What are your hours of operation?
What is 1st Security Bank’s main mailing address?
Does it matter which branch is my branch of account?
How do I change my account address?
How do I change/update the name on my account?
How does 24-Hour Telephone Banking work?
All of our branches and offices are open Monday through Friday.
Monday - Thursday: 9:00am – 5:00pm
Friday: 9:00am – 6:00pm
Administrative Center Hours:
Monday - Friday: 9:00am – 5:00pm
1st Security Bank
PO Box 97000
Lynnwood, WA 98046-9700
You can visit any branch location to deposit and withdraw money, make loan/mortgage payments, change account information, etc. Your branch of account, however, takes pride in getting to know you on a personal level and takes the time needed to determine how to help you make the most of your financial resources.
Visit one of our branch locations
Within 1st Security Bank’s Online Banking – My Profile > User Options
Fill out, print, sign, and mail 1st Security Bank’s Contact Information Change Request Form to 1st Security Bank, PO Box 97000, Lynnwood, WA 98046
Visit or call any of our branch locations to find out how and what documentation will be required.
A free, 24-hour automated phone service, Telephone Banking is a response system that allows you to make routine transactions from a touch-tone phone. To check balances, transfer funds, and review recent transactions, simply call 800.433.0888. To set-up 24-Hour Telephone Banking, or to learn more, please contact or visit your local 1st Security Bank branch to obtain a PIN.