Other cities in the 510 area code include: San Leandro, Alameda, Union City, Hercules, El Cerrito, Pinole, and Emeryville.
Oakland / ˈ oʊ k l ə n d / is the largest city and the county seat of Alameda County, California, United States. A major West Coast port city, Oakland is the largest city in the East Bay region of the San Francisco Bay Area, the third largest city overall in the San Francisco Bay Area, the eighth largest city in California, and the 45th largest city in the United States, with a population of 419,267 as of 2015 . It serves as a trade center for the San Francisco Bay Area ; its Port of Oakland is the busiest port in the San Francisco Bay, the entirety of Northern California, and the fifth busiest in the United States.
Fremont is a city in Alameda County, California, United States. It was incorporated on January 23, 1956, from the merger of five smaller communities: Centerville, Niles, Irvington, Mission San Jose, and Warm Springs. The city is named after American explorer John Charles Frémont.Located in the southeast section of the San Francisco Bay Area in the East Bay region primarily, Fremont has a population of around 230,000. It is the fourth most populous city in the San Francisco Bay Area, and the largest suburb in the metropolis.
Hayward is a city located in Alameda County, California in the East Bay subregion of the San Francisco Bay Area. With a 2014 population of 149,392, Hayward is the sixth largest city in the Bay Area and the third largest in Alameda County. Hayward was ranked as the 37th most populous municipality in California. It is included in the San Francisco-Oakland-Fremont Metropolitan Statistical Area by the US Census. It is located primarily between Castro Valley and Union City, and lies at the eastern terminus of the San Mateo-Hayward Bridge. The city was devastated early in its history by the 1868 Hayward earthquake.
The 510 area code lies within the Pacific Daylight Time Zone (or PDT). The current time in PDT is 2:18 AM on Jul 07, 2020.