ZIP Code 78665
Round Rock, Texas
ZIP Code Information
| ZIP Code | 78665 |
|---|---|
| City | Round Rock |
| State | Texas (TX) |
| County | Williamson |
| Timezone |
America/Chicago (UTC-5)
Details
|
| Area Codes (state) | 210, 214, 281, 512, 713, 817, 915, 936, 972 Details |
| Population | 43,715 Details |
| Median Household Income | $88,900 Demographics |
Population and income figures: US Census Bureau, 2012–2016 ACS 5-year estimates.
ZIP code 78665 is a five-digit postal code used by the United States Postal Service for addresses in Round Rock, Texas. The ZIP lies within Williamson County. Clocks here follow the America/Chicago time zone (UTC-5).
About 43,715 people live in this ZIP code, and the median household income is roughly $88,900 a year. Figures come from the U.S. Census Bureau American Community Survey and are refreshed as new five-year estimates are released.
What you can do with ZIP code 78665
- Write a mailing address: Round Rock, TX 78665. The ZIP goes last, after the state abbreviation.
- Check whether a shipping or delivery quote applies to this area — most US carriers price by ZIP code rather than by city.
- Look up the local time zone before scheduling a call — the ZIP tells you which zone applies to that address.
- Compare the ZIP with neighbouring codes to see how population and income shift block by block.
Location Map
Full mapNearby ZIP Codes
Radius search| ZIP Code | City | Distance | |
|---|---|---|---|
| 78664 | Round Rock | 0 km | Distance |
| 78681 | Round Rock | 1.3 km | Distance |
| 78717 | Austin | 7.6 km | Distance |
| 78764 | Austin | 7.7 km | Distance |
| 78728 | Austin | 8.2 km | Distance |
| 78660 | Pflugerville | 8.8 km | Distance |
| 78691 | Pflugerville | 9.5 km | Distance |
| 78634 | Hutto | 9.7 km | Distance |
| 78727 | Austin | 11.1 km | Distance |
| 78729 | Austin | 11.9 km | Distance |
Nearby Cities
Frequently Asked Questions
ZIP code 78665 is located in Round Rock, Texas.
ZIP code 78665 is in Williamson county, Texas.
ZIP code 78665 is in the America/Chicago timezone.