United States, Union City Area Codes

Number structure

+1510324
429
441
471
475
477
...
United StatesCaliforniaUnion CityNumber

List of area codes

510-324
510-429
510-441
510-471
510-475
510-477
510-487
510-489
510-675

Local time in Union City

TimezoneGMTTime
America/Los_Angeles-08:00
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Map of Union City

Other area codes in California

Area Codes Search Notes

Fixed phone numbers in the United States, state California, Union City are comprised of a single country code (+1), a 3 digit area code, a 3 digit local office code (or region code), and a 4 digit line code. Making a call with the wrong country, area, or region code can be costly. Browse our sites area and region codes by state and city to ensure you have the correct information for your calls. Each states page contains a list of the cities within that state and the numbers of that area. Also available are local times. So you don’t have to worry about calling too late or early again.

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