ZIP Code 78680: Round Rock, TX
County: Williamson County
Coordinates: 30.65680, -97.60260
ZIP Type: Standard
Time Zone: Central Time (CT)
Get a reliable snapshot of the Round Rock, TX postal area 78680. This page summarizes county, coordinates, and local facts to help with services and location research.
| Primary City | Round Rock |
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| ZIP Code | 78680 |
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| County | Williamson County |
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| State | TX |
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| Latitude / Longitude | 30.65680, -97.60260 |
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| ZIP Type | Standard |
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| Time Zone | Central Time (CT) |
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| Data Updated | 2026-01-08 |
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Maps & Useful Links
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These links show the approximate center point for ZIP 78680 (not an exact boundary).
Geographic & Administrative Context
For mapping and verification, 78680 is commonly represented around 30.65680, -97.60260. These coordinates help identify the general area within Williamson County, TX.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 78680 for mail delivery and general location reference in
Williamson County,
TX.
This ZIP may extend beyond the city core into nearby communities within Williamson County.
Related ZIP Codes (Nearby)
Explore other postal codes near Round Rock within TX.
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Frequently Asked Questions
What is the primary city for ZIP code 78680?
The primary city for this ZIP code is Round Rock, located in TX.
In which county is 78680 located?
ZIP code 78680 is situated within Williamson County, TX.
What are the coordinates for 78680?
The approximate center point is 30.65680 (Latitude) and -97.60260 (Longitude).
Is ZIP code 78680 active?
This page lists ZIP 78680 as Listed based on the latest refresh date shown above.
Does ZIP 78680 cover multiple areas?
Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.
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Methodology & Data Notes
How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.
Page updated: 2026-01-08