Mountlake Terrace, WA
Bank 1st Security Bank of Washington
1st Security Bank of Washington is a federally insured bank based in Mountlake Terrace, Washington.
- Type
- Bank
- Charter
- State-chartered savings institution
- Primary regulator
- FDIC
- Established
- April 1, 2004
- Headquarters
- Mountlake Terrace, WA
- FDIC certificate #
- 57633
- Fed RSSD ID
- 1018927
- Holding company
- Fs Bcorp Inc
- Website
- WWW.FSBWA.com
$3.2B
Total assets Data as of Q1 2026
$2.66B
Total deposits Data as of Q1 2026
31
Branch locations Data as of Q1 2026
$8.6M
Net income Data as of Q1 2026
1.08%
Return on assets Data as of Q1 2026
Source: U.S. FDIC BankFind & NCUA 5300 Call Report (public data). Data sources · Data as of Q1 2026
Branches by state
1st Security Bank of Washington operates 31 branch locations across 2 states. Select a state to drill down to its towns and individual branches.
Ownership
1st Security Bank of Washington is owned by Fs Bcorp Inc. See the full ownership & merger history.
1st Security Bank of Washington financial summary
Other banks in Washington
Federally insured banks headquartered in Washington, by total assets.
- WaFd Bank $27.55B
- Banner Bank $16.34B
- Washington Trust Bank $10.7B
- Heritage Bank $8.49B
- Coastal Community Bank $5.66B
- Peoples Bank $2.51B
- Cashmere Valley Bank $2.3B
- First Fed Bank $2.12B
Similar-size banks
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