Manager system of government began Jan. 1, 1932
| Roy S. Braden | 1932 – 1936 |
| Frank C. Hanrahan | 1936 – 1947 |
| A.T. Lundberg | 1947 – 1962 |
| Bert W. Johnson | 1962 – 1976 |
| W. Vernon Ford | 1976 – 1981 |
| Larry J. Brown | 1982 – 1987 |
| Anton S. Gardner | 1987 – 1998 |
| William T. Donahue | 1998 – 2001 |
| Ron Carlee | 2001 – 2009 |
| Michael Brown | 2010 – 2010 |
| Barbara M. Donnellan | 2010 – 2015 |
| Mark Schwartz | 2016 – |