In which county is ZIP code 78551 located?

ZIP 78551 is listed under Cameron, TX.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 78551: Harlingen, TX

ZIP: 78551

County: Cameron

Coordinates: 26.24470, -97.72060

ZIP Type: Standard

Time Zone: Central Time (CT)

Explore detailed information for ZIP code 78551 in Harlingen, TX. We include verified county details for Cameron plus key geographic references used for mapping and logistics.

Primary City	Harlingen
ZIP Code	78551
County	Cameron
State	TX
Latitude / Longitude	26.24470, -97.72060
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 78551 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 78551 is approximately 26.24470 (latitude) and -97.72060 (longitude). This location sits within Cameron, contributing to regional planning across TX.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 78551 for mail delivery and general location reference in Cameron, TX.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Harlingen within TX.

Frequently Asked Questions

What is the primary city for ZIP code 78551?

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

In which county is 78551 located?

ZIP code 78551 is situated within Cameron, TX.

What are the coordinates for 78551?

The approximate center point is 26.24470 (Latitude) and -97.72060 (Longitude).

Is ZIP code 78551 active?

This page lists ZIP 78551 as Listed based on the latest refresh date shown above.

Does ZIP 78551 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