King of Prussia, Pennsylvania

King of Prussia, Pennsylvania
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
 (2020)
  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

King of Prussia (nicknamed K.O.P.) 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. King of Prussia is considered to be an edge city of Philadelphia, consisting of large amounts of retail and office space situated at the convergence of four highways.

King of Prussia is located 35 miles (56 km) south of Allentown and 15 miles (24 km) northwest of Philadelphia. It is considered part of the larger Philadelphia metropolitan area. As of the 2020 census, its population was 22,028.

King of Prussia mall is the fourth-largest shopping mall in the US. The headquarters of the Nuclear Regulatory Commission Region I and American Baptist Churches USA are located in King of Prussia.