Welhaak is een straat te Vriezenveen in de gemeente Twenterand en is gelegen in de Nederlandse provincie Overijssel.
| Postcode | Huisnummers |
|---|---|
| 7671 NS | 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 17; |
| 7672 AB | 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51; |