| George W. Armstrong |
May 24, 1858 - January 1, 1860 |
| Charles Scheffer |
January 1, 1860 - January 10, 1868 |
| Emil Munch |
January 10, 1868 - January 5, 1872 |
| William Seeger |
January 5, 1872 - February 7, 1873 |
| Edwin W. Dyke |
February 7, 1873 - January 7, 1876 |
| William Pfaender |
January 7, 1876 - January 10, 1880 |
| Charles Kittelson |
January 10, 1880 - January 5, 1887 |
| Joseph Bobleter |
January 5, 1887 - January 7, 1895 |
| August T. Koerner |
January 7, 1895 - January 7, 1901 |
| Julius H. Block |
January 7, 1901 - January 7, 1907 |
| Clarence C. Dinehart |
January 7, 1907 - June 8, 1910 |
| E. S. Pettijohn |
June 8, 1910 - January 3, 1911 |
| Walter J. Smith |
January 3, 1911 - February 14, 1916 |
| A. C. Gooding |
February 14, 1916 - January 2, 1917 |
| Henry Rines |
January 2, 1917 - July 1, 1925 |
| Edward W. Stark |
July 1, 1925 - January 4, 1927 |
| Julius A. Schmahl |
January 4, 1927 - January 5, 1937 |
| C. A. Halverson |
January 5, 1937 - January 2, 1939 |
| Julius A. Schmahl |
January 2, 1939 - January 2, 1951 |
| Val Bjornson |
January 2, 1951 - January 3, 1955 |
| Arthur Hansen |
January 3, 1955 - January 7, 1957 |
| Val Bjornson |
January 7, 1957 - January 6, 1975 |
| Jim Lord |
January 6, 1975 - January 3, 1983 |
| Robert W. Mattson |
January 3, 1983 - January 5, 1987 |
| Michael A. McGrath |
January 5, 1987 - January 4, 1999 |
|
| Carol C. Johnson |
January 4, 1999 - present |
|
