ZIP Code 78664 — Round Rock, Texas
ZIP code 78664 belongs to Round Rock, Texas (county: Williamson). It sits at latitude 30.5145, longitude -97.668 in the America/Chicago time zone.
| Field | Value |
|---|---|
| ZIP code | 78664 |
| City / place | Round Rock |
| State | Texas |
| County | Williamson |
| Coordinates | 30.5145, -97.668 |
| Time zone | America/Chicago |
| City population | 115,997 |
| ZIP type | PO box / unique |
| Telephone area codes | 512, 737 |
What is ZIP code 78664?
78664 is a five-digit ZIP code used by the United States Postal Service for Round Rock, Texas. It is one of 6 ZIP codes associated with Round Rock in this dataset. The delivery area is served from the local post office network, so the ZIP can cover more than one neighbourhood or even cross a city line.
ZIP codes in the same city
Area codes and city profile
Telephone area codes serving Round Rock: 512, 737. For population, county and county-seat details, see Round Rock and all places in Texas.
Nearby ZIP codes
78665 0.0 km · Round Rock78681 1.3 km · Round Rock78717 7.6 km · Austin78764 7.7 km · Austin78728 8.2 km · Austin78660 8.8 km · Pflugerville78691 9.5 km · Pflugerville78634 9.7 km · Hutto
Frequently asked questions
What city is ZIP code 78664 in?
ZIP code 78664 is in Round Rock, Texas.
What county is 78664 in?
78664 belongs to Williamson in Texas.
What time zone is ZIP code 78664 in?
78664 is in the America/Chicago time zone.