ZIP Code 78683: Round Rock, TX
County: Williamson County
Coordinates: 30.65680, -97.60260
ZIP Type: Standard
Time Zone: Central Time (CT)
Explore detailed information for ZIP code 78683 in Round Rock, TX. We include verified county details for Williamson County plus key geographic references used for mapping and logistics.
| Primary City | Round Rock |
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| ZIP Code | 78683 |
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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 78683 (not an exact boundary).
Geographic & Administrative Context
The geographic center of ZIP code 78683 is approximately 30.65680 (latitude) and -97.60260 (longitude). This location sits within Williamson County, contributing to regional planning across TX.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 78683 for mail delivery and general location reference in
Williamson County,
TX.
Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Round Rock.
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 78683?
The primary city for this ZIP code is Round Rock, located in TX.
In which county is 78683 located?
ZIP code 78683 is situated within Williamson County, TX.
What are the coordinates for 78683?
The approximate center point is 30.65680 (Latitude) and -97.60260 (Longitude).
Is ZIP code 78683 active?
This page lists ZIP 78683 as Listed based on the latest refresh date shown above.
Does ZIP 78683 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