 nemaha county (standard abbreviation: nm) is a county located in the northeastern part of the u.s. state of kansas. as of the 2010 census, the county population was 10,178. the county seat is seneca. == history == the first railroad in nemaha county was built in 1866. on may 30, 1879, the "irving, kansas tornado" passed through nemaha county. this tornado measured f4 on the fujita scale, and had a damage path  wide and  long. eighteen people were killed and sixty were injured in this tornado. ==law and government== nemaha county was a prohibition, or "dry", county until the kansas constitution was amended in 1986 and voters approved the sale of alcoholic liquor by the individual drink with a 30% food sales requirement. ==geography== according to the u.s. census bureau, the county has a total area of , of which  is land and  (0.3%) is water. ===adjacent counties=== * richardson county, nebraska (northeast) * brown county (east) * jackson county (southeast) * pottawatomie county (southwest) * marshall county (west) * pawnee county, nebraska (northwest) ==demographics== {{uscensuspop |1860=2436 |1870=7339 |1880=124
1855_establishments_in_Kansas_Territory Kansas_counties Nemaha_County,_Kansas