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| City | Seneca |
| State | Kansas (KS) |
| County | Nemaha |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 39.834165 |
| Longitude | -96.064168 |
| Population | 2,090 |
| Density | 461.8 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 66538 |
| Area Code | 913 |
| County Seat | Seneca |
| School District | Nemaha Unified School District 115 |
Seneca is a locality in Nemaha County, Kansas, United States. It has a population of approximately 2,090. The population density is 461.8 people per km². Seneca is located at 39.8342°N, 96.0642°W. It observes the Central Time (America/Chicago) timezone. ZIP code: 66538.
Seneca rests in the broad, sweeping embrace of Nemaha County, where the land rolls with a quiet dignity, a quilt of cultivated fields stitched together by the meandering silver threads of Elm Creek. It lies 52.5 miles north-north-east of Manhattan, KS (from Manhattan, KS: bearing 31°T), and is situated 8.2 miles north-north-east of Centralia. The sky here is a vast, ever-changing canvas, often a pale, washed blue in the morning, deepening to a rich indigo as dusk settles, painting the western horizon with hues of apricot and rose. The air, especially after a summer rain, carries the earthy scent of turned soil and the faint, sweet perfume of ripening corn, a fragrance that clings to the very fabric of the place. Roads, like thin brown ribbons, traverse the landscape, connecting farmsteads that seem to have sprouted organically from the earth, their white-painted barns and silos standing as stoic sentinels against the immensity of the prairie. The history of Seneca is deeply entwined with the agricultural heartland it inhabits, a testament to the resilience and hard work of generations who coaxed sustenance from this fertile ground. Founded in the mid-19th century, it grew along the tracks of the railroad, a vital artery that carried grain to distant markets and brought manufactured goods back to this burgeoning community. Today, the local economy still largely revolves around the bounty of the land, with farming and related industries forming the bedrock of its prosperity. Visitors might notice the sturdy, unpretentious architecture of its downtown buildings, reflecting a practical, no-nonsense character, and perhaps hear the distant rumble of a train, a sound that continues to echo the town's enduring connection to the wider world, a subtle reminder of Seneca's place in the grander narrative of the American heartland.
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This page provides an embedded street and satellite map of Seneca, Kansas — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 39.834165, -96.064168. 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 Seneca and Nemaha County.
Detailed location data for Seneca includes the ZIP code (66538), telephone area code (913), county seat of Nemaha County (Seneca), and school district assignment (Nemaha Unified School District 115). 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 Seneca 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. |