Pennsylvania's 7th congressional district includes all of Carbon, Lehigh, and Northampton Counties, and parts of Monroe County. It has been represented by Republican Ryan Mackenzie since 2025.

From March 2003 through 2018, the district incorporated parts of the Philadelphia suburbs, including most of Delaware County, along with portions of Chester, Montgomery, Berks, and Lancaster Counties. The district exhibited extreme non-congruity during that time as a result of gerrymandering. On January 22, 2018, the Supreme Court of Pennsylvania ruled that the map violated the state constitution, and in February, it issued its own district boundaries for use in the 2018 elections and representation thereafter.League of Women Voters of Pennsylvania v. Commonwealth of Pennsylvania, No. 159 MM 2018, (PA February 19, 2018) Most of the population in the old 7th district became part of a new 5th district, encompassing all of Delaware County and parts of South Philadelphia; while most of the old 15th district became the new 7th district. In the 2020 redistricting cycle, Carbon County was added into the district, in exchange for the area around East Stroudsburg in Monroe County.

Pat Meehan, who had represented the old 7th district since 2011, resigned on April 27, 2018, amid a sexual harassment case. Mary Gay Scanlon won the special election on November 6, 2018, to replace him for the remainder of his term, and she served for slightly less than two months as the last representative for the old 7th district before being transferred to the newly redrawn 5th district. Susan Wild won the general election in the newly redrawn 7th district, and she took office January 3, 2019.

In 2024, Susan Wild would lose re-election to current Republican Representative Ryan Mackenzie.

The district was identified as a presidential bellwether by Sabato's Crystal Ball, having voted for the Electoral College winner in the past five presidential elections as of 2024.

Recent election results from statewide races Year Office Results2008 PresidentObama 56–43% Attorney GeneralMorganelli 59–41% Auditor GeneralWagner 59–41%2010 SenateToomey 53–47% GovernorCorbett 55–45%2012 PresidentObama 53–47% SenateCasey Jr. 54–46%2014 GovernorWolf 55–45%2016 PresidentTrump 50–47% SenateToomey 50–46% Attorney GeneralShapiro 51–49% Auditor GeneralBrown 48–47% TreasurerTorsella 50–45%2018 SenateCasey Jr. 54–44% GovernorWolf 57–41%2020 PresidentBiden 50–49% Attorney GeneralShapiro 50–47% Auditor GeneralDeFoor 49–46% TreasurerGarrity 49–48%2022 SenateFetterman 51–46% GovernorShapiro 55–43%2024 PresidentTrump 51–48% SenateMcCormick 50–48% Attorney GeneralSunday 51–46% Auditor GeneralDeFoor 51–46% TreasurerGarrity 52–46%

Geography 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 Philadelphia 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." The Washington Post listed it as one of the ten most gerrymandered districts in the country.

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. The newly redrawn district includes all of Lehigh County and Northampton County as well as parts of Monroe County.

Composition

Carbon County (23) All 23 municipalities

Lehigh County (25)

All 25 municipalities

Monroe County (3)

Eldred Township, Polk Township, Ross Township (part; also 8th)

Northampton County (38)

All 38 municipalities

List of members representing the district

1791–1793: one seat District created in 1791.

Representative Party Years Congress Electoral history District first established March 4, 1791 Thomas Hartley Pro-Administration March 4, 1791 –March 3, 1793 Redistricted from the and re-elected in 1791.Redistricted to the .

District redistricted in 1793 to the .

1795–1823: one seat

District restored in 1795.

Member Party Years Congress Electoral history John W. Kittera Federalist March 4, 1795 –March 3, 1801 Redistricted from the and re-elected in 1794.Re-elected in 1796.Re-elected in 1798.Retired. Thomas Boude Federalist March 4, 1801 –March 3, 1803 Elected in 1800.Redistricted to the and lost re-election. John Rea Democratic-Republican March 4, 1803 –March 3, 1811 Elected in 1802.Re-elected in 1804.Re-elected in 1806.Re-elected in 1808.Lost re-election. William Piper Democratic-Republican March 4, 1811 –March 3, 1813 Elected in 1810.Redistricted to the . John M. Hyneman Democratic-Republican March 4, 1813 –August 2, 1813 Redistricted from the and re-elected in 1812.Resigned. Vacant August 2, 1813 –October 12, 1813 Daniel Udree Democratic-Republican October 12, 1813 –March 3, 1815 Elected October 12, 1813, to finish Hyneman's term and seated December 6, 1813.Lost re-election. Joseph Hiester Democratic-Republican March 4, 1815 –December ????, 1820 Elected in 1814.Re-elected in 1816.Resigned to become Governor of Pennsylvania. Vacant December ????, 1820 –December 26, 1820 Daniel Udree Democratic-Republican December 26, 1820 –March 3, 1821 Elected December 10, 1820, to finish Hiester's term and seated January 8, 1821.Had not been a candidate for the next term. Ludwig Worman Federalist March 4, 1821 –October 17, 1822 Elected in 1820.Lost re-election and then died. Vacant October 17, 1822 –December 10, 1822 Daniel Udree Democratic-Republican December 10, 1822 –March 3, 1823 Elected in 1822.Later elected December 10, 1822, to finish Worman's term and seated December 23, 1822.

1823–1833: two seats Member Party Years Congress Electoral history Member Party Years Congress Electoral history Henry Wilson Democratic-Republican March 4, 1823 –March 3, 1825 Elected in 1822.Re-elected in 1824.Died. Daniel Udree Democratic-Republican March 4, 1823 –March 3, 1825 Re-elected in 1822.Retired. Jacksonian March 4, 1825 –August 24, 1826 William Addams Jacksonian March 4, 1825 –March 3, 1829 Elected in 1824.Re-elected in 1826.Lost re-election. Vacant August 24, 1826 –December 4, 1826 Jacob Krebs Jacksonian December 4, 1826 –March 3, 1827 Elected October 10, 1826, to finish Wilson's term and seated December 4, 1826.Was not a candidate for the next term. Joseph Fry Jr. Jacksonian March 4, 1827 –March 3, 1831 Elected in 1826.Re-elected in 1828.Retired. Henry A. P. Muhlenberg Jacksonian March 4, 1829 –March 3, 1833 Elected in 1828.Re-elected in 1830.Redistricted to the . Henry King Jacksonian March 4, 1831 –March 3, 1833 Elected in 1830.Redistricted to the .

1833–present: one seat