RANKING · 2020 CENSUS · 19 SHOWN OF 19

Oldest by median age, South Dakota cities · 2020

South Dakota cities ranked by median age of residents (2020 ACS). This list covers the 19 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 2000

01Sturgis, SDSD6,92242.5+7%

02Yankton, SDSD15,81640.6+8%

03Belle Fourche, SDSD5,79138.6+2%

04Mitchell, SDSD15,75638.5+8%

05Pierre, SDSD13,84838.5+2%

06Watertown, SDSD23,73638.1+9%

07Rapid City, SDSD80,58937.4+7%

08Rapid Valley, SDSD6,97537.4+23%

09Spearfish, SDSD14,15436.7+16%

10Aberdeen, SDSD27,96136.4−0%

11Brandon, SDSD11,30635.4+13%

12Sioux Falls, SDSD213,74835.3+7%

13Huron, SDSD14,60734.9−13%

14Madison, SDSD6,06534.5+4%

15Tea, SDSD8,01929.7+5%

16Harrisburg, SDSD10,40529.1−3%

17Box Elder, SDSD13,93627.8+6%

18Brookings, SDSD25,35526.3+12%

19Vermillion, SDSD11,72023.0−4%

SHOWING 1–19 OF 19

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS