10 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 36732 | Demopolis | 8,339 |
| 36742 | Gallion | 2,841 |
| 36748 | Linden | 2,358 |
| 36782 | Sweet Water | 1,912 |
| 36736 | Dixons Mills | 1,372 |
| 36738 | Faunsdale | 933 |
| 36783 | Thomaston | 637 |
| 36754 | Magnolia | 352 |
| 36763 | Myrtlewood | 157 |
| 36764 | Nanafalia | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 10 ZCTAs in Marengo County, Alabama (US Census).