Below is a list of Annapolis Junction MD zip codes. For your research we have also included Annapolis Junction Area Code, Time Zone, UTC and the local Howard County FIPS Code. Each Annapolis Junction Maryland zip code has a center Longitude / Latitude point (the Annapolis Junction center is -76.789703369141 / 39.125). For your convenience we have also indicated if that zip code in Annapolis Junction observes Daylight Savings time.