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zipcodes.pro — CITY/TX/PORT-ISABEL

Port Isabel ZIP code, Texas

The ZIP code for Port Isabel, TX is 78578, and its area code is 956.

USPS city name
1 ZIP code
Overlapping the city
2 more
Population
5,111
Area code
956
State
Texas

Mail addressed to Port Isabel uses the ZIP code above. 2 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Port Isabel in numbers

About 5,111 people live in Port Isabel, in 2,067 households. The median household income is $32,222 a year, 59% below the Texas median of $78,476 (US: $80,734). The median owner-occupied home is valued at $182,600 (36% below the Texas median), and median gross rent is $748 a month. The median age is 37.8; 17.8% of adults 25 and over hold a bachelor's degree or higher (33.8% across Texas); the average commute takes 14 minutes.

Population5,111Port Isabel5,111
Households2,067Port Isabel2,067
Median age37.8Port Isabel37.8Texas35.6US 38.9
Median household income$32,222Port Isabel$32,222Texas$78,476US $80,734
Median home value$182,600Port Isabel$182,600Texas$283,800US $332,700
Median gross rent$748Port Isabel$748Texas$1,403US $1,413
Bachelor's degree or higher17.8%Port Isabel17.8%Texas33.8%US 35.7%
Mean commute13.7 minPort Isabel13.7 minTexas26.7 minUS 26.4 min
Population density753 / sq miPort Isabel753 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Port Isabel city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Port Isabel

ZIP codes with the USPS city name Port Isabel
ZIP City Type Population Median income Median home
78578 Port Isabel , TX Standard 10,016 $51,880 $196,200

Other ZIP codes overlapping Port Isabel

These ZIP codes cover part of Port Isabel but are addressed as somewhere else.

ZIP codes overlapping Port Isabel
ZIP City Type Population Median income Median home
78566 Los Fresnos , TX Standard 25,110 $60,187 $154,300
78597 South Padre Island , TX Standard 2,935 $68,421 $527,200

Map of Port Isabel ZIP codes

78578

The ZIP codes of Port Isabel, TX, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Port Isabel

The nearest larger towns are Brownsville (189,177 people, 14 mi), Los Fresnos (8,291 people, 15 mi) and Cameron Park (5,955 people, 16 mi).

Towns near Port Isabel
TownPopulationDistance
Laguna Vista 3,673 4.3 mi
South Padre Island 2,891 6.2 mi
Brownsville 189,177 13.5 mi
Los Fresnos 8,291 15.0 mi
Laureles 4,224 15.5 mi
Cameron Park 5,955 15.7 mi
Rancho Viejo 2,849 19.3 mi
Encantada-Ranchito-El Calaboz 2,552 24.3 mi
San Benito 24,709 25.1 mi
La Paloma 2,797 25.4 mi
Harlingen 72,087 29.3 mi

More nearby: every ZIP code in Cameron County · Texas ZIP codes

Cite this page

zipcodes.pro. “Port Isabel, TX ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/tx/port-isabel

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