Below is a list of Monessen PA zip codes. For your research we have also included Monessen Area Code, Time Zone, UTC and the local Westmoreland County FIPS Code. Each Monessen Pennsylvania zip code has a center Longitude / Latitude point (the Monessen center is -79.879600524902 / 40.151699066162). For your convenience we have also indicated if that zip code in Monessen observes Daylight Savings time.