A town of 554. Healthier than 76% of U.S. towns.
The thing Jefferson does most differently from other towns.
In a town this size, neighbors are the best guide. Ask them anything.
Be the first to start the conversation.
Nothing on the calendar.
Ordered by what stands out in Jefferson. Another town gets a different order.
Expected storm and flood damage is higher than in 82% of U.S. communities.
Jefferson tracks South Dakota closely on all 26 CDC measures.
Most working residents leave Jefferson for work: only 1% work in town. The top destinations are North Sioux City (20%), Sioux City (15%) and Dakota Dunes (15%). Half commute less than 9 miles.
Jefferson has cold, snowy winters and warm summers. A typical July afternoon reaches 86°, a January night drops to 10°, and about 36 inches of snow falls in a normal winter.
3 crimes were reported in Jefferson in 2024: 3 property and 0 violent. In a town this small, a few incidents move the numbers a lot, so rates aren't shown.
Jefferson is small, so we show counts rather than rates.
0.0 miles of trails across 1 parks and preserves.
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Jefferson Park | — | 1 |
The median sale price was $118,000 in February 2026.
Where Jefferson’s working residents go each day. Line width shows the share.
Census LEHD 2023
2 postcards, papers and photographs from public archives, and 1 places on the National Register.
City in South Dakota, United States
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. The city has the name of President Thomas Jefferson.
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