Oakland is the most populous city in and the county seat of Alameda County, California, United States. A major West Coast port, Oakland is the largest city in the East Bay region of the San Francisco Bay Area, and the third-largest city overall in the Bay Area. With a population of 440,646 in 2020, it serves as the Bay Area's trade center: the Port of Oakland is the busiest port in Northern California, and the fifth- or sixth-busiest in the United States. A charter city, Oakland was incorporated on May 4, 1852, in the wake of the state's increasing population due to the California gold rush. Oakland's territory covers what was once a mosaic of California coastal terrace prairie, oak woodland, and north coastal scrub. In the late 18th century, it became part of a large rancho grant in the colony of New Spain, and known for its plentiful oak tree stands. Its land served as a resource when its hillside oak and redwood timber were logged to build San Francisco.

Country: United States
State: California
County: Alameda
Incorporated: May 4, 1852
Named for: The large oak forest that originally covered the area
• Type: Strong mayor
• Body: Oakland City Council
• Mayor: Sheng Thao (D)
• Vice Mayor: Rebecca Kaplan (D)
• Assemblymembers: and,
Population (2020): 440,646
• Rank: 1st in Alameda County, 8th in California, 45th in the United States
Demonym(s): Oaklander
Time zone: PST (UTC−08:00)
• Summer (DST): PDT (UTC−07:00)
ZIP Codes: 94601–94615, 94617-94624, 94649, 94659–94662, 94666
Area codes: 510/341
FIPS code: 06-53000
GNIS feature IDs: 277566, 2411292
Website: ,
Twitter profile: Oakland
Wikidata description: city and county seat of Alameda County, California, United States
Wikidata id: Q17042
Wikidata label: Oakland
Wikidata aliases: Array
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