Port Isabel, TX ZIP code
The ZIP code for Port Isabel (also written Pt. Isabel), Texas is 78578. It is in Cameron County.
- Population in these ZIPs
- 10,016
- Avg. median income
- $51,900population-weighted
- Typical home value
- $263,200population-weighted
- Metro area
- Brownsville-Harlingen, TX
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Port Isabel, TX ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 78578 | 10,016 | $51,880 | $263,200 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Port Isabel
- Los Fresnos 8 mi
- Brownsville 12 mi
- Olmito 15 mi
- South Padre Island 16 mi
- Rio Hondo 20 mi
- San Benito 22 mi
- Los Indios 27 mi
- Harlingen 28 mi
- Combes 30 mi
- La Feria 33 mi
- Santa Maria 34 mi
- Port Mansfield 35 mi
Frequently asked questions
What is the ZIP code for Port Isabel, TX?
The ZIP code for Port Isabel, TX is 78578.
What county is Port Isabel, Texas in?
Port Isabel ZIP codes are in Cameron County.