18421 is zip code located in Forest City, Pennsylvania. The population is 4,444, making 18421 the largest zipcode in Forest City and the 3rd largest in Susquehanna County.
There are 2 public schools in 18421 with an average Homefacts rating of C+. The total crime rate for Forest City is very low , and there are 4 registered sex offenders residing in the zip code 18421. Unemployment in 18421 is moderate.