ZIP Code 57001
About Alcester
Alcester is a city in northern Union County, South Dakota, United States. It is part of the Sioux City, IA–NE–SD Metropolitan Statistical Area. The population was 820 at the 2020 census.
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Area Profile
US Census (ACS 5-year · Gazetteer)
1,550
population
$72,885
median household income
16
people / sq mi
$158,600
median home value
$821
median gross rent
47.3
median age
663
housing units
636
households
99.3
land area (sq mi)