Seneca is located in Faulk County, SD. The population is 83, making Seneca the 7th largest city in Faulk County.
There are 0 public schools in Seneca with an average Homefacts rating of NA. , and there are 0 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 Southwest Faulk, ONeil Township and Sherman Township.