Since its founding in 1853 the Historical Post Office in present day La Vernia has had three official names: Post Oak, Lavernia and La Vernia. Taken from the records of the Postmaster General of the United States is a list of the individuals who have served as postmaster for this location.
Post Oak Postmasters
| 2 February 1853 | Joseph G. Brown |
| 8 April 1854 | Claiborne Rector |
| 29 April 1857 | Connally F. Henderson |
| 7 May 1859 | Name of Post Office changed to Lavernia |
Lavernia Postmasters
| 7 May 1859 | Connally F. Henderson |
| 4 October 1860 | William Sutherland |
| 12 July 1861 | William Sutherland (CSA) |
| 12 October 1861 | Walter F. Sutherland (CSA) |
| 9 August 1866 | John A. Fraser |
| 25 January 1867 | Miss Sallie E. Trent |
| 11 May 1868 | Lawrence H. Wall |
| 28 March 1870 | James H. McMahan (McMahon) |
| 8 July 1880 | Herman Suhre |
| 26 March 1888 | Chauncey Canfield |
| 26 December 1889 | Herman Suhre |
| 20 March 1891 | William E. Smith |
| 15 October 1897 | Hugo Kott |
| 12 February 1913 | Charles A. Tiner |
| 10 August 1922 | James W. McBee |
| 13 January 1931 | James W. McBee |
| 16 April 1936 | William M. Wiseman |
| 1 May 1937 | Name of Post Office changed to La Vernia |
La Vernia Postmasters
| 18 June 1937 | Edna B. Smith |
| 10 September 1938 | Walter L. Wiseman |
| 16 December 1942 | Edna B. Smith |
| 15 October 1945 | Walter L. Wiseman |
| 19 November 1945 | Walter L. Wiseman |
| 15 January 1950 | Edna B. Smith |
| 8 May 1950 | Edna B. Smith |
| 30 April 1963 | Samuel Toney |
| 26 May 1964 | Samuel Toney |
