Oude Postbaan is een straat te Liempde in de gemeente Boxtel en is gelegen in de Nederlandse provincie Noord-Brabant.
| Postcode | Huisnummers |
|---|---|
| 5298 AT | 34, 36, 38, 32, 30, 28, 26, 22, 20, 18, 16, 14, 12, 10, 8, 6, 4; |
| 5298 AS | 19, 21, 23, 25, 27, 29, 35, 39, 41, 17, 15, 13, 11, 9, 7, 5, 5t, 3, 1; |