In which county is ZIP code 78609 located?

ZIP 78609 is listed under Llano, TX.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 78609: Buchanan Dam, TX

ZIP: 78609

County: Llano

Coordinates: 30.75380, -98.42950

ZIP Type: Standard

Time Zone: Central Time (CT)

This profile provides an in-depth look at ZIP code 78609, serving Buchanan Dam in TX. It lies in Llano and supports delivery, planning, and address verification.

Primary City	Buchanan Dam
ZIP Code	78609
County	Llano
State	TX
Latitude / Longitude	30.75380, -98.42950
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 78609 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 78609 are listed as 30.75380 / -98.42950, useful for GPS and service checks in and around Buchanan Dam, TX.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 78609 for mail delivery and general location reference in Llano, TX.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Buchanan Dam.

Related ZIP Codes (Nearby)

Explore other postal codes near Buchanan Dam within TX.

Frequently Asked Questions

What is the primary city for ZIP code 78609?

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

In which county is 78609 located?

ZIP code 78609 is situated within Llano, TX.

What are the coordinates for 78609?

The approximate center point is 30.75380 (Latitude) and -98.42950 (Longitude).

Is ZIP code 78609 active?

This page lists ZIP 78609 as Listed based on the latest refresh date shown above.

Does ZIP 78609 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