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 is best known for the Zodiac Killer and being the hometown of Bay Area rappers E-40 and Mac Dre .