17851 is zip code located in Mount Carmel, Pennsylvania. The population is 7,833, making 17851 the largest zipcode in Mount Carmel and the 5th largest in Northumberland County.
There are 3 public schools in 17851 with an average Homefacts rating of C. , and there are 18 registered sex offenders residing in the zip code 17851. Unemployment in 17851 is very high.