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| City | St. Charles |
| State | South Dakota (SD) |
| County | Gregory |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 43.086943 |
| Longitude | -99.095373 |
| Population | 6 |
| Density | 14.5 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 57571 |
| Area Code | 605 |
| County Seat | Burke |
| School District | South Central School District 26-5 |
St. Charles is a locality in Gregory County, South Dakota, United States. It is a small community with a population of 6. The population density is 14.5 people per km². St. Charles is located at 43.0869°N, 99.0954°W. It observes the Central Time (America/Chicago) timezone. ZIP code: 57571.
St. Charles rests upon the rolling, sun-bleached plains of South Dakota, a place where the sky seems to possess an infinite reach. It lies 112.5 miles north-west of Norfolk, NE (from Norfolk, NE: bearing 311°T), and is situated 19.6 miles east-south-east of Gregory. The land here falls away in broad, sweeping curves, a gentle topography that hints at ancient, glacial sculpting. As the day wanes, the light takes on a honeyed quality, bathing the sparse homesteads and wind-scoured fields in a soft, ephemeral glow. The air, when it carries the scent of dry grass and distant cattle, is clean and vast, a palpable presence that seems to expand the lungs. This is a landscape of quiet endurance, where the elements dictate the rhythm of existence, and the horizon line is a constant, unbroken promise. The history of St. Charles is intrinsically tied to the agricultural heartland it inhabits. Early settlers, drawn by the promise of fertile soil and westward expansion, established homesteads that have, in many cases, remained in family hands for generations. The local economy, though modest, is sustained by the tireless work of those who cultivate the land, raising crops and livestock that feed the nation. While grand landmarks are absent, the distinctive character of St. Charles lies in its resilience, in the quiet strength of its people who have weathered droughts and economic shifts with a stoic pragmatism. The enduring presence of the land, the enduring spirit of its inhabitants, forms the unwritten narrative of St. Charles, a story told not in monuments, but in the steadfast continuity of life itself.
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This page provides an embedded street and satellite map of St. Charles, South Dakota — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 43.086943, -99.095373. 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 St. Charles and Gregory County.
Detailed location data for St. Charles includes the ZIP code (57571), telephone area code (605), county seat of Gregory County (Burke), and school district assignment (South Central School District 26-5). These are among the most commonly searched location details for any US city or town.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct St. Charles is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | July 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. |