State Cancer Profiles

Interpretation of Demographics Data

Demographic Data Report for South Dakota by County
Population: Age under 18
All Races (includes Hispanic), Both Sexes
2020-2024 American Community Survey 5-Year Data
Sorted by Percent

South Dakota

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Value (Percent) : The value is 24.2 percent.
• People (Age Under 18) : The number of people (age under 18) is 219,743.
• Rank within US : This county is ranked 4 of 52

United States

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Value (Percent) : The value is 22.0 percent.
• People (Age Under 18) : The number of people (age under 18) is 73,517,834.
• Rank within US : N/A

Buffalo County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 39.2 percent.
• People (Age Under 18) : The number of people (age under 18) is 708.
• Rank within US : This county is ranked 3 of 3143

Todd County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 38.8 percent.
• People (Age Under 18) : The number of people (age under 18) is 3,583.
• Rank within US : This county is ranked 4 of 3143

Dewey County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 38.3 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,996.
• Rank within US : This county is ranked 6 of 3143

Oglala Lakota County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 35.4 percent.
• People (Age Under 18) : The number of people (age under 18) is 4,777.
• Rank within US : This county is ranked 9 of 3143

Corson County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 35.3 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,345.
• Rank within US : This county is ranked 10 of 3143

Bennett County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 35.1 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,174.
• Rank within US : This county is ranked 12 of 3143

Hamlin County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 33.1 percent.
• People (Age Under 18) : The number of people (age under 18) is 2,111.
• Rank within US : This county is ranked 23 of 3143

Jackson County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 32.9 percent.
• People (Age Under 18) : The number of people (age under 18) is 923.
• Rank within US : This county is ranked 25 of 3143

Jones County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 31.8 percent.
• People (Age Under 18) : The number of people (age under 18) is 319.
• Rank within US : This county is ranked 34 of 3143

Charles Mix County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 30.7 percent.
• People (Age Under 18) : The number of people (age under 18) is 2,851.
• Rank within US : This county is ranked 57 of 3143

Clark County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 29.4 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,151.
• Rank within US : This county is ranked 89 of 3143

Hanson County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 28.7 percent.
• People (Age Under 18) : The number of people (age under 18) is 996.
• Rank within US : This county is ranked 109 of 3143

Mellette County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 28.7 percent.
• People (Age Under 18) : The number of people (age under 18) is 557.
• Rank within US : This county is ranked 109 of 3143

McCook County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 28.5 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,637.
• Rank within US : This county is ranked 114 of 3143

Roberts County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 28.2 percent.
• People (Age Under 18) : The number of people (age under 18) is 2,887.
• Rank within US : This county is ranked 126 of 3143

Beadle County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 28.0 percent.
• People (Age Under 18) : The number of people (age under 18) is 5,397.
• Rank within US : This county is ranked 132 of 3143

Lyman County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 28.0 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,043.
• Rank within US : This county is ranked 132 of 3143

Lincoln County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 26.5 percent.
• People (Age Under 18) : The number of people (age under 18) is 18,691.
• Rank within US : This county is ranked 215 of 3143

Hutchinson County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 26.4 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,957.
• Rank within US : This county is ranked 221 of 3143

Moody County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 26.3 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,682.
• Rank within US : This county is ranked 233 of 3143

Sanborn County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 25.9 percent.
• People (Age Under 18) : The number of people (age under 18) is 618.
• Rank within US : This county is ranked 269 of 3143

Aurora County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 25.5 percent.
• People (Age Under 18) : The number of people (age under 18) is 674.
• Rank within US : This county is ranked 321 of 3143

Douglas County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 25.5 percent.
• People (Age Under 18) : The number of people (age under 18) is 722.
• Rank within US : This county is ranked 321 of 3143

Minnehaha County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 25.4 percent.
• People (Age Under 18) : The number of people (age under 18) is 51,607.
• Rank within US : This county is ranked 340 of 3143

Hand County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 25.3 percent.
• People (Age Under 18) : The number of people (age under 18) is 794.
• Rank within US : This county is ranked 362 of 3143

Turner County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 25.3 percent.
• People (Age Under 18) : The number of people (age under 18) is 2,248.
• Rank within US : This county is ranked 362 of 3143

Ziebach County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 25.2 percent.
• People (Age Under 18) : The number of people (age under 18) is 600.
• Rank within US : This county is ranked 385 of 3143

Kingsbury County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 25.1 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,317.
• Rank within US : This county is ranked 410 of 3143

Faulk County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 25.0 percent.
• People (Age Under 18) : The number of people (age under 18) is 531.
• Rank within US : This county is ranked 435 of 3143

Butte County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 24.8 percent.
• People (Age Under 18) : The number of people (age under 18) is 2,647.
• Rank within US : This county is ranked 473 of 3143

Gregory County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 24.4 percent.
• People (Age Under 18) : The number of people (age under 18) is 979.
• Rank within US : This county is ranked 573 of 3143

