Upper Darby Township (often shortened to simply Upper Darby) is a home rule township bordering Philadelphia in Delaware County, Pennsylvania, United States. Upper Darby is home to the Tower Theater, a historic music venue on 69th Street built in the 1920s. Upper Darby's population is diverse, representing over 100 ethnic cultures. The township hosts a range of housing types including densely populated rowhouse sections similar to houses in neighboring West Philadelphia, tree-lined neighborhoods of turn-of-the-century single-family houses and mid-century developments. It is Pennsylvania's sixth most populous municipality.
Upper Darby is 65% residential, 25% commercial, and 8% other. As of the 2010 census, the township had a total population of 82,795. Because of a home-rule charter adopted in 1974 and effective in 1976, Upper Darby utilizes a mayor-council form of management, unlike communities that are still under the Pennsylvania Township Code. ("First Class" townships in Pennsylvania have a board of commissioners divided into wards, and "Second Class" townships having a board of supervisors, which are usually elected "at-large".)
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