Seneca is a town in Faulk County, South Dakota, home to about 22 people across 0.4 square miles. It has no ZIP code of its own: it’s part of 57473.
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| Nearest major airport | Eppley Airfield (OMA)314 miles away |
|---|---|
| Closer regional airport | Aberdeen Regional Airport (ABR)58 miles away |
| Nearest city of 250,000+ | Omaha, NE311 miles away |
| Nearest city of 1 million+ | Chicago, IL630 miles away |
Straight-line distances from the center of Seneca; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Seneca had 22 residents in the 2020 census, down 62% since 2000.
It’s the 405th largest of 440 towns in South Dakota by population.
Faulk County grew from 3,547 residents in 1900 to 2,125 in 2020.
Faulk County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 85°F in summer, and winter lows average 5°F. About 21 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Highmore 23 N, SD weather station (13 miles away).
412 jobs at 64 businesses in Faulk County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.