Hughes County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 24.4 percent.
• People (Age Under 18) : The number of people (age under 18) is 4,312.
• Rank within US : This county is ranked 573 of 3143

Brule County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 24.3 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,283.
• Rank within US : This county is ranked 602 of 3143

Marshall County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 24.3 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,057.
• Rank within US : This county is ranked 602 of 3143

Deuel County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 24.2 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,048.
• Rank within US : This county is ranked 635 of 3143

Union County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 24.1 percent.
• People (Age Under 18) : The number of people (age under 18) is 4,108.
• Rank within US : This county is ranked 657 of 3143

Walworth County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 23.7 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,250.
• Rank within US : This county is ranked 778 of 3143

Brown County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 23.6 percent.
• People (Age Under 18) : The number of people (age under 18) is 8,948.
• Rank within US : This county is ranked 809 of 3143

Davison County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 23.6 percent.
• People (Age Under 18) : The number of people (age under 18) is 4,708.
• Rank within US : This county is ranked 809 of 3143

Edmunds County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 23.6 percent.
• People (Age Under 18) : The number of people (age under 18) is 956.
• Rank within US : This county is ranked 809 of 3143

Harding County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 23.3 percent.
• People (Age Under 18) : The number of people (age under 18) is 268.
• Rank within US : This county is ranked 926 of 3143

Tripp County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 23.2 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,299.
• Rank within US : This county is ranked 962 of 3143

Codington County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 23.0 percent.
• People (Age Under 18) : The number of people (age under 18) is 6,612.
• Rank within US : This county is ranked 1057 of 3143

Jerauld County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 22.8 percent.
• People (Age Under 18) : The number of people (age under 18) is 404.
• Rank within US : This county is ranked 1133 of 3143

Day County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 22.4 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,217.
• Rank within US : This county is ranked 1311 of 3143

Perkins County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 22.4 percent.
• People (Age Under 18) : The number of people (age under 18) is 671.
• Rank within US : This county is ranked 1311 of 3143

Grant County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 22.2 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,677.
• Rank within US : This county is ranked 1395 of 3143

Pennington County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 22.0 percent.
• People (Age Under 18) : The number of people (age under 18) is 24,975.
• Rank within US : This county is ranked 1478 of 3143

Sully County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 22.0 percent.
• People (Age Under 18) : The number of people (age under 18) is 336.
• Rank within US : This county is ranked 1478 of 3143

Miner County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 21.9 percent.
• People (Age Under 18) : The number of people (age under 18) is 504.
• Rank within US : This county is ranked 1525 of 3143

Meade County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 21.2 percent.
• People (Age Under 18) : The number of people (age under 18) is 6,476.
• Rank within US : This county is ranked 1816 of 3143

Stanley County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 21.2 percent.
• People (Age Under 18) : The number of people (age under 18) is 639.
• Rank within US : This county is ranked 1816 of 3143

Yankton County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 21.2 percent.
• People (Age Under 18) : The number of people (age under 18) is 4,974.
• Rank within US : This county is ranked 1816 of 3143

Brookings County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 21.1 percent.
• People (Age Under 18) : The number of people (age under 18) is 7,455.
• Rank within US : This county is ranked 1869 of 3143

Spink County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 21.1 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,313.
• Rank within US : This county is ranked 1869 of 3143

Campbell County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 20.8 percent.
• People (Age Under 18) : The number of people (age under 18) is 331.
• Rank within US : This county is ranked 1978 of 3143

Potter County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 20.4 percent.
• People (Age Under 18) : The number of people (age under 18) is 487.
• Rank within US : This county is ranked 2129 of 3143

Haakon County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 20.3 percent.
• People (Age Under 18) : The number of people (age under 18) is 350.
• Rank within US : This county is ranked 2158 of 3143

Lake County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 19.6 percent.
• People (Age Under 18) : The number of people (age under 18) is 2,146.
• Rank within US : This county is ranked 2372 of 3143

McPherson County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 19.3 percent.
• People (Age Under 18) : The number of people (age under 18) is 413.
• Rank within US : This county is ranked 2459 of 3143

Bon Homme County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 18.6 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,307.
• Rank within US : This county is ranked 2620 of 3143

Hyde County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 18.0 percent.
• People (Age Under 18) : The number of people (age under 18) is 214.
• Rank within US : This county is ranked 2719 of 3143

Clay County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 17.4 percent.
• People (Age Under 18) : The number of people (age under 18) is 2,645.
• Rank within US : This county is ranked 2833 of 3143

Lawrence County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 16.3 percent.
• People (Age Under 18) : The number of people (age under 18) is 4,435.
• Rank within US : This county is ranked 2950 of 3143

Fall River County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 16.2 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,178.
• Rank within US : This county is ranked 2956 of 3143

Custer County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 13.8 percent.
• People (Age Under 18) : The number of people (age under 18) is 1,225.
• Rank within US : This county is ranked 3096 of 3143

Notes:
Created by statecancerprofiles.cancer.gov on 03/30/2026 5:13 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 under 18, see the dictionary.

Data for United States does not include Puerto Rico.