| Locality | Postal Code |
|---|---|
| Dunum | 26427 |
| Esens | 26427 |
| Holtgast | 26427 |
| Moorweg | 26427 |
| Neuharlingersiel | 26427 |
| Stedesdorf | 26427 |
| Werdum | 26427 |
| Postal Codes in Wittmund | |
|---|---|
| Esens, Wittmund | |
| Friedeburg, Wittmund | |
| Holtriem, Wittmund | |
| Langeoog, Wittmund | |
| Spiekeroog, Wittmund | |
| Wittmund, Wittmund | |