Upper Merion Township, Pennsylvania

Upper Merion Township, Pennsylvania
Township
Upper Merion Township municipal building and public library
Flag Seal
Upper Merion Township Location of Upper Merion Township in Pennsylvania Show map of Pennsylvania Upper Merion Township Upper Merion Township (the United States) Show map of the United States
Coordinates: 40°05′00″N 75°20′59″W / 40.08333°N 75.34972°W / 40.08333; -75.34972
Country	United States of America
State	Pennsylvania
County	Montgomery
Incorporated	1713
Area [1]
• Total	17.27 sq mi (44.74 km2)
• Land	16.96 sq mi (43.91 km2)
• Water	0.32 sq mi (0.82 km2)
Elevation	171 ft (52 m)
Population  (2020)
• Total	33,613
• Estimate  (2016)[2]	28,640
• Density	1,689.08/sq mi (652.17/km2)
Time zone	UTC-5 (EST)
• Summer (DST)	UTC-4 (EDT)
Area code(s)	610 and 484
FIPS code	42-091-79136
Website	www.umtownship.org

Upper Merion Township is a township in Montgomery County, Pennsylvania, United States. The population was 33,613 at the 2020 U.S. Census. 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.

The westernmost part of the township comprises the largest part of the 1,300-acre (5 km²) Valley Forge National Historical Park. The township is the home of the King of Prussia mall, the third-largest shopping mall in the United States in terms of gross leasable area. King of Prussia also contains a major office park hosting firms such as Lockheed Martin and GlaxoSmithKline.

The name Merion originates with the county of Merioneth in north Wales. Merioneth is an English-language translation of the Welsh Meirionnydd, itself named after Meirchion (or Meirion), grandson of Cunedda Wledig (b. ca. 380 A.D.), King of North Wales.^[3]