| Name/Party | Term of office | Remarks |
| A.J. Pinkham | May 1, 1891, to February 1, 1893 | Elected 1890 |
| J.F. Curtis | February 1, 1893, to July 1, 1895 | Elected 1892 |
| Isaac W. Garrett | July 1, 1895, to April 1, 1897 | Elected 1894 |
| George Lewis | April 1, 1897, to February 1, 1899 | Elected 1896 |
| M.A. Patrie | February 1, 1899, to July 1, 1901 | Elected 1898 |
| Charles Bassett | July 1, 1901, to May 1, 1903 | Elected 1900 |
| Will H. Gibson | May 1, 1903, to July 1, 1907 | Elected 1902; reelected 1904 |
| Robert Lansdon | July 1, 1907, to February 1, 1911 | Elected 1906; reelected 1908 |
| Wilford L. Gifford | February 1, 1911, to April 1, 1915 | Elected 1910; reelected 1912 |
| George R. Barker | April 1, 1915, to January 1, 1917 | Elected 1914 |
| William T. Dougherty | January 1, 1917, to June 1, 1919 | Elected 1916 |
| Robert O. Jones | June 1, 1919, to January 1, 1923 | Elected 1918; reelected 1920 |
| F.A. Jeter | January 1, 1923, to March 1, 1927 | Elected 1922; reelected 1924 |
| Fred E. Lukens | March 1, 1927, to February 1, 1933 | Elected 1926; reelected 1928, 1930 |
| Franklin Girard | February 1, 1933, to March 1, 1937 | Elected 1932; reelected 1934 |
| Ira H. Masters | March 1, 1937, to February 1, 1939 | Elected 1936 |
| George H. Curtis | February 1, 1939, to January 1, 1945 | Elected 1938; reelected 1940, 1942 |
| Ira H. Masters | January 1, 1945, to June 1, 1947 | Elected 1944 |
| J.D. Price | June 1, 1947, to January 1, 1951 | Elected 1946 |
| Ira H. Masters | January 1, 1951, to February 19, 1956 | Elected 1950; reelected 1954; died in office |
| James H. Young | February 27, 1956, to May 1, 1959 | Appointed to fill vacancy |
| Arnold Williams | May 1, 1959, to March 29, 1966 | Elected 1958; reelected 1962; resigned March 29, 1966 |
| Louis E. Clapp | March 29, 1966, to February 1, 1967 | Appointed to fill vacancy |
| Edson H. Deal | February 1, 1967, to April 22, 1967 | Elected 1966; died in office |
| Pete T. Cenarrusa | January 5, 1967, to June 1, 2003 | Appointed to fill vacancy; Elected 1970; reelected 1974, 1978, 1982, 1986, 1990, 1994, 1998 |
| Ben Ysursa | June 1, 2003, to May 1, 2015 | Elected 2002; reelected 2006, 2010 |
| Lawerence Denney | May 1, 2015, to January 2, 2023 | Elected 2014; reelected 2018 |
| Phil McGrane | January 2, 2023 | Elected 2022 |