78664 postal code
United StatesUpdated 2026-11-09Round Rock, TexasWilliamson5 digits
Postal code details
1 placeCode
78664
Place
Round Rock
Region
Texas
County
Williamson
Coordinates
30.5145, -97.668
Accuracy
4 / 6
Country
United States
Location
OpenStreetMap ↗
30.5145, -97.668© OpenStreetMap
Ad slot · 300×250
Places under this code
1| Place | Region | County | Coordinates |
|---|---|---|---|
| Round Rock | Texas | Williamson | 30.5145, -97.668 |
Same code in other countries
2| Country | Place | Region |
|---|---|---|
| DE Germany | Eschbronn | Baden-Württemberg |
| UA Ukraine | Черганівка | Ivano-Frankivska |
FAQ
Which city is 78664 in?
Round Rock, Texas, United States.
What are the coordinates of 78664?
30.5145, -97.668
Is 78664 used in other countries?
Yes, 2 other countries.
Updated 2026-11-09. Attribution in Data & license.