Gambrills is an unincorporated town in Anne Arundel County, Maryland and has a population of 1,759 as recorded in the last census in 2000. There has been tremendous buildup in recent years during the real estate boom. The population may have increased dramatically. Its ZIP Code is 21054. Gambrills is in Anne Arundel County, in the Baltimore metro area. The community was named for Augustine Gambrill, plantation owner. The latitude of Gambrills is 39.066N. The longitude is -76.665W. It is in the Eastern Standard time zone. Elevation is 154 feet.