Marbury is an unincorporated community in Charles County, Maryland, United States. It has been designated the zip code of 20658. Marbury is located 6.3 miles from Indian Head on Maryland Route 224. Marbury was the point at which the tornado of April 28, 2002 touched down, before traveling east to demolish much of La Plata. Marbury is located at 38°34′31″N 77°09′21″W