The list below is from several different sources including the BC Historical Society and the Lamar Democrat.
Every attempt has been made to be as accurate as possible

1855-1857  Alexander Henry
1857-1864  James Sevely
1864-1866 Samuel Cones
1866-1868  William Morris
1868-1872  Henry Harrington
1872-1876  Morris B. Earl
1876-1878  John Jackson
1878-1882  Dennis Springer
1882-1886  Simon Finley
1886-1892  George Garrett
1892-1896 William Carl
1896-1898  Lee Livingston
1898-1901  William Phillips
1901-1904  John Harlow
1904-1906  John Slavens
1906-1908  William Evilsizer
1908-1912  Charles Harrington
1912-1916  William Evilsizer
1916-1919  John Harlow (killed 3.13.1919)
1919  Jim Pinkerton (appointed by special election after Harlow was killed)
1919-1920  William Sewell
1920-1924  William Noble
1924-1928  Lisby Garrett
1928-1932  William Noble
1932-1936  James Bassett
1936-1940  Chris Wattenbarger
1940  Roy Patterson (killed 8.17.1944)
1944-1945  Thomas Box (appointed until special election could be held)
1945  Chester Austin (elected 2.27.1945. Resigned 10.6.1945)
1945  Thomas Box (appointed by special election to replace Austin)
1945-1952  James Bassett
1952-1964  Cecil Blanchard
1964-1980  Calvin Dockery
1980-1985  Ron Jeffries
1985  Wayne Shackleford (appointed  after Jeffries retired)
1985-2004  William Griffitt
2004-2008 Shannon Higgins
2008-Present  Mitch Shaw