Find the last 4 digits (ZIP+4) for an address in 78738

ZIP 78738, Austin, TX is filled in. Just type the street address.

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ZIP Code 78738 – Austin, TX

Austin, Texas · Travis County · Central time

ZIP code78738
CityAustin
StateTexas
CountyTravis County
Population31,019
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area42.09 sq mi
Center (lat, long)30.3070, -97.9889

Area codes in this area

512737

These are the area codes that most often serve ZIP 78738 (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

78736 Austin · 4.7 mi78734 Austin · 5.6 mi78733 Austin · 6.3 mi78735 Austin · 7.6 mi78732 Austin · 7.7 mi78716 Austin · 7.8 mi78737 Austin · 9.2 mi78730 Austin · 9.7 mi

About ZIP 78738

ZIP code 78738 is assigned to Austin, Texas. It lies in Travis County. Its Census area covers about 42.09 square miles of land. The closest neighboring ZIP is 78736 (Austin), about 4.7 miles away.

Every address in 78738 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