Seneca is located in Newton County, MO. The population is 2,168, making Seneca the 2nd largest city in Newton County.
There are 5 public schools in Seneca with an average Homefacts rating of B. The total crime rate for Seneca is low , and there are 26 registered sex offenders residing in the city. Unemployment in Seneca is low and the median home sales price is $0. Detailed and up-to-date Seneca property reports are available for any property address.
Cities near Seneca include Seneca Township, Peoria and Dayton Township.