Find the last 4 digits (ZIP+4) for an address in 78723

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ZIP Code 78723 – Austin, TX

Austin, Texas · Travis County · Central time

ZIP code78723
CityAustin
StateTexas
CountyTravis County
Population38,129
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area7.06 sq mi
Center (lat, long)30.3042, -97.6857

Area codes in this area

512737

These are the area codes that most often serve ZIP 78723 (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

78722 Austin · 2 mi78752 Austin · 2.2 mi78751 Austin · 2.3 mi78721 Austin · 2.3 mi78712 Austin · 3.1 mi78705 Austin · 3.2 mi78702 Austin · 3.3 mi78756 Austin · 3.5 mi

About ZIP 78723

ZIP code 78723 is assigned to Austin, Texas. It lies in Travis County. Its Census area covers about 7.06 square miles of land. The closest neighboring ZIP is 78722 (Austin), about 2 miles away.

Every address in 78723 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