Pennsylvania State Senate District 21 includes parts of Butler County and Erie County and all of Clarion County, Forest County, Venango County, and Warren County. It is currently represented by Republican Scott Hutchinson.
| Pennsylvania's 21st State Senate district | |||
|---|---|---|---|
 | |||
| Senator |
| ||
| Population (2021) | 258,167 | ||
The district includes the following areas:[1]
All of Clarion County
All of Forest county
All of Venango County
All of Warren County
| Representative[2] | Party | Years | District home | Note |
|---|---|---|---|---|
| Samuel Power | Republican | 1823 – 1828 | Pennsylvania State Senator for the 19th district from 1815 to 1822[3] | |
| Moses Sullivan | Democratic | 1825 – 1828 | Pennsylvania State Senator for the 25th district from 1829 to 1832[4] | |
| William Hays | Anti-Masonic | 1831 – 1834 | ||
| Cornelius Darragh | Anti-Masonic | 1835 – 1836 | Pennsylvania State Senator for the 19th district from 1837 to 1838. U.S. Representative for Pennsylvania's 21st congressional district from 1844 to 1847. 25th Attorney General of Pennsylvania from 1849 to 1851.[5] | |
| Joseph M. Sterrett | Whig | 1837 – 1840 | ||
| John Wilson Farrelly | Whig | 1841 – 1842 | Pennsylvania State Representative in 1837. Pennsylvania State Senator for the 26th district from 1843 to 1844. U.S. Representative for Pennsylvania's 22nd congressional district from 1847 to 1849.[6] | |
| John Hill | Democratic | 1845 – 1846 | Pennsylvania State Senator for the 16th district from 1843 to 1844[7] | |
| Samuel Hill | Democratic | 1845 – 1848 | ||
| Isaac Hugus | Democratic | 1849 – 1850 | ||
| William Haslett | Whig | 1851 – 1852 | Pennsylvania State Senator for the 24th district from 1849 to 1850[8] | |
| Archibald Robertson | Republican | 1851 – 1852 | ||
| John C. Ferguson | Whig | 1853 – 1856 | ||
| John R. Harris | Republican | 1857 – 1858 | Pennsylvania State Senator for the 25th district from 1859 to 1860[9] | |
| Jonathan E. Meredith | Republican | 1861 – 1862 | ||
| Henry Lloyd Wright | Republican | 1863 – 1874 | ||
| Louis Williams Hall | Republican | 1865 – 1868 | Pennsylvania State Senator for the 20th district from 1861 to 1862[10] | |
| Kirk Haines | Whig | 1865 – 1866 | ||
| Samuel Townsend Shugert | Democratic | 1867 – 1868 | ||
| Charles J. T. McIntyre | Democratic | 1867 – 1870 | ||
| John Kincaid Robison | Republican | 1869 – 1870 | ||
| Hiram Findlay | Democratic | 1871 – 1872 | Pennsylvania State Senator for the 20th district from 1869 to 1870 | |
| Robert Bruce Petriken | Democratic | 1871 – 1872 | Pennsylvania State Senator for the 22nd district from 1873 to 1874[11] | |
| David McLean Crawford | Democratic | 1871 – 1872 | Pennsylvania State Senator for the 22nd district from 1873 to 1874 and the 31st district from 1877 to 1880[12] | |
| John A. Lemon | Republican | 1873 – 1874 | Pennsylvania State Senator for the 35th district from 1875 to 1896[13] | |
| Hubbard Bester Payne | Republican | 1875 – 1876 | ||
| Elijah Catlin Wadhams | Republican | 1877 – 1880 | ||
| Eckley Brinton Coxe | Democratic | 1881 – 1884 | ||
| Morgan B. Williams | Republican | 1885 – 1888 | ||
| William Henry Hines | Democratic | 1889 – 1892 | ||
| Clarence W. Kline | Republican | 1893 – 1896 | ||
| William J. Scott | Republican | 1897 – 1900 | ||
| William Drury | Republican | 1901 – 1904 | ||
| Sterling Ross Catlin | Republican | 1905 – 1920 | ||
| Laning Harvey | Republican | 1929 – 1936 | ||
| Leo C. Mundy | Democratic | 1939 – 1944 | ||
| Peter M. Margie | Democratic | 1945 – 1948 | ||
| Patrick J. Toole | Democratic | 1949 – 1954 | ||
| William H. Davis | Democratic | 1955 – 1956 | ||
| Titian James Coffey | Republican | 1959 – 1960 | Pennsylvania State Senator for the 25th district from 1957 to 1958[14] | |
| Donald O. Oesterling | Democratic | 1965 – 1972 | Butler | |
| W. Thomas Andrews | Republican | 1973 – 1980 | New Castle | |
| Tim Shaffer | Republican | 1981 – 1996 | Butler | |
| Mary Jo White | Republican | 1997 – 2012 | Franklin | |
| Scott Hutchinson | Republican | 2012 – | Oil City |