About Westamerica

Contact Us

Phone Numbers

Customer Service Representatives
(800) 848-1088
5 a.m. – midnight, 7 days a week

24-Hour Automated Telephone Banking
(800) 848-1088 

Banking Services
(800) 829-8629
  • Business Online Services
  • Merchant Card Services
  • Loan Adjustments

Loan Express
Personal Loan Applications by Phone
(800) 514-1460

Home Equity Lines of Credit
(800) 442-6202

Mortgage Loan Servicing
Mortgage Help
(800) 877-8887

Investor Relations
(707) 863-6992

Trust Services
(800) 359-7562

Addresses

General Bank Correspondence
PO Box 1200
Suisun City, CA 94585-1200

Shipping and Overnight Deliveries
4550 Mangels Boulevard
Fairfield, CA 94534

Loan Payments
PO Box 1260
Suisun City, CA 94585-1260

Loan Servicing
Loan documents, general correspondence
PO Box 1190
Suisun City, CA 94585-1190

Mortgage Loan Servicing
Mortgage documents, general correspondence
PO Box 1180
Suisun City, CA 94585-1180

Investor Relations
PO Box 1250 – A2B
Suisun City, CA 94585-1200

Trust Services
PO Box 1240
Suisun City, CA 94585-1240

Corporate headquarters

Westamerica Bancorporation and Subsidiary Bank Headquarters

1108 Fifth Avenue

San Rafael, CA 94901

(415) 257-8000

Holiday Closures

Branches and corporate offices are closed on the following holidays:

  • New Year's Day
  • Martin Luther King, Jr. Day
  • Presidents Day
  • Memorial Day
  • Independence Day
  • Labor Day
  • Columbus Day
  • Veterans Day
  • Thanksgiving Day
  • Christmas Day