Seneca, Kansas

Seneca, Kansas
City and County seat
Post Office in Seneca (2021)
Location within Nemaha County and Kansas
KDOT map of Nemaha County (legend)
Coordinates: 39°50′17″N 96°04′11″W
Country	United States
State	Kansas
County	Nemaha
Founded	1857
Incorporated	1870
Named for	Seneca County, Ohio
Area
• Total	1.67 sq mi (4.32 km2)
• Land	1.67 sq mi (4.32 km2)
• Water	0 sq mi (0.00 km2)
Elevation	1,152 ft (351 m)
Population  (2020)
• Total	2,139
• Density	1,280/sq mi (495/km2)
Time zone	UTC-6 (CST)
• Summer (DST)	UTC-5 (CDT)
ZIP code	66538
Area code	785
FIPS code	20-63950
GNIS ID	485651
Website	senecakansas.com

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Seneca is a city in and the county seat of Nemaha County, Kansas, United States. As of the 2020 census, the population of the city was 2,139.