1st Security Bank of Washington

Institution details

Source identifier

FDIC 57633

Type

bank

Address

6920 220th St Sw Ste 300, Mountlake Terrace, WA 98043

Source status

Active in this snapshot

Snapshot

2026-09-04

Review the official FDIC source

Routing numbers and payment rails

Institution identity is not a routing-number assignment. This FDIC record does not establish ACH, Fedwire, FedNow or RTP eligibility. Obtain the routing number from your bank, then check the source observations in our routing checker. We do not guess routing numbers from bank names.

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Recorded locations: 34

Showing up to 20 locations linked by the official source identifier, not by name similarity. Confirm current opening status with the institution.