Nemaha County, Kansas

Nemaha County
Location within the U.S. state of Kansas
Kansas's location within the U.S.
Coordinates: 39°48′N 96°01′W / 39.800°N 96.017°W / 39.800; -96.017
Country United States
State Kansas
FoundedAugust 25, 1855
Named afterNemaha River
SeatSeneca
Largest citySabetha
Area
  Total
719 sq mi (1,860 km2)
  Land717 sq mi (1,860 km2)
  Water2.0 sq mi (5 km2)  0.3%
Population
 (2020)
  Total
10,273
  Estimate 
(2023)
10,114
  Density14/sq mi (5.5/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Area code785
Congressional district2nd
Websitenmcoks.us

Nemaha County is a county located in the northeastern part of the U.S. state of Kansas. Its county seat is Seneca. As of the 2020 census, the county population was 10,273. The county was named for the Nemaha River.