There are 105,321 residents in Fairfield, which is 41.2 square miles and 13ft above sea level. It was settled in December 12, 1903 and is governed by a Council-manager local government.
There are 115,942 residents in Vallejo, which is 49.5 square miles and 69ft above sea level. It was settled in 1851 and is governed by a Council-Manager local government.