is an unincorporated community and a census-designated place in Baltimore County, Maryland, United States. The population was 51,793 at the 2000 census. It is the county seat of Baltimore County and the second-most populated unincorporated county seat in the United States (after Ellicott City, Maryland).
According to the United States Census Bureau, the CDP has a total area of 14.2 square miles (36.8 km²), of which, 14.0 square miles (36.4 km²) of it is land and 0.2 square miles (0.4 km²) of it (1.06%) is water.
The community is located immediately north of Baltimore City, inside the Beltway (I-695), east of I-83 and along York Road. Its census boundaries include Pikesville to the west, Lutherville-Timonium and Hampton to the north, Parkville to the east, and Baltimore to the south.
Major neighborhoods in Towson include: Anneslie, Idlewylde, Greenbriar, Southland Hills, Rodgers Forge, Stoneleigh, Wiltondale, Southland Hills, Hampton, Hunt Crest Estates, East Towson, and West Towson. Ruxton, which lies to the west, is sometimes considered a part of Towson. Eudowood is a Towson neighborhood named after Eudocia, the wife of Dr. John T. Stansbury - on whose former estate it is situated.