Nemaha County Official Website

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.

Cities in Nemaha County:

• Bern
• Centralia
• Corning
• Goff
• Oneida
• Sabetha
• Seneca (county seat)
• Wetmore