ZIP Code 77640: Port Arthur, TX
County: Jefferson
Coordinates: 29.87090, -93.96430
ZIP Type: Standard
Time Zone: Central Time (CT)
Get a reliable snapshot of the Port Arthur, TX postal area 77640. This page summarizes county, coordinates, and local facts to help with services and location research.
| Primary City | Port Arthur |
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| ZIP Code | 77640 |
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| County | Jefferson |
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| State | TX |
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| Latitude / Longitude | 29.87090, -93.96430 |
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| ZIP Type | Standard |
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| Time Zone | Central Time (CT) |
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| Data Updated | 2026-01-08 |
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Maps & Useful Links
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These links show the approximate center point for ZIP 77640 (not an exact boundary).
Geographic & Administrative Context
The geographic center of ZIP code 77640 is approximately 29.87090 (latitude) and -93.96430 (longitude). This location sits within Jefferson, contributing to regional planning across TX.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 77640 for mail delivery and general location reference in
Jefferson,
TX.
Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Port Arthur.
Related ZIP Codes (Nearby)
Explore other postal codes near Port Arthur within TX.
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Frequently Asked Questions
What is the primary city for ZIP code 77640?
The primary city for this ZIP code is Port Arthur, located in TX.
In which county is 77640 located?
ZIP code 77640 is situated within Jefferson, TX.
What are the coordinates for 77640?
The approximate center point is 29.87090 (Latitude) and -93.96430 (Longitude).
Is ZIP code 77640 active?
This page lists ZIP 77640 as Listed based on the latest refresh date shown above.
Does ZIP 77640 cover multiple areas?
Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.
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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