Find the last 4 digits (ZIP+4) for an address in 78729

ZIP 78729, Austin, TX is filled in. Just type the street address.

Addresses are checked through our secure proxy. Bot checks use Cloudflare Turnstile. Each device can run 5 live checks per day; repeats of the same address are free.

ZIP Code 78729 – Austin, TX

Austin, Texas · Williamson County · Central time

ZIP code78729
CityAustin
StateTexas
CountyWilliamson CountyTravis County
Population30,460
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area9.81 sq mi
Center (lat, long)30.4572, -97.7564

Area codes in this area

512737

These are the area codes that most often serve ZIP 78729 (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

78750 Austin · 2.1 mi78717 Austin · 2.2 mi78727 Austin · 3 mi78759 Austin · 3.8 mi78728 Austin · 4.2 mi78630 Cedar Park · 5 mi78613 Cedar Park · 5.1 mi78726 Austin · 5.3 mi

About ZIP 78729

ZIP code 78729 is assigned to Austin, Texas. It crosses 2 counties; most of its land is in Williamson County. Its Census area covers about 9.81 square miles of land. The closest neighboring ZIP is 78750 (Austin), about 2.1 miles away.

Every address in 78729 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