{
  "number": "325182289",
  "bankSlug": "1st-security-bank-of-washington",
  "bankName": "1st Security Bank of Washington",
  "bankShortName": "1st Security Bank of Washington",
  "bankType": "bank",
  "bankWebsite": "https://WWW.FSBWA.com",
  "hqCity": "Mountlake Terrace",
  "hqState": "WA",
  "kind": "ach",
  "transferTypes": [
    "ACH",
    "domestic wire"
  ],
  "label": "1st Security Bank of Washington cross-checked routing number",
  "state": "WA",
  "verificationStatus": "cross-checked",
  "statusNote": "Cross-checked across 5 public candidate source families; not verified against an official bank source.",
  "sourceName": "5 public routing candidate source families",
  "sourceUrl": "https://github.com/moov-io/fed",
  "crossCheckSourceCount": 5,
  "lastReviewed": "2026-06-28"
}