Find the last 4 digits (ZIP+4) for an address in 78742

ZIP 78742, Austin, TX is filled in. Just type the street address.

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ZIP Code 78742 – Austin, TX

Austin, Texas · Travis County · Central time

ZIP code78742
CityAustin
StateTexas
CountyTravis County
Population847
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area5.91 sq mi
Center (lat, long)30.2424, -97.6592

Area codes in this area

512737

These are the area codes that most often serve ZIP 78742 (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

78721 Austin · 2.5 mi78725 Austin · 3.1 mi78741 Austin · 3.4 mi78702 Austin · 3.6 mi78724 Austin · 4.3 mi78723 Austin · 4.6 mi78722 Austin · 4.7 mi78712 Austin · 5.2 mi

About ZIP 78742

ZIP code 78742 is assigned to Austin, Texas. It lies in Travis County. Its Census area covers about 5.91 square miles of land. The closest neighboring ZIP is 78721 (Austin), about 2.5 miles away.

Every address in 78742 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