Cascade County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 29.2 percent.
• People (Age 18-39) : The number of people (age 18-39) is 24,665.
• Rank within US : This county is ranked 615 of 3143

Silver Bow County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 29.3 percent.
• People (Age 18-39) : The number of people (age 18-39) is 10,477.
• Rank within US : This county is ranked 594 of 3143

Fallon County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 29.4 percent.
• People (Age 18-39) : The number of people (age 18-39) is 812.
• Rank within US : This county is ranked 567 of 3143

Beaverhead County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 29.7 percent.
• People (Age 18-39) : The number of people (age 18-39) is 2,882.
• Rank within US : This county is ranked 525 of 3143

Roosevelt County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 30.2 percent.
• People (Age 18-39) : The number of people (age 18-39) is 3,175.
• Rank within US : This county is ranked 458 of 3143

Toole County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 30.4 percent.
• People (Age 18-39) : The number of people (age 18-39) is 1,538.
• Rank within US : This county is ranked 436 of 3143

Missoula County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 36.1 percent.
• People (Age 18-39) : The number of people (age 18-39) is 43,613.
• Rank within US : This county is ranked 118 of 3143

Gallatin County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 39.7 percent.
• People (Age 18-39) : The number of people (age 18-39) is 49,241.
• Rank within US : This county is ranked 62 of 3143

Notes:
Created by statecancerprofiles.cancer.gov on 03/22/2026 7:06 pm.

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.