18331 is zip code located in Chestnuthill Township, Pennsylvania. The population is 1,191, making 18331 the 2nd largest zipcode in Chestnuthill Township.
There are 0 public schools in 18331 with an average Homefacts rating of NA. , and there are 0 registered sex offenders residing in the zip code 18331. Unemployment in 18331 is high.
Zip codes within Chestnuthill Township include 18334 and 18352.