58631 is zip code located in Glen Ullin, North Dakota. The population is 991, making 58631 the largest zipcode in Glen Ullin and the 4th largest in Morton County.
There are 2 public schools in 58631 with an average Homefacts rating of B-. , and there are 2 registered sex offenders residing in the zip code 58631. Unemployment in 58631 is low.