57312 is zip code located in Alpena, South Dakota. The population is 441, making 57312 the largest zipcode in Alpena and the 2nd largest in Jerauld County.
There are 0 public schools in 57312 with an average Homefacts rating of NA. , and there are 2 registered sex offenders residing in the zip code 57312. Unemployment in 57312 is low.