Located 16 miles (26 km) from Philadelphia, it consists of the villages of Gulph Mills, King of Prussia, Swedeland, Swedesburg, and portions of Radnor, and Wayne.

King of Prussia also contains a major office park hosting firms such as Lockheed Martin and GlaxoSmithKline.

Merioneth is an English-language translation of the Welsh Meirionnydd, itself named after Meirchion (or Meirion), grandson of Cunedda Wledig (b. ca.

An alternate story says the Inn, first called Berry's Tavern, got its name to lure in Prussian mercenaries who spent freely.

A professional township manager runs the day-to-day operations overseeing the activities of 250 full and part-time employees.

The King of Prussia Inn, Poplar Lane, the Washington Memorial Chapel, Hanging Rock and Gulph Mills Bridge are listed on the National Register of Historic Places.

Upper Merion Township is home to Valley Forge National Historical Park, which consists of the site where General George Washington and the Continental Army made their encampment at Valley Forge during the winter of 1777–78 in the American Revolutionary War.

[6] King of Prussia, which is the third largest mall in the United States in terms of leasable space with over 450 stores, is located in Upper Merion Township.

After crossing the Schuylkill River at Swedesford on December 13, 1777, General George Washington and his troops visited Old Swedes Church and encamped there before going on to Valley Forge.

Upper Merion Township is run by an elected five person Board of Supervisors, each of whom serve staggered six year terms.

[16] It formed in 2012 by the merger of Mother of Divine Providence in King of Prussia and St. Teresa of Avila in Norristown.

[20] It served as the parish school for Our Lady of Mount Carmel, Saint Augustine, and Sacred Heart churches.

[21] The Penn State Great Valley campus was located in the King of Prussia section of Upper Merion from 1963 to 1978 before relocating to Radnor.

In 1982, the campus returned to Upper Merion, staying there until 1987, when it was relocated to its current location in Great Valley.

[26] Upper Merion Township is the location of several major highway junctions serving the Philadelphia metropolitan area.

Finally, the northernmost segment of Pennsylvania Route 252 enters the far western edge of the township near its terminus at PA 23.