RANKING · 1990 CENSUS · 18 SHOWN OF 18

Youngest by median age, South Dakota cities · 1990

South Dakota cities with the youngest median age (1990 ACS). This list covers the 18 cities in South Dakota that qualify, ranked against each other statewide.

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SAME RANKING BYCounties States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS –

01Vermillion, SDSD11,72022.5–

02Brookings, SDSD25,35523.8–

03Box Elder, SDSD13,93624.0–

04Tea, SDSD8,01927.1–

05Harrisburg, SDSD10,40527.5–

06Rapid Valley, SDSD6,97527.7–

07Spearfish, SDSD14,15430.7–

08Rapid City, SDSD80,58930.9–

09Sioux Falls, SDSD213,74831.3–

10Aberdeen, SDSD27,96132.5–

11Watertown, SDSD23,73632.8–

12Pierre, SDSD13,84833.0–

13Mitchell, SDSD15,75633.7–

14Yankton, SDSD15,81633.9–

15Madison, SDSD6,06533.9–

16Belle Fourche, SDSD5,79134.4–

17Huron, SDSD14,60736.0–

18Sturgis, SDSD6,92237.9–

SHOWING 1–18 OF 18

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS