Londontowne is an unincorporated area and former census-designated place (CDP) in Anne Arundel County, Maryland, United States, and the site of a former colonial seaport founded on the South River in 1683. The population was 7,595 at the 2000 census. At the 2010 census, the area was delineated as the Edgewater CDP.

Annapolis is the capital of the state of Maryland. It is the county seat of Anne Arundel County and its only incorporated city. Situated on the Chesapeake Bay at the mouth of the Severn River, 25 miles (40 km) south of Baltimore and about 30 miles (50 km) east of Washington, D.C., Annapolis forms part of the Baltimore–Washington metropolitan area. The 2020 census recorded its population as 40,812, an increase of 6.3% since 2010.