RANKING · 1990 CENSUS · 18 SHOWN OF 18

Most sparsely populated, South Dakota cities · 1990

South Dakota cities with the fewest residents per square mile (1990). This list covers the 18 cities in South Dakota that qualify, ranked against each other statewide. The median across all 18 is 991.

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SAME RANKING BYCounties States Metros

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS –

01Harrisburg, SDSD10,405151–

02Box Elder, SDSD13,936182–

03Tea, SDSD8,019209–

04Spearfish, SDSD14,154404–

05Belle Fourche, SDSD5,791490–

06Sturgis, SDSD6,922830–

07Rapid Valley, SDSD6,975923–

08Watertown, SDSD23,736954–

09Rapid City, SDSD80,589990–

10Pierre, SDSD13,848991–

11Brookings, SDSD25,3551,166–

12Mitchell, SDSD15,7561,197–

13Sioux Falls, SDSD213,7481,219–

14Huron, SDSD14,6071,281–

15Madison, SDSD6,0651,356–

16Yankton, SDSD15,8161,460–

17Aberdeen, SDSD27,9611,509–

18Vermillion, SDSD11,7202,153–

SHOWING 1–18 OF 18

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS