History
| 1 | William Cochran Jr | 1835-1838 |
| 2 | David S. Gibbs | 1838-1842 |
| 3 | Thomas McClure | 1842-1846 |
| 4 | James H. Vail | 1846-1848 |
| 5 | R. Douglas | 1848-1852 |
| 6 | John B. Fruchey | 1852-1856 |
| 7 | James H. Vail (2nd) | 1856-1860 |
| 8 | William Craybill | 1860-1862 |
| 9 | John Cunningham | 1862-1866 |
| 10 | William W. Cartwright | 1866-1870 |
| 11 | Louis W. Albright | 1870-1874 |
| 12 | Henry C. Sherrard | 1874-1878 |
| 13 | Josiah Markley | 1878-1882 |
| 14 | Frank Rothman | 1882-1886 |
| 15 | Peter Wannemacher | 1886-1890 |
| 16 | David C. Williamson | 1890-1892 |
| 17 | Frank E. Treece | 1892-1894 |
| 18 | B.F. Burgess | 1894-1898 |
| 19 | Nicholas Miller | 1898-1902 |
| 20 | Frank E. Treece (2nd) | 1902-1906 |
| 21 | Joseph Zink | 1906-1911 |
| 22 | Nicholas Miller (2nd) | 1911-1915 |
| 23 | A.L. Tate | 1915-1919 |
| 24 | Wesley J. Lammers | 1919-1923 |
| 25 | Roy N. McCullough | 1923-1927 |
| 26 | Clinton Felkey | 1927-1931 |
| 27 | Wilson Crawfis | 1931-1937 |
| 28 | Arnold Potts | 1937-1961 |
| 29 | James Ruhe | 1961-1973 |
| 30 | Robert Beutler | 1973-1984 |
| 31 | Ronald E. Diemer | 1984-2001 |
| 32 | James R. Beutler | 2001-2013 |
| 33 | Michael C. Chandler | 2013- 2016 |
| 34 | David E. Roney | 2016 |
| 35 | Timothy I. Meyer | 2016 |
| 36 | Brian S. Siefker | 2017-Current |
