1869  - 1878         B. G. Morris

1878  - 1883         W. S. M. Williams

1883 – 1884         J. B. Chamberlein

1885 – 1892         T. J. Rhoads – died while in office, Nov. 1892

1892 – 1893         C. W. Case

1894 – 1902         A. W. Talkington

1903 – 1910         J. I. Overman

1911 – 1914         J. A. Bradbury

1915 – 1918         John P. Eimers

1919 – 1947         Henry Telcher

1947 – 1972         Carl T. Reuter

1973 – 1974         Virginia Ricketts

1975 – 1982         Bob J. Waite

1983 – 1986         Joyce Hart

1987 – 2011         Rose E. Gehring  

2011-Present       Kathy M. Ackerman