Armstrong zipcode
| City | Armstrong |
| ZIP Code | 78338 |
| Type | PO Box |
| State Code | TX |
| State | Texas |
ZIP code of Armstrong is 78338. This place is located in Texas state in US. To send any postal service to Armstrong, you must use 78338 zipcode.
You should avoid following 2 city names of Texas to be used with the ZIP code 78338.
- Norias, TX
- Rudolph, TX