| County Name | Williamson County |
| FIPS Code | 48491 |
| Population | 422679 |
| Unemployment Rate | 2.5% |
| Time Zone: | Central Daylight Time |
List of All Zipcodes in Williamson County, Texas | |||||||
|---|---|---|---|---|---|---|---|
| ZIP Code | ZIP Code Name | Population | ZIP Type | ||||
| Bartlett | 3317 | Non-Unique | ||||
| Florence | 4058 | Non-Unique | ||||
| Granger | 2540 | Non-Unique | ||||
| Jarrell | 3870 | Non-Unique | ||||
| Taylor | 17661 | Non-Unique | ||||
| Thorndale | 3046 | Non-Unique | ||||
| Thrall | 1766 | Non-Unique | ||||
| Cedar Park | 65099 | Non-Unique | ||||
| Coupland | 1290 | Non-Unique | ||||
| Georgetown | 25996 | Non-Unique | ||||
| Georgetown | 23727 | Non-Unique | ||||
| Georgetown | 19349 | Non-Unique | ||||
| Hutto | 22791 | Non-Unique | ||||
| Leander | 44295 | Non-Unique | ||||
| Liberty Hill | 9467 | Non-Unique | ||||
| Pflugerville | 68789 | Non-Unique | ||||
| Round Rock | 52932 | Non-Unique | ||||
| Round Rock | 35985 | Non-Unique | ||||
| Round Rock | 50606 | Non-Unique | ||||
| Austin | 22538 | Non-Unique | ||||
| Austin | 26689 | Non-Unique | ||||
| Austin | 20299 | Non-Unique | ||||
| Austin | 27108 | Non-Unique | ||||
| Austin | 26814 | Non-Unique | ||||
| Schwertner | 26 | PO Box | ||||
| Georgetown | N/A | PO Box | ||||
| Cedar Park | N/A | PO Box | ||||
| Leander | N/A | PO Box | ||||
| Walburg | N/A | PO Box | ||||
| Weir | N/A | PO Box | ||||
| Round Rock | N/A | PO Box | ||||
| Round Rock | N/A | PO Box | ||||
| Round Rock | N/A | Unique | ||||
| List of Counties that Border Williamson County, Texas |
|---|
| Bastrop, TX |
| Bell, TX |
| Burnet, TX |
| Lee, TX |
| Milam, TX |
| Travis, TX |
| Williamson, TX |