17866 is zip code located in Coal Township, Pennsylvania. The population is 10,372, making 17866 the largest zipcode in Coal Township and the 3rd largest in Northumberland County.
There are 5 public schools in 17866 with an average Homefacts rating of C. , and there are 3 registered sex offenders residing in the zip code 17866. Unemployment in 17866 is very high.
Zip codes within Coal Township include 17860.