Pennsylvania's 18th congressional district

"PA-18" redirects here. PA-18 may also refer to Pennsylvania Route 18.

Pennsylvania's 18th congressional district
Current Representative		Tim Murphy (R–Upper St. Clair)
Distribution	84.05% urban, 15.95% rural
Population (2000)	646,374
Median income	$44,938
Ethnicity	95.8% White, 2.0% Black, 1.3% Asian, 0.6% Hispanic, 0.1% Native American, 0.1% other
Cook PVI	R+6

Pennsylvania's 18th congressional district includes parts of Washington County, Allegheny and Westmoreland Counties. Republican Tim Murphy has represented the district since 2003.

The district is concentrated in the southern suburbs of Pittsburgh. It is predominantly white and affluent, although it contains a diverse range of suburbs. It is drawn in such a way that in some locations, neighborhoods and even streets are split between the 18th and the neighboring 12th and 14th districts. In parts of the eastern portion of the district, one side of the street is in the 12th while the other side is in the 18th. In the west, one side of the street is in the 14th while the other side is in the 18th.

Although there are 70,000 more Democrats in the district than Republicans, the district has trended increasingly Republican since the mid-1990s; most of the district's state legislators are Republicans. The eastern portion of the district contains some rural regions of Washington County, as well as the very wealthy suburbs located in the northern portion of this county, such as Peters Township. This portion of Washington County tends to be more Republican than the portion contained in the neighboring 12th District. Many of Allegheny County's southern suburbs of Pittsburgh are located in the district, which range from traditional wealth areas such as Mount Lebanon and Upper St. Clair, middle class communities such as Bethel Park and Brentwood, and working class labor towns such as Elizabeth.

The district also winds along the eastern suburbs at the edge of Allegheny County, including most of the large suburban commercial center of Monroeville, and in western Westmoreland County. Central Westmoreland County, including the recently Democratic city of Greensburg, is also part of the district. Greensburg hasn't voted Republican since 1995, according to the Election Bureau. It also contains the rural foothills areas of the county, which are located at the district's eastern end.

List of representatives

Representatives	Party	District Home	Years	Notes
District created in 1823
Patrick Farrelly	Jacksonian DR	Meadville	March 4, 1823 – March 3, 1825	Redistricted from the 15th district
	Jacksonian		March 4, 1825 – January 12, 1826	Died
Vacant			January 12, 1826 – January 13, 1826
Thomas H. Sill	Adams	Erie	January 13, 1826 – March 3, 1827
Stephen Barlow	Jacksonian Party	Meadville	March 4, 1827 – March 3, 1829
Thomas H. Sill	Anti-Jacksonian Party	Erie	March 4, 1829 – March 3, 1831	Declined renomination
John Banks	Anti-Masonic Party	Mercer County	March 4, 1831 – March 3, 1833	Redistricted to the 24th district
George Burd	Anti-Jacksonian Party	Carlisle	March 4, 1833 – March 3, 1835	Redistricted from the 13th district
Job Mann	Jacksonian Party	Bedford	March 4, 1835 – March 3, 1837
Charles Ogle	Anti-Masonic Party	Somerset	March 4, 1837 – March 3, 1841
	Whig		March 4, 1841 – May 10, 1841	Died
Vacant			May 10, 1841 – June 28, 1841
Henry Black	Whig Party	Somerset	June 28, 1841 – November 28, 1841	Died
Vacant			November 28, 1841 – December 21, 1841
James M. Russell	Whig Party	Bedford County	December 21, 1841 – March 3, 1843
Andrew Stewart	Whig Party	Uniontown	March 4, 1843 – March 3, 1849	Declined renomination
Andrew J. Ogle	Whig Party	Somerset County	March 4, 1849 – March 3, 1851	Unsuccessful candidate for reelection
John L. Dawson	Democratic Party	Springfield Township	March 4, 1851 – March 3, 1853	Redistricted to the 20th district
John McCulloch	Whig Party	Petersburg	March 4, 1853 – March 3, 1855
John R. Edie	Opposition Party	Somerset	March 4, 1855 – March 3, 1857
	Republican Party		March 4, 1857 – March 3, 1859
Samuel S. Blair	Republican Party	Hollidaysburg	March 4, 1859 – March 3, 1863	Unsuccessful candidate for reelection
James T. Hale	Independent Republican	Bellefonte	March 4, 1863 – March 3, 1865	Redistricted from the 15th district
Stephen F. Wilson	Republican Party	Wellsboro	March 4, 1865 – March 3, 1869
William H. Armstrong	Republican Party		March 4, 1869 – March 3, 1871
Henry Sherwood	Democratic Party	Wellsboro	March 4, 1871 – March 4, 1873	Unsuccessful candidate for reelection
Sobieski Ross	Republican Party		March 4, 1873 – March 4, 1875	Redistricted to the 16th district
William Stenger	Democratic Party		March 4, 1875 – March 3, 1879
Horatio G. Fisher	Republican Party		March 4, 1879 – March 3, 1883
Louis E. Atkinson	Republican Party	Mifflintown	March 4, 1883 – March 3, 1893
Thaddeus M. Mahon	Republican Party	Chambersburg	March 4, 1893 – March 3, 1903	Redistricted to the 17th district
Marlin E. Olmsted	Republican Party	Harrisburg	March 4, 1903 – March 3, 1913	Redistricted from the 14th district
Aaron S. Kreider	Republican Party	Annville	March 4, 1913]] – March 3, 1923	Unsuccessful candidate for reelection
Edward M. Beers	Republican Party	Huntingdon County	March 4, 1923 – April 21, 1932	Died
Vacant			April 11, 1932 – November 8, 1932
Joseph F. Biddle	Republican Party	Huntingdon	November 8, 1932 – March 3, 1933
Benjamin K. Focht	Republican Party	Lewisburg	March 4, 1933 – March 27, 1937	Died
Vacant			March 27, 1937 – May 11, 1937
Richard M. Simpson	Republican Party	Huntingdon	May 11, 1937]] – January 3, 1945]]	Redistricted to the 17th district
John C. Kunkel	Republican Party		January 3, 1945 – January 3, 1951	Redistricted from the 19th district
Walter M. Mumma	Republican Party		January 3, 1951 – January 3, 1953	Redistricted to the 16th district
Richard M. Simpson	Republican Party	Huntingdon	January 3, 1953 – January 7, 1960	Redistricted from the 17th district, Died
Vacant			January 7, 1960 – April 26, 1960
Douglas H. Elliot	Republican Party		April 26, 1960 – June 19, 1960	Died
Vacant			June 19, 1960 – November 8, 1960
J. Irving Whalley	Republican Party		November 8, 1960 – January 3, 1963	Redistricted to the 12th district
Robert J. Corbett	Republican Party	Pittsburgh	January 3, 1963 – April 25, 1971	Redistricted from the 29th district, Died
Vacant			April 25, 1971 – November 2, 1971
H. John Heinz III	Republican Party	Pittsburgh	November 2, 1971 – January 3, 1977	Elected to the United States Senate
Doug Walgren	Democratic Party		January 3, 1977 – January 3, 1991	Unsuccessful candidate for reelection
Rick Santorum	Republican Party		January 3, 1991 – January 3, 1995	Elected to the United States Senate
Michael F. Doyle	Democratic Party		January 3, 1995 – January 3, 2003	Redistricted to the 14th district
Tim Murphy	Republican Party		January 3, 2003 – Present	Incumbent

References

• 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