The Historical Post Office in present day St. Hedwig has been located at several sites and has possessed two official names: Cottage Hill and St. Hedwig. Taken from the records of the Postmaster General of the United States, this is a list of the individuals who served as their Postmasters.
Cottage Hill – Postmasters
| 20 July 1860 | William A. Jackson |
| 23 January 1867 | Discontinued |
| 23 October 1871 | Re-established |
| 23 October 1871 | John Humphrey |
| 18 June 1877 | Moved to St. Hedwig, Texas |
St. Hedwig – Postmasters
| 18 June 1877 | Frank Felix |
| 5 April 1881 | (Mrs.) Frances Kotula |
| 17 August 1881 | William Singer (Saenger) |
| 18 August 1883 | Joseph M. Zizik |
| 4 March 1895 | Theo Felix |
| 6 January 1900 | Declined by Joseph R. |
| Dunstin (Dornstin) | |
| 31 May 1900 | Discontinued – paper to Adkins |
| 13 August 1900 | Re-established |
| 13 August 1900 | Andreas Strzelczyk |
| 5 January 1916 | Phillip Cellmer |
| 31 May 1953 | Conrad Cellmer |
