In which county is ZIP code 78594 located?

ZIP 78594 is listed under Willacy County, TX.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 78594: Sebastian, TX

ZIP: 78594

County: Willacy County

Coordinates: 26.34400, -97.81230

ZIP Type: Standard

Time Zone: Central Time (CT)

Explore detailed information for ZIP code 78594 in Sebastian, TX. We include verified county details for Willacy County plus key geographic references used for mapping and logistics.

Primary City	Sebastian
ZIP Code	78594
County	Willacy County
State	TX
Latitude / Longitude	26.34400, -97.81230
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 78594 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 78594 is commonly represented around 26.34400, -97.81230. These coordinates help identify the general area within Willacy County, TX.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 78594 for mail delivery and general location reference in Willacy County, TX.

This ZIP may extend beyond the city core into nearby communities within Willacy County.

Related ZIP Codes (Nearby)

Explore other postal codes near Sebastian within TX.

Frequently Asked Questions

What is the primary city for ZIP code 78594?

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

In which county is 78594 located?

ZIP code 78594 is situated within Willacy County, TX.

What are the coordinates for 78594?

The approximate center point is 26.34400 (Latitude) and -97.81230 (Longitude).

Is ZIP code 78594 active?

This page lists ZIP 78594 as Listed based on the latest refresh date shown above.

Does ZIP 78594 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