OLD ROUND ROCK Zip Code (TX)


The Zipcode for Old Round Rock is 78664. Old Round Rock is in Williamson, Texas in the South Central region of the USA. It is located about 21 miles north-northeast of TX's capital city of Austin.

Old Round Rock

78664

Williamson

Texas Zip Codes

USA

Cities in Texas that start with O

UNITED HERITAGE CU

301 MAYS XING

ROUND ROCK, TX, 78664-6787

  • Qpzm Zip Codes Texas Suburb of the Day: Texline -> Dallam -> Texas