King of Prussia, Pennsylvania

King of Prussia, Pennsylvania
Main Street at King of Prussia Town Center
KOP sign
King of Prussia mall
King of Prussia Inn, a local tavern
Valley Forge Casino Resort
Nickname: 
KOP
King of Prussia
Location of King of Prussia in Pennsylvania
King of Prussia
King of Prussia (the United States)
Coordinates: 40°05′21″N 75°23′46″W / 40.08917°N 75.39611°W / 40.08917; -75.39611
CountryUnited States
StatePennsylvania
CountyMontgomery
TownshipUpper Merion
Founded1719
Named afterKing of Prussia Inn
Area
 • Total
8.66 sq mi (22.44 km2)
 • Land8.49 sq mi (22.00 km2)
 • Water0.17 sq mi (0.44 km2)
Elevation
200 ft (60 m)
Population
 • Total
24,695
 • Density2,907.00/sq mi (1,122.43/km2)
Time zoneUTC-5 (Eastern (EST))
 • Summer (DST)UTC-4 (EDT)
ZIP Code
19406
Area codes610 and 484
GNIS feature ID1178473[3]

King of Prussia (nicknamed K.O.P.)[4] is a census-designated place in Upper Merion Township in Montgomery County, Pennsylvania, United States. The community took its unusual name in the 18th century from a local tavern named the King of Prussia Inn, which was named after King Frederick the Great of Prussia. As of the 2020 census, its population was 24,695.

Located 35 miles (56 km) south of Allentown and 15 miles (24 km) northwest of Philadelphia, King of Prussia is considered to be an edge city of Philadelphia and part of the larger Philadelphia metropolitan area. It is situated at the convergence of four highways and consists of large amounts of retail and office space, with one of the highest concentrations of hotels, businesses, residences, and entertainment venues in Pennsylvania.[5]

King of Prussia is best known for its eponymous mall, the fourth-largest shopping mall in the U.S. It also hosts the headquarters of the Nuclear Regulatory Commission Region I and American Baptist Churches USA.

  1. ^ "ArcGIS REST Services Directory". United States Census Bureau. Retrieved October 12, 2022.
  2. ^ Cite error: The named reference USCensusDecennial2020CenPopScriptOnly was invoked but never defined (see the help page).
  3. ^ "King of Prussia". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
  4. ^ Huber, Robert (March 2017). "The Promised Land?". Philadelphia Magazine. pp. 76–79, 128–134.
  5. ^ "King of Prussia Historical Society | The History". Retrieved June 20, 2025.