In which county is ZIP code 78578 located?

ZIP 78578 is listed under Cameron, TX.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 78578: Port Isabel, TX

ZIP: 78578

County: Cameron

Coordinates: 26.05390, -97.31250

ZIP Type: Standard

Time Zone: Central Time (CT)

Explore detailed information for ZIP code 78578 in Port Isabel, TX. We include verified county details for Cameron plus key geographic references used for mapping and logistics.

Primary City	Port Isabel
ZIP Code	78578
County	Cameron
State	TX
Latitude / Longitude	26.05390, -97.31250
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 78578 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 78578 are listed as 26.05390 / -97.31250, useful for GPS and service checks in and around Port Isabel, TX.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 78578 for mail delivery and general location reference in Cameron, TX.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Port Isabel.

Related ZIP Codes (Nearby)

Explore other postal codes near Port Isabel within TX.

Frequently Asked Questions

What is the primary city for ZIP code 78578?

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

In which county is 78578 located?

ZIP code 78578 is situated within Cameron, TX.

What are the coordinates for 78578?

The approximate center point is 26.05390 (Latitude) and -97.31250 (Longitude).

Is ZIP code 78578 active?

This page lists ZIP 78578 as Listed based on the latest refresh date shown above.

Does ZIP 78578 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