Below is a list of Upper Marlboro MD zip codes. For your research we have also included Upper Marlboro Area Code, Time Zone, UTC and the local Prince Georges County FIPS Code. Each Upper Marlboro Maryland zip code has a center Longitude / Latitude point (the Upper Marlboro center is -76.751899719238 / 38.816299438477). For your convenience we have also indicated if that zip code in Upper Marlboro observes Daylight Savings time.