| A.C. Anda | April through November, 1905 | |
| Charles R. Dunlap | November 1, 1905 to February 1, 1906 | |
| Paul H. Roth | May 1, 1906 to April 1, 1913 | |
| Walter Krumweide | May 1, 1913 to December 31, 1913 | |
| F. R Webber | January 1,1914 to January, 1916 | |
| G. Cowles Smith | June 12, 1916 to February 13, 1922 | |
| Carl C. Roth | December 10, 1922 to November 1, 1930 | |
| C.F. Schneider | December 1, l930 to October 31, 1934 | |
| Frank A. Berg | February 27. 1935 to July 29, 1956 | |
| Trevor J. Sandness | August 29, 1956 to February 15, 1962 | |
| David Edward Archie | May 1,1962 to August 21, 1970 | |
| Ellis E. Waggoner | April 1, 1971 to January 18, 1973 | |
| Elmer B. Sterner | June 10, 1973 to August 31, 1984 | |
| Michael A. Sullivan | May 1, 1985 to April 22, 1994 | |
| Douglas Bisbee | August 1, 1995 to July 28, 1996 | |
| Randall N. Krause | May 1, 1997 to July ,2000. | |
| Timothy Heinecke | August ,2001 to June 15, 2004 | |
| Tina Koenig-Ray | January 9,2005 to Present |
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