| Locality | Postal Code |
|---|---|
| Borgercompagnie, Midden-Groningen | 9632 TD, 9632 TC |
| Foxhol, Midden-Groningen | 9607 |
| Froombosch, Midden-Groningen | 9619 |
| Harkstede, Midden-Groningen | 9617 |
| Hellum, Midden-Groningen | 9627 |
| Hoogezand, Midden-Groningen | 9601, 9602, 9603 |
| Kiel-Windeweer, Midden-Groningen | 9605 |
| Kolham, Midden-Groningen | 9615 |
| Kropswolde, Midden-Groningen | 9606 |
| Luddeweer, Midden-Groningen | 9624 PB, 9624 PA |
| Meeden, Midden-Groningen | 9651 |
| Muntendam, Midden-Groningen | 9649 |
| Noordbroek, Midden-Groningen | 9635 |
| Overschild, Midden-Groningen | 9625 |
| Sappemeer, Midden-Groningen | 9611 |
| Scharmer, Midden-Groningen | 9616 |
| Schildwolde, Midden-Groningen | 9626 |
| Siddeburen, Midden-Groningen | 9628 |
| Slochteren, Midden-Groningen | 9621 |
| Steendam, Midden-Groningen | 9629 |
| Tjuchem, Midden-Groningen | 9939 |
| Tripscompagnie, Midden-Groningen | 9633 |
| Waterhuizen, Midden-Groningen | 9609 PA, 9609 PD |
| Westerbroek, Midden-Groningen | 9608 |
| Woudbloem, Midden-Groningen | 9618 |
| Zuidbroek, Midden-Groningen | 9636 |
| Postal Codes in Groningen | |
|---|---|
| Westerwolde | Westerkwartier |
| Veendam | Stadskanaal |
| Pekela | Oldambt |
| Midden-Groningen | Loppersum |
| Het Hogeland | Groningen |
| Delfzijl | Appingedam |