Hanover, Maryland is an unincorporated community in the Baltimore/Annapolis area in northwestern Anne Arundel County, Maryland and eastern Howard County, Maryland in the United States, located south of Baltimore on the Howard County line. It is located approximately at the intersection of Maryland State Highway 100 and the Baltimore-Washington Parkway. It is part of the Baltimore-Washington Metropolitan Area and is located just southwest of the Baltimore-Washington International Thurgood Marshall Airport (commonly known as "BWI"). It is bordered by Severn to the south, Linthicum to the east, Baltimore to the northeast, Ft. Meade to the west, and Columbia to the north.
In the past, the community also consisted of "Anderson", a post office stop founded along the B&O tracks from 1874–1881 along modern Anderson Avenue, and operated as "Hanoverville" until December 1896. Hanover is located along the fall line where the ocean met the shore in prehistoric times. Native American tribes lived along the lower Patapsco river. Archeological digs in 1929 have discovered arrowheads, spearpoints, axes, and gorgets along the Disney farm. The area is now occupied by commercial buildings along Hi Tech drive and Oxford Square development.
Arundel Mills mall opened in November 2000. Since then, the area has seen explosive growth; shopping centers and housing developments have popped up along Arundel Mills Boulevard (Route 713), which links the B-W Parkway and Route 100 to Arundel Mills. In August 2010, Preston Partners sought to rezone a failed commercial project on the historic Disney farm into a transit-oriented development funded by Magic Johnson. On November 2, 2010, Anne Arundel County voters approved zoning for a gaming and entertainment complex with 4,750 slot machines at Arundel Mills Mall. This casino complex opened as Maryland Live! in June 2012. The Maryland Department of Transportation is headquartered at 7201 Corporate Center Drive, which has a Hanover address.