In which county is ZIP code 78646 located?

ZIP 78646 is listed under Williamson County, TX.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 78646: Leander, TX

ZIP: 78646

County: Williamson County

Coordinates: 30.57880, -97.85310

ZIP Type: Standard

Time Zone: Central Time (CT)

Get a reliable snapshot of the Leander, TX postal area 78646. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Leander
ZIP Code	78646
County	Williamson County
State	TX
Latitude / Longitude	30.57880, -97.85310
ZIP Type	Standard
Time Zone	Central Time (CT)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 78646 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 78646 is approximately 30.57880 (latitude) and -97.85310 (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 78646 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 Leander within TX.

Frequently Asked Questions

What is the primary city for ZIP code 78646?

The primary city for this ZIP code is Leander, located in TX.

In which county is 78646 located?

ZIP code 78646 is situated within Williamson County, TX.

What are the coordinates for 78646?

The approximate center point is 30.57880 (Latitude) and -97.85310 (Longitude).

Is ZIP code 78646 active?

This page lists ZIP 78646 as Listed based on the latest refresh date shown above.

Does ZIP 78646 cover multiple areas?

Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.

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