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Seneca, South Dakota
Town · Population 23 · #294 in South Dakota
tiny community🌐 seneca-sd.uscitysearch.com
About Seneca
Seneca is a tiny community in northern South Dakota, home to 23 residents as of the latest Census estimates.
Officially, Seneca is an incorporated town — local government on a neighborly scale. The community covers 0.42 square miles, giving it wide-open spaces and a spread-out, rural feel at roughly 55 residents per square mile.
📰 Seneca News Today
- Jeffery Bryant | 1961 – 2026 DRGNews · Aug 14
- Extreme damage from 131 mph wind brings governor and state response to Highmore South Dakota Searchlight · Jun 29
- Light & Wonder renews agreements with properties in New York, South Dakota CDC Gaming · Mar 29
- Frieda D. Ellis Obituary Mar 9, 2013 Ottawa funeral home | Ottawa, IL · May 10
- Iowa State football report card from 2025 home opener win vs South Dakota The Des Moines Register · Aug 30
Live headlines via Google News — updates through the day.
What Makes Seneca Unique
- One of 9 places in the US named Seneca — but the South Dakota one has a character all its own.
- With 23 residents, it's one of America's smallest incorporated communities — everybody really does know everybody.
- Positioned in northern South Dakota, convenient to the region's corridors and crossings.
Why People Love It Here
- A tight community feel that bigger cities can't replicate.
- Housing dollars stretch further here than in the nearest metro.
- Well connected: 3+ neighboring communities within 13 miles.
⚡ Quick Facts
StateSouth Dakota
TypeTown
Population (2024)23
Rank in state#294 of 310
Land area0.42 sq mi
Density55/sq mi
Coordinates45.0608, -99.5092