Dublin is a suburban city of the East Bay in California, United States. It is located within the Amador Valley of Alameda County's Tri-Valley region. It is located along the north side of Interstate 580 at the intersection with Interstate 680, roughly 35 miles east of downtown San Francisco, 23 miles east of downtown Oakland, and 31 miles north of downtown San Jose. It was referred to as "Dublin" in reference to the city of Dublin, Ireland, because of the large number of Irish who lived there.