Below is a list of Marriottsville MD zip codes. For your research we have also included Marriottsville Area Code, Time Zone, UTC and the local Carroll County FIPS Code. Each Marriottsville Maryland zip code has a center Longitude / Latitude point (the Marriottsville center is -76.899398803711 / 39.350498199463). For your convenience we have also indicated if that zip code in Marriottsville observes Daylight Savings time.