15666 is zip code located in Mount Pleasant, Pennsylvania. The population is 16,497, making 15666 the largest zipcode in Mount Pleasant and the 6th largest in Westmoreland County.
There are 5 public schools in 15666 with an average Homefacts rating of B. , and there are 31 registered sex offenders residing in the zip code 15666. Unemployment in 15666 is very high.