South Dakota Union County

Jefferson

A city in Union County, South Dakota — population 515 as of 2020.

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Today 78°F Mostly Cloudy then Slight Chance Rain Showers16% precip
Tonight 61°F Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms59% precip
Monday 78°F Chance Showers And Thunderstorms then Mostly Cloudy48% precip
Monday Night 64°F Mostly Cloudy then Slight Chance Rain Showers15% precip

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Jefferson by the numbers

Population 515Population figure, 2020
Households & income
Area
0.51 sq mi (1.32 km²)
Median age
40.6
Households
255
Persons per household
2.2
Median household income
$82,888
Median house value
$179,400
2020–2024 ACS
Municipal office
Office
MAYOR
Address
PO BOX 276, JEFFERSON, SD 57038
Municipal record
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