1st Security Bank of Washington
Mountlake Terrace, WA · Owner: FS Bcorp Inc
$3.2B
total assets, June 30, 2026
$3.2B
total assets, June 30, 2026
1st Security Bank of Washington is a state savings bank based in Mountlake Terrace, WA, owned by FS Bcorp Inc. As of June 30, 2026 it held $3.2 billion in assets and $2.5 billion in deposits; assets were up 0.1% from a year before. It has 30 branches in 2 states.
Updated Oct 11, 2026 · numbers as of June 30, 2026
Total assets
$3.2B
+0.1% in a year · -0.8% in a quarter
Deposits
$2.5B
-4.0% in a year · -7.2% in a quarter
Loans
$2.7B
+0.8% in a year · -0.8% in a quarter
Profit so far
$17.4M
Jan 1 to Jun 30, 2026 · +4.4% in a year
Capital ratio
11.44%
+0.26 pts in a year
Return on assets
1.09%
+0.01 pts in a year
Facts
- Type
- State savings bank
- Head office
- 6920 220th St Sw, Mountlake Terrace, WA, 98043
- County
- Snohomish
- Holding company
- FS Bcorp Inc
- Established
- Apr 1, 2004
- Employees
- 592
- Branches
- 30 in 2 states
- Website
- www.fsbwa.com
- Id
- b57633
Quarter by quarter
June 30, 2004 to June 30, 2026
Assets, deposits and loans
Each quarter end, US dollars
Profit by quarter
Net income of each quarter, the last 12
Ratios
Percent. Return on assets and net interest margin are yearly rates.
Branches
30 offices as of June 30, 2026, holding $2.5 billion in deposits
Branch map
Every branch, sized by its deposits
| State | Branches | Deposits | Share |
|---|---|---|---|
| Washington | 25 | $2.2B | 87.8% |
| Oregon | 5 | $302M | 12.2% |
| Largest branches | Place | Deposits |
|---|---|---|
| 1St Security Bank Of Washington (main office) | Mountlake Terrace, WA | $503M |
| Port Townsend Branch | Port Townsend, WA | $133M |
| Sequim Branch | Sequim, WA | $131M |
| Edmonds | Edmonds, WA | $129M |
| Eighth Street Branch | Port Angeles, WA | $125M |
| Lynnwood | Lynnwood, WA | $116M |
| Aberdeen Branch | Aberdeen, WA | $110M |
| Hadlock Branch | Hadlock, WA | $99.3M |
| Puyallup-Downtown | Puyallup, WA | $90.6M |
| Crossroads Branch | Bellevue, WA | $89.7M |
Related pages
Questions and answers
How big is 1st Security Bank of Washington?
$3.2 billion in total assets and $2.5 billion in deposits as of June 30, 2026, with assets up 0.1% from a year before. Its loans were $2.7 billion.
How many branches does 1st Security Bank of Washington have?
30 branches in 2 states as of June 30, 2026. The most deposits are in Washington ($2.2 billion).
Is 1st Security Bank of Washington profitable?
Yes: it earned $17.4 million from January 1 to June 30, 2026 (up 4.4% from the same months a year before). Its return on assets was 1.09% a year; about 1% is typical.
Who owns 1st Security Bank of Washington?
1st Security Bank of Washington is owned by FS Bcorp Inc, its holding company.
Official public data from the reports every insured bank files each quarter. Profit so far runs from January 1 to the quarter end. Branch deposits are counted once a year, as of June 30. New quarters appear about two months after the quarter ends.