| Postmaster | Date sworn into office | |
| Consider Cushman | Sept. 11, 1856 | |
| JC Cushman | Jan. 13, 1860 | |
| Henry Falconbury | Mar. 9, 1861 | |
| JW Falconbury | Apr. 30, 1861 | |
| Joseph Trowbridge | Mar. 15, 1864 | |
| Francis Meyers | May 4, 1864 | |
| Joseph Trowbridge | Mar. 25, 1869 | |
| Wm Trowbridge | Dec. 11, 1876 | |
| Garrett F Jarrele | Apr. 16, 1883 | |
| Charles W Moore | July 11, 1889 | |
| Allen A Haag | Feb. 5, 1891 | |
| Elisha J Robinson | May 17, 1892 | |
| Name changed to Tyner | Post Office July 10th, 1894 | |
| Edward G Robinson | Feb. 17, 1899 | |
| Chase Keller | Jan. 4, 1901 | |
| James M Schroeder | Feb. 5, 1902 | |
| Ambrose E Fink | July 23, 1902 | |
| Daniel W Miller | May 21, 1905 | |
| Thomas G Stiles | May 12, 1914 | |
| Jesse E Keller | July 12, 1924 | |
| Wanda Braner | acting Oct. 30, 1950 confirmed Apr. 26, 1951 | |
| Alan L Burkholder |
Dec. 31, 1977 - March 8, 2002 | |
| Christina M Pinder OIC |
March 9, 2002 | |