Find the last 4 digits (ZIP+4) for an address in 78634

ZIP 78634, Hutto, TX is filled in. Just type the street address.

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ZIP Code 78634 – Hutto, TX

Hutto, Texas · Williamson County · Central time

ZIP code78634
CityHutto
StateTexas
CountyWilliamson CountyTravis County
Population46,413
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area56.39 sq mi
Center (lat, long)30.5599, -97.5441

Area codes in this area

512737

These are the area codes that most often serve ZIP 78634 (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

78665 Round Rock · 5.5 mi78664 Round Rock · 7.2 mi78680 Round Rock · 7.5 mi78682 Round Rock · 7.5 mi78683 Round Rock · 7.5 mi78626 Georgetown · 8.1 mi78674 Weir · 8.3 mi78660 Pflugerville · 8.8 mi

About ZIP 78634

ZIP code 78634 is assigned to Hutto, Texas. It crosses 2 counties; most of its land is in Williamson County. Its Census area covers about 56.39 square miles of land. The closest neighboring ZIP is 78665 (Round Rock), about 5.5 miles away.

Every address in 78634 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