Joppa is a former town and current planning region of Harford County, Maryland. Joppa was founded as a British colonial settlement in the early 18th century, and takes its name from the biblical town of Joppa (Jaffa, Israel).
The town of Joppa on the Gunpowder River traded internationally in agricultural products, especially tobacco. At its peak, the port was home to about 50 homes, a church, prison, inns, shops, schools, armament factories, and warehouses. However, with the rise of Baltimore and Annapolis, Joppa declined as a port, and was slowly abandoned. By 1815, all that remained were ruins, and the surviving Rumsey Mansion.
In 1962, Joppatowne, one of the first of a new generation of planned unit developments (PUD) in the United States, was launched by the Panitz Company.
Joppa is now the location of the large film sound-stages used for interior scenes of the US television series House of Cards, with sets including the full-scale reconstruction of the West Wing of the White House and Congressional offices.