| Representative[2] |
Party |
Years |
District home |
Note |
| Samuel Power | Republican | 1815 – 1822 | | Pennsylvania State Senator for the 21st district from 1823 to 1828[3] |
| John St. Clair | Democratic-Republican | 1823 – 1826 | | |
| Daniel Sturgeon | Jackson Democrat | 1827 – 1830 | | Pennsylvania State Representative from 1818 to 1824. Treasurer of Pennsylvania from 1836 to 1840. U.S. Senator from Pennsylvania from 1840 to 1851.[4] |
| Solomon G. Krepps | Democratic | 1831 – 1832 | | |
| John A. Sangston | Democratic | 1833 – 1838 | | |
| Cornelius Darragh | Whig | 1837 – 1838 | | Pennsylvania State Senator for the 21st district from 1835 to 1836. 25th Attorney General of Pennsylvania from 1849 to 1851. U.S. Representative for Pennsylvania's 21st congressional district from 1844 to 1847.[5] |
| William Alexander Purviance | Anti-Masonic | 1835 – 1839 | | |
| Thomas S. Williams | Whig | 1839 – 1841 | | |
| Charles Craven Sullivan | Whig | 1841 – 1844 | | Pennsylvania State Senator for the 24th district from 1845 to 1846[6] |
| George Darsie | Whig | 1841 – 1842 | | Pennsylvania State Senator for the 24th district from 1843 to 1854[7] |
| George Shannon Mullin Sr. | Whig | 1843 – 1844 | | Pennsylvania State Senator for the 15th district from 1841 to 1842[8] |
| John Morrison | Whig | 1845 | | |
| Alexander King | Whig | 1847 – 1850 | | |
| John Hoge | Democratic | 1851 | | |
| Thomas Hoge | Democratic | 1853 – 1856 | | Pennsylvania State Senator for the 26th district from 1863 to 1864 and the 28th district from 1865 to 1866.[9] |
| William Peter Schell | Democratic | 1857 – 1859 | | |
| Glenni William Scofield | Republican | 1857 – 1858 | | Pennsylvania State Representative from 1849 to 1851. Pennsylvania State Senator for the 11th district from 1859 to 1860. U.S. Representative for Pennsylvania's 19th congressional district from 1863 to 1873. U.S. Representative for Pennsylvania's at-large congressional district from 1873 to 1875[10] |
| Samuel S. Wharton | Republican | 1861 | | |
| George W. Householder | Republican | 1863 – 1864 | | Pennsylvania State Senator for the 20th district from 1865 to 1866[11] |
| Alexander Stutzman | Republican | 1863 – 1866 | | Pennsylvania State Senator for the 20th district from 1867 to 1868[12] |
| William McSherry | Democratic | 1865 – 1866 | | Pennsylvania State Senator for the 18th district from 1863 to 1864 and the 20th district from 1873 to 1874.[13] |
| Calvin Mark Duncan | Democratic | 1865 – 1871 | | |
| James Marion Weakley | Republican | 1871 – 1873 | | |
| Robert L. McClellan | Republican | 1875 | | |
| James Bowen Everhart | Republican | 1877 – 1892 | | U.S. Representative for Pennsylvania's 6th congressional district from 1883 to 1887[14] |
| Abram D. Harlan | Republican | 1893 – 1904 | | |
| Septimus Evans Nivin | Democratic | 1891 – 1892 | | |
| William Preston Snyder | Republican | 1893 – 1904 | | |
| Oscar E. Thomson | Republican | 1905 – 1912 | | |
| John Gyger | Republican | 1913 – 1916 | | |
| Thomas Lawrence Eyre | Republican | 1919 – 1926 | | |
| William Hannum Clark | Republican | 1927 – 1936 | | |
| George B. Scarlett | Republican | 1937 – 1952 | | |
| Thomas P. Harney | Republican | 1953 – 1960 | | |
| John H. Ware III | Republican | 1961 – 1970 | | U.S. Representative for Pennsylvania's 9th congressional district from 1970 to 1973 and Pennsylvania's 5th congressional district from 1973 to 1975.[15] |
| John Stauffer | Republican | 1970 – 1988 | | Pennsylvania State Representative for the Chester County district from 1965 to 1968 and the 157th district from 1969 to 1970. Republican Whip of the Pennsylvania Senate from 1977 to 1982. Republican Leader of the Pennsylvania Senate from 1985 to 1988.[16] |
| Earl M. Baker | Republican | 1989 – 1995 | | Resigned August 31, 1995[17] |
| Robert J. Thompson | Republican | 1995 – 2006 | | Seated December 4, 1995.[18]
Died Jan 28, 2006 |
| Andrew E. Dinniman | Democratic | 2006 – 2020 | West Whiteland Township | Elected May 16, 2006 to fill vacancy.[19] |
| Carolyn Comitta |
Democratic |
2021 – present |
West Chester |
|
