ZIP Code 57038
About Jefferson
Jefferson is a city in Union County, South Dakota, United States. The population was 475 at the 2020 census. It is part of the Sioux City, IA-NE-SD Metropolitan Statistical Area. Jefferson was founded in 1859. Every year the citizens of Jefferson and surrounding area celebrate the founding of Jefferson during "Jefferson Days", a festival that includes a movie in the park, a car show, fireworks and parade.
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Area Profile
US Census (ACS 5-year · Gazetteer)
1,713
population
$86,895
median household income
34
people / sq mi
$280,900
median home value
$906
median gross rent
43.0
median age
765
housing units
755
households
50.6
land area (sq mi)