Kasteeltuin is een straat te Houten in de gemeente Houten en is gelegen in de Nederlandse provincie Utrecht.
| Postcode | Huisnummers |
|---|---|
| 3994 ZG | 21, 23, 25, 27, 29, 31 0001, 31, 19, 17, 15, 13, 11, 9, 7, 5, 3, 1; |
| 3994 ZH | 28, 26, 24, 22, 20, 18, 16, 14, 12, 10, 8, 6, 4, 2; |