04259 is zip code located in Monmouth, Maine. The population is 3,299, making 04259 the largest zipcode in Monmouth and the 10th largest in Kennebec County.
There are 3 public schools in 04259 with an average Homefacts rating of D+. The total crime rate for Monmouth is very low , and there are 6 registered sex offenders residing in the zip code 04259. Unemployment in 04259 is low.