Bank routing number ยท Centralia, Washington
Security State Bank Routing Number (ABA): 125100607
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The last primary routing number on Security State Bank's record is 125100607.
Security State Bank routing numbers on file
| Routing number | Type | Status | Source |
|---|---|---|---|
| 125100607 | Primary ABA | Bank merged, September 30, 2025 | FFIEC NIC |
Record refreshed here on October 25, 2026. NIC holds one primary number per bank; Security State Bank publishes any other numbers it uses itself.
What the digits mean
The first two digits, 12, place this number in the Federal Reserve Bank of San Francisco's district (District 12). Digits five through eight, 0060, identify the institution within that district. The last digit, 7, is a check digit, and the number passes the standard check: weight the nine digits 3, 7, 1, 3, 7, 1, 3, 7, 1 and the sum is a multiple of 10.
About Security State Bank
Security State Bank is headquartered in Centralia, Washington and was established in 1903. It is in the CENTRALIA, WA metro area. It reported $613.0M in total assets and $503.3M in deposits for Q1 2025. See the largest banks in Washington by total assets. It reports 12 domestic offices. Its deposits have been FDIC insured since 1934. Its primary federal regulator is the FDIC.
What the digits in 125100607 mean
The first four digits, 1251, are the Federal Reserve routing symbol. The prefix 12 places the number in the 12th Federal Reserve District (San Francisco). That is also the district where the bank is headquartered. Digits five through eight, 0060, identify the institution within its Federal Reserve district. The last digit, 7, is a check digit. Weighting the digits 3, 7 and 1 in turn gives 3 x 8 + 7 x 2 + 12 = 50, a multiple of 10, so 125100607 is a well-formed routing number. A mistyped digit almost always breaks that sum.
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Regulator records: FDIC BankFind (cert 13232) · FFIEC NIC profile (RSSD 111979)