| State: | Pennsylvania |
| District: | 21 |
| Chamber: | Senate |
| Representative: | Scott Hutchinson |
| Party: | Republican |
| Residence: | Oil City |
| Population: | 258,167 |
| Population Year: | 2021 |
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.
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 | |
|---|---|---|---|---|---|
| 1823 - 1828 | Pennsylvania State Senator for the 19th district from 1815 to 1822[3] | ||||
| Democratic | 1825 - 1828 | Pennsylvania State Senator for the 25th district from 1829 to 1832[4] | |||
| William Hays | 1831 - 1834 | ||||
| 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] | ||||
| 1837 - 1840 | |||||
| 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] | ||||
| Democratic | 1845 - 1846 | Pennsylvania State Senator for the 16th district from 1843 to 1844[7] | |||
| Democratic | 1845 - 1848 | ||||
| Democratic | 1849 - 1850 | ||||
| 1851 - 1852 | Pennsylvania State Senator for the 24th district from 1849 to 1850[8] | ||||
| 1851 - 1852 | |||||
| 1853 - 1856 | |||||
| 1857 - 1858 | Pennsylvania State Senator for the 25th district from 1859 to 1860[9] | ||||
| 1861 - 1862 | |||||
| 1863 - 1874 | |||||
| 1865 - 1868 | Pennsylvania State Senator for the 20th district from 1861 to 1862[10] | ||||
| 1865 - 1866 | |||||
| Democratic | 1867 - 1868 | ||||
| Democratic | 1867 - 1870 | ||||
| 1869 - 1870 | |||||
| Democratic | 1871 - 1872 | Pennsylvania State Senator for the 20th district from 1869 to 1870 | |||
| Democratic | 1871 - 1872 | Pennsylvania State Senator for the 22nd district from 1873 to 1874[11] | |||
| Democratic | 1871 - 1872 | Pennsylvania State Senator for the 22nd district from 1873 to 1874 and the 31st district from 1877 to 1880[12] | |||
| 1873 - 1874 | Pennsylvania State Senator for the 35th district from 1875 to 1896[13] | ||||
| 1875 - 1876 | |||||
| 1877 - 1880 | |||||
| Democratic | 1881 - 1884 | ||||
| 1885 - 1888 | |||||
| Democratic | 1889 - 1892 | ||||
| 1893 - 1896 | |||||
| 1897 - 1900 | |||||
| 1901 - 1904 | |||||
| 1905 - 1920 | |||||
| 1929 - 1936 | |||||
| Democratic | 1939 - 1944 | ||||
| Democratic | 1945 - 1948 | ||||
| Democratic | 1949 - 1954 | ||||
| Democratic | 1955 - 1956 | ||||
| 1959 - 1960 | Pennsylvania State Senator for the 25th district from 1957 to 1958[14] | ||||
| Democratic | 1965 - 1972 | ||||
| Republican | 1973 - 1980 | ||||
| Republican | 1981 - 1996 | ||||
| Republican | 1997 - 2012 | ||||
| Republican | 2012 - |