ZIP Code 78521 – Brownsville, TX
Brownsville, Texas · Cameron County · Central time
| ZIP code | 78521 |
|---|---|
| City | Brownsville |
| State | Texas |
| County | Cameron County |
| Population | 87,380 |
| Time zone | Central · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 93.62 sq mi |
| Center (lat, long) | 25.9439, -97.3179 |
Area codes in this area
These are the area codes that most often serve ZIP 78521 (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
About ZIP 78521
ZIP code 78521 is assigned to Brownsville, Texas. It lies in Cameron County. Its Census area covers about 93.62 square miles of land. The closest neighboring ZIP is 78578 (Port Isabel), about 6.9 miles away.
Every address in 78521 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