59866 is zip code located in St. Regis, Montana. The population is 1,037, making 59866 the largest zipcode in St. Regis and the 3rd largest in Mineral County.
There are 3 public schools in 59866 with an average Homefacts rating of B-. , and there are 2 registered sex offenders residing in the zip code 59866. Unemployment in 59866 is very high.