Port Isabel, TX ZIP Codes & Directory
Port Isabel is an incorporated city in Grayson County, Texas. Browse all active 5-digit USPS postal codes serving Port Isabel and surrounding Grayson County delivery districts.
All ZIP Codes in Port Isabel, TX
1 CodesAbout Port Isabel Mail Delivery & Postal Administration
ZIP codes in Port Isabel are administered by the United States Postal Service. Delivery routes are coordinated through regional Sectional Center Facilities (SCFs) servicing Grayson County and surrounding Texas metropolitan districts.
Frequently Asked Questions About Port Isabel, TX ZIP Codes
How many ZIP codes serve Port Isabel, Texas? ▾
Port Isabel, Texas is served by 1 active USPS postal delivery codes: 78181.
What county is Port Isabel located in? ▾
Port Isabel is an incorporated city located within Grayson County, Texas.
What is the population and demographic size of Port Isabel? ▾
According to U.S. Census Bureau data, Port Isabel has an estimated population of 19,119 residents and is situated within the Grayson Area.
How does mail sorting and delivery work in Port Isabel? ▾
Mail delivery in Port Isabel is operated by the United States Postal Service through regional Sectional Center Facility (SCF) distribution plants servicing Grayson County and surrounding Texas counties.