Round Rock Zip Codes - Williamson County TX

Round Rock, TX Zip Code Map

Round Rock, TX is a city located in Williamson County, Texas and has a land area of 63.88 square miles (165.45 km2). The water area for the city is 0.59 square miles or 1.53 km2. There are 6 total unique zip codes in Round Rock, Texas. The area code(s) for Round Rock is 512/737.

Zip Codes for Round Rock, TX (6)
Zip Code
 City County
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78664 Round Rock Williamson
78665 Round Rock Williamson
78680 Round Rock Williamson
78681 Round Rock Williamson
78682 Round Rock Williamson
78683 Round Rock Williamson

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