In its last incarnation, the district included all of Adams and York Counties, and parts of Cumberland County. The last representative was Republican Todd Russell Platts, who decided to retire at the end of the 112th Congress.
Most of the 19th district remained intact and was renumbered as the 4th district.
| Representatives | Party | Years | Electoral history |
|---|
| District created in 1833 |
| Richard Coulter | Jacksonian | March 4, 1833 –
March 3, 1835 | Pennsylvania|17|C}}.
Lost re-election. |
| John Klingensmith Jr. | Jacksonian | March 4, 1835 –
March 3, 1837 | Re-elected. |
| Democratic | March 4, 1837 –
March 3, 1839 | Became secretary of the Land Office of Pennsylvania. |
| Albert G. Marchand | Democratic | March 4, 1839 –
March 3, 1843 | {{dm}}
Retired. |
Henry D. Foster | Democratic | March 4, 1843 –
March 3, 1847 | {{dm}}
Retired. |
| Job Mann | Democratic | March 4, 1847 –
March 3, 1851 | {{dm}}
Retired. |
| Joseph H. Kuhns | Whig | March 4, 1851 –
March 3, 1853 | {{dm}}
Lost re-election. |
| Augustus Drum | Democratic | March 4, 1853 –
March 3, 1855 | {{dm}}
Lost re-election. |
John Covode | Opposition | March 4, 1855 –
March 3, 1857 | Re-elected |
| Republican | March 4, 1857 –
March 3, 1863 | {{dm}}
Retired. |
Glenni W. Scofield | Republican | March 4, 1863 –
March 3, 1873 | {{dm}}
Redistricted to the At-large district |
Carlton B. Curtis | Republican | March 4, 1873 –
March 3, 1875 | {{dm}}
Lost re-election. |
Levi Maish | Democratic | March 4, 1875 –
March 3, 1879 | {{dm}}
Lost re-election. |
| Frank E. Beltzhoover | Democratic | March 4, 1879 –
March 3, 1883 | {{dm}}
Retired. |
| William A. Duncan | Democratic | March 4, 1883 –
November 14, 1884 | {{dm}}
Died. |
| Vacant | November 14, 1884 –
December 23, 1884 |
| John A. Swope | Democratic | December 23, 1884 –
March 3, 1885 | Elected to finish Duncan's term; not re-elected |
| Vacant | March 4, 1885 –
November 3, 1885 |
| John A. Swope | Democratic | November 3, 1885 –
March 3, 1887 | Elected to finish the term of Representative-elect William A. Duncan who died; retired. |
Levi Maish | Democratic | March 4, 1887 –
March 3, 1891 | {{dm}}
Lost re-election. |
| Frank E. Beltzhoover | Democratic | March 4, 1891 –
March 3, 1895 | {{dm}}
Retired. |
| James A. Stahle | Republican | March 4, 1895 –
March 3, 1897 | {{dm}}
Retired. |
| George J. Benner | Democratic | March 4, 1897 –
March 3, 1899 | {{dm}}
Retired. |
| Edward D. Ziegler | Democratic | March 4, 1899 –
March 3, 1901 | {{dm}}
Lost re-election. |
| Robert J. Lewis | Republican | March 4, 1901 –
March 3, 1903 | {{dm}}
Retired. |
| Alvin Evans | Republican | March 4, 1903 –
March 3, 1905 | Pennsylvania|20|C}}.
{{dm}} |
John M. Reynolds | Republican | March 4, 1905 –
January 17, 1911 | {{dm}}
Resigned to become Lieutenant Governor |
| Vacant | January 17, 1911 –
March 3, 1911 |
| Jesse L. Hartman | Republican | March 4, 1911 –
March 3, 1913 | {{dm}}
Lost re-election. |
Warren W. Bailey | Democratic | March 4, 1913 –
March 3, 1917 | {{dm}}
Lost re-election. |
| John M. Rose | Republican | March 4, 1917 –
March 3, 1923 | {{dm}}
Retired. |
Frank C. Sites | Democratic | March 4, 1923 –
March 3, 1925 | {{dm}}
Lost re-election. |
| Joshua W. Swartz | Republican | March 4, 1925 –
March 3, 1927 | {{dm}}
Retired. |
| Isaac H. Doutrich | Republican | March 4, 1927 –
January 3, 1937 | {{dm}}
Lost re-election. |
| Guy J. Swope | Democratic | January 3, 1937 –
January 3, 1939 | {{dm}}
Lost re-election. |
John C. Kunkel | Republican | January 3, 1939 –
January 3, 1945 | | Redistricted to the {{ushr>Pennsylvania|18|C}}.
Leon H. Gavin | Republican | January 3, 1945 –
January 3, 1953 | Pennsylvania|20|C}}.
Redistricted to the {{ushr|Pennsylvania|23|C}}. |
| S. Walter Stauffer | Republican | January 3, 1953 –
January 3, 1955 | {{dm}}
Lost re-election. |
James M. Quigley | Democratic | January 3, 1955 –
January 3, 1957 | {{dm}}
Lost re-election. |
| S. Walter Stauffer | Republican | January 3, 1957 –
January 3, 1959 | {{dm}}
Lost re-election. |
James M. Quigley | Democratic | January 3, 1959 –
January 3, 1961 | {{dm}}
Lost re-election. |
George A. Goodling | Republican | January 3, 1961 –
January 3, 1965 | Lost second re-election |
Nathaniel N. Craley Jr. | Democratic | January 3, 1965 –
January 3, 1967 | {{dm}}
Lost re-election. |
George A. Goodling | Republican | January 3, 1967 –
January 3, 1975 | {{dm}}
Retired. |
William F. Goodling | Republican | January 3, 1975 –
January 3, 2001 | {{dm}}
Retired. |
Todd R. Platts | Republican | January 3, 2001 –
January 3, 2013 | {{dm}}
Retired from legislative service
Elected as a judge in November 2013 |
| District eliminated in 2013 |