| County | CALDWELL |
| Zip Code Type | PO BOX ONLY |
Local Information
| City/State | County |
|---|---|
| AUSTIN, TX 78710 | TRAVIS |
| AUSTIN, TX 78709 | TRAVIS |
| AUSTIN, TX 78708 | TRAVIS |
| PFLUGERVILLE, TX 78691 | TRAVIS |
| ROUND ROCK, TX 78680 | WILLIAMSON |
| ROUND ROCK, TX 78681 | WILLIAMSON |
| ROUND ROCK, TX 78682 | WILLIAMSON |
Water Quality Data
Visit MyTapWater to get the water quality data for zip code 78661.