| Locality | Post Code |
|---|---|
| Catherine, Marengo | 36728 |
| Dayton, Marengo | 36738 |
| Demopolis, Marengo | 36732 |
| Dixons Mills, Marengo | 36736 |
| Faunsdale, Marengo | 36738 |
| Gallion, Marengo | 36742 |
| Jefferson, Marengo | 36745 |
| Linden, Marengo | 36748 |
| Magnolia, Marengo | 36754 |
| Myrtlewood, Marengo | 36763 |
| Nanafalia, Marengo | 36764 |
| Providence, Marengo | 36742 |
| Safford, Marengo | 36773 |
| Sweet Water, Marengo | 36782 |
| Thomaston, Marengo | 36783 |
| Thomasville, Marengo | 36784 |