Hayward, California

Hayward, California, in Alameda County, has ZIP codes 94540, 94541, 94542, 94543, 94544, 94545 and others, and area code 510, with 341 as an overlay.

ZIP codes: 94540, 94541, 94542, 94543 …
Area codes: 510, 341
County: Alameda County
State: California
Time zone: Pacific Time
Coordinates: 37.6618, -122.0321

ZIP codes in Hayward

ZIP code	Post office	County	Area codes
94540^*	Hayward	Alameda County	510, 341
94541	Hayward	Alameda County	510, 341
94542	Hayward	Alameda County	510, 341
94543^*	Hayward	Alameda County	510, 341
94544	Hayward	Alameda County	510, 341
94545	Hayward	Alameda County	510, 341
94557^*	Hayward	Alameda County	510, 341

* No mapped delivery area: P.O. boxes or a single organization. Area codes are those of the nearest ZIP code area.

Area codes for Hayward

Area code 510
In service since September 2, 1991. Shares its area with 341. Local calls are dialed with 1 plus ten digits.
Area code 341
In service since July 22, 2019. Shares its area with 510. Local calls are dialed with 1 plus ten digits.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Time zone

Hayward is in the Pacific Time zone.

Towns near Hayward

Fairview2.1 km (1.3 mi)
Castro Valley5.6 km (3.5 mi)
Cherryland6.6 km (4.1 mi)
Union6.7 km (4.2 mi)
Union City8.2 km (5.1 mi)
Ashland8.2 km (5.1 mi)
San Lorenzo8.8 km (5.5 mi)
Norris Canyon10.1 km (6.3 mi)

Local numbers in area code 510

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