City · Missouri · United States
Callao, MO — ZIP codes
1 ZIP code · Macon County
- City
- Callao
- County
- Macon
- State
- Missouri
- Country
- United States
- Postal code
- 63534Single source
- Coordinates
- 39.7448, -92.6351 View on OpenStreetMap
- Area code
- 660
ZIP codes (1)
| Postal code | Place name | Verification |
|---|---|---|
| 63534 | Callao | 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) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Last generated : 2026-08-21. Report an error.