Find the last 4 digits (ZIP+4) for an address in 78728

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ZIP Code 78728 – Austin, TX

Austin, Texas · Travis County · Central time

ZIP code78728
CityAustin
StateTexas
CountyTravis CountyWilliamson County
Population26,777
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area7.75 sq mi
Center (lat, long)30.4538, -97.6867

Area codes in this area

512737

These are the area codes that most often serve ZIP 78728 (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

78764 Austin · 1.7 mi78727 Austin · 2.5 mi78691 Pflugerville · 4.1 mi78729 Austin · 4.2 mi78664 Round Rock · 4.3 mi78717 Austin · 4.7 mi78758 Austin · 4.7 mi78753 Austin · 4.9 mi

About ZIP 78728

ZIP code 78728 is assigned to Austin, Texas. It crosses 2 counties; most of its land is in Travis County. Its Census area covers about 7.75 square miles of land. The closest neighboring ZIP is 78764 (Austin), about 1.7 miles away.

Every address in 78728 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