17857 is zip code located in Northumberland, Pennsylvania. The population is 7,492, making 17857 the largest zipcode in Northumberland and the 6th largest in Northumberland County.
There are 2 public schools in 17857 with an average Homefacts rating of B-. The total crime rate for Northumberland is very low , and there are 14 registered sex offenders residing in the zip code 17857. Unemployment in 17857 is very high.