Vallejo, California is a place.
Vallejo ( [ vəˈleɪ.oʊ , _ - hoʊ ] ; Spanish : [ baˈʎexo ] ) is a waterfront port city in Solano County , California , located in the North Bay region of the San Francisco Bay Area . Vallejo sits on the northeastern shore of San Pablo Bay , 30 miles north of San Francisco . Ferry service runs from a terminal on Mare Island Strait to San Francisco , through the BayLink division of SolTrans . 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 best known for the Zodiac Killer and being the hometown of Bay Area rappers E-40 and Mac Dre .