City · Oklahoma · United States
Mill Creek, OK — ZIP codes
1 ZIP code · Johnston County
- City
- Mill Creek
- County
- Johnston
- State
- Oklahoma
- Country
- United States
- Postal code
- 74856Single source
- Coordinates
- 34.3098, -96.7884 View on OpenStreetMap
- Area code
- 580
ZIP codes (1)
| Postal code | Place name | Verification |
|---|---|---|
| 74856 | Mill Creek | Single source |
Sources and verification
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS). Last generated : 2026-08-21. Report an error.