Round Rock, Texas ZIP codes
What is the ZIP code for Round Rock, TX?
6 ZIP codes, 78664 to 78683
3 for street addresses · 2 PO Box only · 1 for single organizations
Round Rock is in Williamson County, Texas. USPS uses 6 ZIP codes for Round Rock, 3 of them for street addresses. About 184,922 people live in Round Rock ZIP codes; the most populated is 78665 with 66,171 residents. The city is in the Central Time zone and uses area codes 512 and 737.
| City | Round Rock, TX |
|---|---|
| State | Texas |
| County | Williamson County |
| ZIP codes | 6 |
| Population (ZIP areas) | about 184,922 |
| Time zone | Central Time · now |
| Area codes | 512, 737 |
All Round Rock ZIP codes
| ZIP code | Type | Population | Median income |
|---|---|---|---|
| 78664 | Standard | 62,060 | $87,417 |
| 78665 | Standard | 66,171 | $122,680 |
| 78680 | PO Box only | – | – |
| 78681 | Standard | 56,691 | $137,819 |
| 78682 | Unique | – | – |
| 78683 | PO Box only | – | – |
Population and income: U.S. Census Bureau, American Community Survey 5-year estimates. PO Box and single-organization ZIP codes have no residents.
Cities near Round Rock
- Pflugerville, TX 5.5 mi
- Hutto, TX 6.3 mi
- Cedar Park, TX 8.9 mi
- Georgetown, TX 10.9 mi
- Leander, TX 14.3 mi
- Manor, TX 14.6 mi
- Austin, TX 15.4 mi
- Taylor, TX 16.1 mi
- Coupland, TX 18.2 mi
- Liberty Hill, TX 18.6 mi
Questions
- What is the ZIP code for Round Rock, TX?
- Round Rock has 6 ZIP codes: 78664, 78665, 78680, 78681, 78682 and 78683. The right one depends on the street address.
- How many ZIP codes does Round Rock have?
- 6: 3 standard ZIP codes for street addresses, 2 for PO Boxes only and 1 assigned to single organizations.
- Which Round Rock ZIP code has the most people?
- 78665, with about 66,171 residents, followed by 78664 (62,060).
- What county is Round Rock, TX in?
- Round Rock ZIP codes are in Williamson County.
- What area code is Round Rock, TX?
- Round Rock uses area codes 512 and 737.