Duncan zipcode
| City | Duncan |
| ZIP Code | 73533 |
| Type | Standard |
| State Code | OK |
| State | Oklahoma |
ZIP code of Duncan is 73533. This place is located in Oklahoma state in US. To send any postal service to Duncan, you must use 73533 zipcode.
The ZIP code 73533 is also used with 1 more city name of Oklahoma.
- Empire City, OK