Find the last 4 digits (ZIP+4) for an address in 94542

ZIP 94542, Hayward, CA is filled in. Just type the street address.

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ZIP Code 94542 – Hayward, CA

Hayward, California · Alameda County · Pacific time

ZIP code94542
CityHayward
StateCalifornia
CountyAlameda County
Population14,871
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area8.65 sq mi
Center (lat, long)37.6553, -122.0258

Area codes in this area

510341

These are the area codes that most often serve ZIP 94542 (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

94544 Hayward · 2.3 mi94543 Hayward · 3.1 mi94541 Hayward · 3.6 mi94552 Castro Valley · 3.6 mi94587 Union City · 5.3 mi94545 Hayward · 5.7 mi94537 Fremont · 6 mi94540 Hayward · 6 mi

About ZIP 94542

ZIP code 94542 is assigned to Hayward, California. It lies in Alameda County. Its Census area covers about 8.65 square miles of land. The closest neighboring ZIP is 94544 (Hayward), about 2.3 miles away.

Every address in 94542 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