56431 is zip code located in Aitkin, Minnesota. The population is 9,334, making 56431 the largest zipcode in Aitkin and the largest in Aitkin County.
There are 3 public schools in 56431 with an average Homefacts rating of C+. The total crime rate for Aitkin is low , and there are 0 registered sex offenders residing in the zip code 56431. Unemployment in 56431 is low.