In which county is ZIP code 77456 located?

ZIP 77456 is listed under Matagorda, TX.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 77456: Markham, TX

ZIP: 77456

County: Matagorda

Coordinates: 28.95470, -96.09280

ZIP Type: Standard

Time Zone: Central Time (CT)

Get a reliable snapshot of the Markham, TX postal area 77456. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Markham
ZIP Code	77456
County	Matagorda
State	TX
Latitude / Longitude	28.95470, -96.09280
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 77456 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 77456 is commonly represented around 28.95470, -96.09280. These coordinates help identify the general area within Matagorda, TX.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 77456 for mail delivery and general location reference in Matagorda, TX.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Markham within TX.

Frequently Asked Questions

What is the primary city for ZIP code 77456?

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

In which county is 77456 located?

ZIP code 77456 is situated within Matagorda, TX.

What are the coordinates for 77456?

The approximate center point is 28.95470 (Latitude) and -96.09280 (Longitude).

Is ZIP code 77456 active?

This page lists ZIP 77456 as Listed based on the latest refresh date shown above.

Does ZIP 77456 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