| Primary City | Round Rock | |
| Population | 99,887 | |
| State | Texas | |
| County | Williamson County | |
| Current Time | ||
| Zip Codes | 78664, 78665, 78680-78683 | |
| Area Codes | 512 |
Neighbouring Zip Codes
ZIP Code: 77875
Roans Prairie, Texas
ZIP Code: 77830
Anderson, Texas
ZIP Code: 77963
Goliad, Texas
ZIP Code: 78799
Austin, Texas
ZIP Code: 78783
Austin, Texas
ZIP Code: 76513
Belton, Texas
ZIP Code: 78630
Cedar Park, Texas
ZIP Code: 78613
Cedar Park, Texas
ZIP Code: 78621
Elgin, Texas
ZIP Code: 78633
Georgetown, Texas
ZIP Code: 78628
Georgetown, Texas
ZIP Code: 76824
Bend, Texas
ZIP Code: 78634
Hutto, Texas
ZIP Code: 76305
Wichita Falls, Texas
ZIP Code: 78645
Leander, Texas
ZIP Code: 78646
Leander, Texas
ZIP Code: 78653
Manor, Texas
ZIP Code: 78691
Pflugerville, Texas
ZIP Code: 78660
Pflugerville, Texas
ZIP Code: 76574
Taylor, Texas
Neighbouring Cities
Hutto, Brushy Creek, Taylor, Pflugerville, Wells Branch, Leander, Cedar Park, Jollyville, Anderson Mill, Manor, Elgin, Lago Vista, Austin, Hornsby Bend, Belton