Vallejo is a city in Solano County, California, located in the North Bay region of the San Francisco Bay Area. The population was 115,942 at the 2010 census. It is the tenth most populous city in the San Francisco Bay Area, and the largest in Solano County. Vallejo sits on the northeastern shore of San Pablo Bay, 30 miles north of San Francisco. The city is named after General Mariano Guadalupe Vallejo, a native Californio, leading proponent of California's statehood, and one of the first members of the California State Senate; the neighboring city of Benicia is named for his wife, Francisca Benicia Carillo de Vallejo.
Vallejo has twice served as the capital of the state of California: once in 1852 and again in 1853, both periods being brief.
Vallejo is undergoing a revitalization of older neighborhoods and is experiencing a spike in home sales due to unique character of homes, affordability, and proximity to the Bay Area.