Routing numbers, ABA numbers, branch addresses, and contact details for federally insured credit unions across all 50 states — sourced from the Federal Reserve's FedACH Participant Directory.
Know the 9-digit routing number? Jump straight to it via the routing number directory.
Jump to credit unions headquartered in a specific state. We track every ABA number registered with the Federal Reserve.
Some of the largest member-owned credit unions in the United States, ranked by branch count.
A routing number — sometimes called an ABA number, ABA RTN, or routing transit number — is a nine-digit code assigned by the American Bankers Association and the Federal Reserve to identify a specific financial institution in the United States. Every federally insured credit union has at least one routing number, which appears on the bottom-left of any check, in your online banking dashboard, and on direct deposit forms.
The fastest way is to search this site for your credit union by name or state. You can also look at the bottom-left of a paper check, log into your member portal, or call your branch directly. Many large credit unions use a single routing number for the whole institution, while others use different numbers for each region — see the routing-number guide for details.
Sometimes. Most credit unions use the same nine-digit ABA number for ACH transfers (direct deposit, electronic bill pay) and domestic wire transfers, but a few use a separate wire routing number. International wires use a SWIFT/BIC code, which is different from a routing number entirely. See wire vs ACH for a complete breakdown.
Often yes — through the shared branching network. More than 5,600 US credit unions participate in CO-OP Shared Branch, which lets members of one credit union conduct in-person transactions at branches of any other participating credit union, fee-free. See our shared branching guide for details on how it works and how to find a participating branch.