Pennsylvania's 7th congressional district

The following table includes election results for previous incarnations of the 7th congressional district; see #Historical district boundaries.

The 2003–2012 version of the district was located in southeastern Pennsylvania. It contained the western and northwestern suburbs of Philadelphia. It consisted of the majority of Delaware County (except for the City of Chester and some of the eastern boroughs), a portion of Chester County east of West Chester in the affluent Main Line area, and a portion of southern Montgomery County centered on Upper Merion Township.

The 2013–2018 version of the district contained most of Delaware County outside of the City of Chester and the heavily African American townships and boroughs in the eastern portion of the county. It also contained parts of central Montgomery County, southern portions of Berks County, southern and central portions of Chester County, and a small portion of eastern Lancaster County. The District as it stood in October 2016 was named on NPR's On the Media as an egregious example of gerrymandering. The shape of the district was described as "Goofy kicking Donald Duck. The only point that is essentially contiguous there is Goofy's foot in Donald Duck's rear end. [...] However these district lines are the building blocks of democracy, and when they get as perverted and twisted as this, it leads to deeply undemocratic outcomes."[5] The Washington Post listed it as one of the ten most gerrymandered districts in the country.[6]

On February 19, 2018, the Supreme Court of Pennsylvania released a new congressional map after lawmakers had failed to agree on a map that would reduce gerrymandering. The map substantially redrew the District, relocating it to the Lehigh Valley.[4] The newly redrawn district includes all of Lehigh County and Northampton County as well as parts of Monroe County.

The district encompasses an area of diverse wealth, ranging from blue collar and working class households in the southeastern portions of Delaware County (mostly around in the oil refinery areas of Marcus Hook and Trainer) to the southern and western portions of the affluent Main Line area of Chester, Delaware, and Montgomery Counties. The district is the home of several major colleges and universities, including Haverford College; Villanova University; Penn State Brandywine; Delaware County Community College; Eastern University; and Cheyney University, the first traditionally black college in the U.S. The district is also the home of Boeing's helicopter facility in Ridley Park. Chester, the only city in Delaware County, is split between the 7th district and 1st Congressional District, but is mostly in the 1st district.

• 
  2003–2013
• 
  2013–2019

• List of United States congressional districts
• Pennsylvania's congressional districts

• Martis, Kenneth C. (1989). The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.
• Martis, Kenneth C. (1982). The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company.
• Congressional Biographical Directory of the United States 1774–present

• District map
• Congressional redistricting in Pennsylvania