Columbia Bank's routing number is 323270436 (Tacoma, WA). This 9-digit ABA routing number is used for ACH transfers, direct deposits, and wire transfers.
How do I validate a Columbia Bank routing number?
Enter the Columbia Bank routing number in the validator above. It will verify the 9-digit format, check the ABA 3-7-1 weighted checksum, identify the Federal Reserve district, and confirm the bank name.
Where can I find my Columbia Bank routing number?
Your Columbia Bank routing number appears at the bottom-left of your checks (first 9 digits), in your online banking portal, or on your bank statements. Note that Columbia Bank may use different routing numbers depending on your state or transaction type.
In which states does Columbia Bank operate?
Based on routing number data, Columbia Bank operates in WA. Each regional office may have its own routing number for processing local transactions.