62664 is zip code located in Mason City, Illinois. The population is 3,107, making 62664 the largest zipcode in Mason City and the 3rd largest in Mason County.
There are 4 public schools in 62664 with an average Homefacts rating of B-. The total crime rate for Mason City is moderate , and there are 0 registered sex offenders residing in the zip code 62664. Unemployment in 62664 is very high.