57646 is zip code located in Mound City, South Dakota. The population is 188, making 57646 the largest zipcode in Mound City and the 3rd largest in Campbell County.
There are 0 public schools in 57646 with an average Homefacts rating of NA. , and there are 0 registered sex offenders residing in the zip code 57646. Unemployment in 57646 is low.