City · Texas · United States
Round Rock, TX — ZIP codes
6 ZIP codes · Williamson County
- City
- Round Rock
- County
- Williamson
- State
- Texas
- Country
- United States
- Postal codes
- 786647866578680786817868278683Single source
- Coordinates
- 30.5145, -97.6680 View on OpenStreetMap
ZIP codes (6)
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. Last generated : 2026-08-21. Report an error.