| Charles A. Cook | 1861-63 |
| Amos Steck | 1863-64 |
| H. J. Brendlinger | 1864-65 |
| George T. Clark | 1865-66 |
| Milton LeLano | 1866-68 |
| W. M. Clayton | 1868-69 |
| B. B. Stiles | 1869-71 |
| John Harper | 1871-72 |
| Joseph E. Bates | 1872-73 |
| Francis M. Case | 1873-74 |
| William J. Barker | 1874-76 |
| Dr. R. G. Buckingham | 1876-77 |
| Baxter B. Stiles | 1877-78 |
| Richard Sopris | 1878-81 |
| Robert Morris | 1881-83 |
| John L. Routt | 1883-85 |
| Joseph E. Bates | 1885-87 |
| William Scott Lee | 1887-89 |
| Wolfe Londoner | 1889-91 |
| Platt Rogers | 1891-93 |
| M. D. VanHom | 1893-95 |
| Thomas S. McMurry | 1895-99 |
| Henry V. Johnson1 | 1899-1901 |
| Robert R. Wright | 1901-04 |
| Robert W. Speer | 1904-12 |
| Henry J. Arnold | 1912-13 |
| J. M. Perkins | 1913-15 |
| William H. Sharpley | 1915-16 |
| Robert W. Speer | 1916-18 |
| W. F. R. Mills | 1918-19 |
| Dewey C. Bailey | 1919-23 |
| Benjamin F. Stapleton | 1923-31 |
| George D. Begole | 1931-35 |
| Benjamin F. Stapleton | 1935-47 |
| Quigg Newton | 1947-55 |
| Will Nicholson | 1955-59 |
| Richard Batterton | 1959-61 |
| Thomas C. Currigan | 1963-68 |
| William H. McNichols, Jr | 1968-83 |
| Federico Pena | 1983-91 |
| Wellington E. Webb | 1991-2003 |
| John Hickenlooper | 2003- |