Duncan zipcode
| City | Duncan |
| ZIP Code | 73536 |
| Type | Company/Organization |
| State Code | OK |
| State | Oklahoma |
ZIP code of Duncan is 73536. This place is located in Oklahoma state in US. To send any postal service to Duncan, you must use 73536 zipcode.
You should avoid following 1 city name of Oklahoma to be used with the ZIP code 73536.
- Halliburton, OK