Jefferson, South Dakota — interactive Google street map, satellite and terrain views, Street View, live National Weather Service conditions and 7-day forecasts, real-time local and world news, and an editorial description of Jefferson, Union County.
| City | Jefferson |
| State | South Dakota (SD) |
| County | Union |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 42.602495 |
| Longitude | -96.559199 |
| Population | 554 |
| Density | 542.3 /km² |
| Incorporated | N/A |
Jefferson is a locality in Union County, South Dakota, United States. It is a small community with a population of 554. The population density is 542.3 people per km². Jefferson is located at 42.6025°N, 96.5592°W. It observes the Central Time (America/Chicago) timezone. ZIP code: 57038.
Jefferson, South Dakota, lies where the rolling prairie begins to softly yield to the wide embrace of the Missouri River. It lies 10.8 miles north-west of Sioux City, IA (from Sioux City, IA: bearing 311°T), and is situated 8.8 miles north-north-west of Dakota Dunes. The land here is a study in subtle gradients, a vast canvas of cultivated fields that shimmer with the gold of ripening corn and the deep green of soybeans under an immense sky. The air, especially in the quiet hours of dawn, carries a faint, clean scent of damp earth and distant, blooming wildflowers, a fragrance that seems to settle over the scattered farmsteads and the unassuming heart of Jefferson itself. There are no dramatic peaks or deep valleys to command the eye, only the steady, patient architecture of the land, shaped by wind and water into a landscape that feels both timeless and intimately present. The history of Jefferson is tied to the very water that defines its eastern edge, the mighty Missouri, a artery that once pulsed with steamboat traffic and the dreams of westward expansion. Early settlers, drawn by the fertile bottomlands, established a community that learned to live with the river's moods, its generous floods and its sometimes grudging recession. The economy, once reliant on agriculture and the river's trade, now finds its pulse in the surrounding farmlands, with grain elevators standing as silent sentinels to the harvest. Though Jefferson is small, its connection to the broader currents of American history is undeniable, a quiet testament to the enduring spirit of those who chose to make their lives on these fertile, wind-swept plains.
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This page provides an interactive Google map of Jefferson, South Dakota with street, satellite and terrain views and integrated Street View imagery. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on Jefferson and Union County. Coordinates and population data are also included.
Location data for Jefferson is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity, not name matching alone — ensuring the correct Jefferson is identified even where the name is shared across multiple counties or states.
| Page generated | June 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |