Elected to 2-year terms:
1851-1853 Christopher Hilliard
1853-1855 William Logan
1855-1857 Benjamin A. Garlinger
1857-1859 John M. Houck
1859-1861 Edward M. Moberly
1861-1863 Henry Gantz
1863-1865 Samuel Oliver
1865-1867 Jonathan Newcomer
1867-1869 George M. Grove
1869-1871 Daniel White
1871-1873 Robert C. Bamford
1873-1875 Jacob Marker
1875-1877 Peter J. Mayberry
1877-1879 Benjamin F. Reichard
1879-1881 Frederick K. Zeigler
1881-1883 Charles J. Knepper
1883-1885 David Thum
1885-1887 Elias Cost
1887-1889 John H. Gatrell
1889 George G. Solliday
1889-1891 Benjamin F. Newcomer
1891-1893 John N. Brumbaugh
1893-1895 Charles Herbert
1895 Bruce S. Zeller
1895-1897 Charles E. Smith
1897-1899 M. Finley Seibert
1899-1901 Bruce S. Zeller
1901-1903 Samuel P. Angle
1903-1905 Hammond A. Downin
1905-1907 Charles H. Deibert
1907-1909 George W. Earnshaw
1909-1911 Thomas H. Barber
1911-1913 Thomas A. Snively
1913-1915 Otto W. King
1915-1917 Isaac S. Long
1917-1919 Samuel Starliper
1919-1921 Richard Duffey
1921-1923 Scott McKline
1923-1926 Richard Duffey
1926-1930 Scott McKline
1930-1934 W. Bruce Downin
1934-1938 Max C. Malott
1938-1942 Joseph D. Baker
1942-1946 John B. Huyett
Elected to 4-year terms:
1946-1950 Joseph D. Baker
1950-1958 Edward L. Rowland
1958-1974 Charles E. Price
1974 Alonzo R. Hoffman
1974-1978 Francis R. Ford
1978-1986 Glenn L. Bowman
1986-2006 Charles F. Mades (D)
2006- Douglas W. Mullendore (D)
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