49781 is zip code located in St. Ignace, Michigan. The population is 4,383, making 49781 the largest zipcode in St. Ignace and the largest in Mackinac County.
There are 4 public schools in 49781 with an average Homefacts rating of B-. The total crime rate for St. Ignace is very low , and there are 13 registered sex offenders residing in the zip code 49781. Unemployment in 49781 is low.