Find the last 4 digits (ZIP+4) for an address in 78578

ZIP 78578, Port Isabel, TX is filled in. Just type the street address.

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ZIP Code 78578 – Port Isabel, TX

Port Isabel, Texas · Cameron County · Central time

ZIP code78578
CityPort Isabel
StateTexas
CountyCameron County
Population10,016
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area56.95 sq mi
Center (lat, long)26.0440, -97.3066

Area codes in this area

956

These are the area codes that most often serve ZIP 78578 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

78521 Brownsville · 6.9 mi78566 Los Fresnos · 8.2 mi78526 Brownsville · 9.5 mi78523 Brownsville · 14 mi78575 Olmito · 15.1 mi78522 Brownsville · 15.4 mi78597 South Padre Island · 15.9 mi78520 Brownsville · 16.1 mi

About ZIP 78578

ZIP code 78578 is assigned to Port Isabel, Texas. It lies in Cameron County. Its Census area covers about 56.95 square miles of land. The closest neighboring ZIP is 78521 (Brownsville), about 6.9 miles away.

Every address in 78578 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources