Find the last 4 digits (ZIP+4) for an address in 78703

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ZIP Code 78703 – Austin, TX

Austin, Texas · Travis County · Central time

ZIP code78703
CityAustin
StateTexas
CountyTravis County
Population23,483
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area5.62 sq mi
Center (lat, long)30.2933, -97.7661

Area codes in this area

512737

These are the area codes that most often serve ZIP 78703 (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

78705 Austin · 1.6 mi78712 Austin · 2.1 mi78701 Austin · 2.1 mi78713 Austin · 2.3 mi78714 Austin · 2.3 mi78715 Austin · 2.3 mi78766 Austin · 2.3 mi78767 Austin · 2.3 mi

About ZIP 78703

ZIP code 78703 is assigned to Austin, Texas. It lies in Travis County. Its Census area covers about 5.62 square miles of land. The closest neighboring ZIP is 78705 (Austin), about 1.6 miles away.

Every address in 78703 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