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.
Jail and sheriff residence in Seneca (2015)
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.
Post Office in Seneca (2021)
Nemaha County Historical Society (previously a Jail and Sheriff residence) (2015)
Saints Peter and Paul Catholic Church (1916)