Westamerica Bank in Rohnert Park, CA

Westamerica Bank considers itself it be "your community banker," and in a smaller town like Rohnert Park, a lot of people feel that it is important to be part of the community. Based in Northern and central California, Westamerica has a lucky 13 branches in Sonoma County. The Rohnert Park branch has been at its current location since the 1980s.

As with most mid-sized banks, Westamerica offers an array of services for personal and business banking, including checking and savings accounts, loans and financial planning.