Alvarado (formerly, New Haven) is a former settlement in and former county seat of Alameda County, California, now part of Union City. It was located north-northwest of downtown

Newark Newark most commonly refers to: * Newark, New Jersey, city in the United States * Newark Liberty International Airport, New Jersey; a major air hub in the New York metropolitan area Newark may also refer to: Places Canada * Niagara-on-the ...

. In 1851, Henry C. Smith founded the town of New Haven, named after his father's home town of New Haven, Connecticut. In 1853, the town amalgamated with a nearby town called Alvarado, and became the county seat of the newly formed Alameda County. Alvarado was named for Juan Alvarado, Mexican Governor of California from 1836 to 1842. The first post office opened in 1853. On January 13, 1959, Alvarado and

Decoto Decoto is a neighborhood of Union City, California originally established as a separate community. It is located north-northwest of downtown Newark, along California State Route 238. History In 1867, Ezra Decoto, a local landowner sold land to t ...

voted to incorporate as Union City, California. Though New Haven and Alvarado are both now part of Union City, the name of New Haven lives on in the New Haven Unified School District.

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