High Quality Content by WIKIPEDIA articles! Fairfield is a city located in the northeastern portion of the San Francisco Bay Area in Northern California, USA (See East Bay and North Bay). It is approximately 34 miles (55 km) from both the city of San Francisco and the city of Sacramento, approximately 30 miles (48 km) from Oakland, less than 18 miles (29 km) from Napa Valley , 15 miles from the Carquinez Bridge, and 13 miles from the Benicia Bridge. Fairfield was founded in 1859 by clippership captain Robert H. Waterman, and named after his former hometown of Fairfield, Connecticut.