510 – California Area Codes

Number structure

+1510204
208
226
238
23
245
...
United StatesCaliforniaCode of CityNumber

List of area codes

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CityArea Code
Alameda510-337, 510-521, 510-522, 510-523, 510-748, 510-749, 510-769, 510-814, 510-864, 510-865
Berkeley510-204, 510-486, 510-540, 510-548, 510-549, 510-642, 510-644, 510-647, 510-649, 510-665, 510-666, 510-704, 510-841, 510-843, 510-845, 510-848, 510-849, 510-883, 510-981
Castro Valley510-537
Crockett510-787
Emeryville510-596
Fremont510-226, 510-248, 510-252, 510-353, 510-438, 510-440, 510-445, 510-490, 510-494, 510-498, 510-505, 510-573, 510-574, 510-623, 510-651, 510-656, 510-657, 510-659, 510-668, 510-683, 510-713, 510-739, 510-742, 510-744, 510-745, 510-770, 510-79, 510-818, 510-979
Hayward510-259, 510-264, 510-265, 510-266, 510-293, 510-397, 510-583, 510-670, 510-690, 510-728, 510-732, 510-733, 510-78, 510-885, 510-886, 510-887, 510-888
Hercules510-245
Oakland510-208, 510-238, 510-251, 510-261, 510-268, 510-271, 510-272, 510-273, 510-336, 510-339, 510-383, 510-428, 510-430, 510-433, 510-434, 510-436, 510-437, 510-444, 510-451, 510-452, 510-465, 510-482, 510-53, 510-547, 510-553, 510-562, 510-567, 510-568, 510-569, 510-625, 510-63, 510-652, 510-653, 510-654, 510-655, 510-663, 510-752, 510-763, 510-777, 510-832, 510-834, 510-835, 510-836, 510-839, 510-842, 510-869, 510-879, 510-891, 510-893, 510-922, 510-923, 510-986
Pinole510-724
Richmond510-23, 510-307, 510-412, 510-620
San Leandro510-317, 510-346, 510-351, 510-352, 510-357, 510-481, 510-483, 510-614, 510-667, 510-895
Union City510-324, 510-429, 510-441, 510-471, 510-475, 510-477, 510-487, 510-489, 510-675
All area codes in California

Local time in California

TimezoneGMTTime
America/Los_Angeles-08:00
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Map of California

Other area codes in United States

Area Codes Search Notes

Fixed phone numbers in the United States, state California (area code 510) 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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