Kloosterhorn is een straat te Heiligerlee in de gemeente Oldambt en is gelegen in de Nederlandse provincie Groningen.
| Postcode | Huisnummers |
|---|---|
| 9677 PH | 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 44, 46, 48, 50, 52, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 5A, 4, 3, 3A, 2, 1; |