Shared branching is a cooperative network that lets members of one credit union walk into a branch of a different credit union and conduct routine in-person transactions — deposits, withdrawals, loan payments, account transfers, official checks — as if it were their own institution. The largest network, CO-OP Shared Branch, links more than 5,600 participating credit unions and roughly 5,000 physical branches across the United States. For credit union members who travel, move, or live somewhere their primary credit union does not have a branch, shared branching makes a small or regional credit union feel as physically accessible as a national bank.
Most credit unions are small. The median US credit union holds well under $100 million in assets and operates only a handful of branches, typically clustered around an employer, a neighborhood, or a region. That tight focus is part of what makes credit unions distinct from large commercial banks — but it also means a credit union member who travels for work, attends college out of state, or moves to a new city can easily find themselves hundreds of miles from their nearest branch. Shared branching solves that problem without forcing every credit union to build a national branch network of its own. By pooling counter space through a cooperative network, even a single-branch credit union can offer in-person service nationwide.
The exact list of services varies slightly by host credit union, but standard shared-branching transactions include:
Things you usually cannot do at a shared branch: open a new account at your home credit union, apply for a loan, change your address, dispute a transaction, or get a replacement debit card. Those services require contact with your home credit union directly, either online, by phone, or at one of its own branches.
You walk into a participating credit union and tell the teller you are a shared-branching member. The teller asks for a government-issued photo ID, your home credit union's name, and your account number. They look up your account on the shared-branching terminal — a separate system from the host credit union's own member system — and confirm your identity using account-verification questions or a one-time code sent to your phone or email by your home credit union. From there, the transaction posts to your home credit union's ledger in real time, just as if you had visited your own branch.
Cash deposits typically post immediately and are available for withdrawal the same day, though the host credit union may place a hold on large cash deposits in line with Regulation CC. Check deposits follow your home credit union's standard funds-availability policy — usually next-business-day for the first $225 and the rest within two business days.
For members, shared-branching transactions are almost always free. The host credit union and your home credit union settle a small interchange fee between themselves through CO-OP, but it is not passed through to you. There are two common exceptions: some host credit unions charge a flat $1–$5 fee for shared-branching cash withdrawals, and some home credit unions cap the number of free shared-branching transactions per month before charging their own fee. Check your home credit union's fee schedule for specifics — but compared to ATM fees, wire fees, or out-of-network bank charges, shared branching is one of the cheapest ways to do banking in person.
The official locator is at co-opcreditunions.org/locator, where you can search by ZIP code, address, or city and filter by participating credit unions. Most credit union mobile apps also include a built-in shared-branch and ATM locator that uses your phone's location. If you are traveling, search ahead of time — small towns often have only one or two participating branches, and they may keep limited hours.
Shared branching is sometimes confused with the CO-OP ATM Network, which is a related but separate program. CO-OP ATM gives credit union members surcharge-free access to roughly 30,000 ATMs at participating credit unions, 7-Eleven stores, and other retailers. Shared branches are staffed locations where you can talk to a teller; shared ATMs are unstaffed cash machines. Most credit unions belong to both programs, but the participating institutions are not identical — always check the right locator for what you need.
Most US credit unions are. The largest exceptions tend to be very small employer-only credit unions, a few of the largest national credit unions that operate their own branch networks (Navy Federal, for example, does not participate in CO-OP Shared Branch because its own branch and ATM network is large enough to serve members nationwide), and a handful of state-chartered credit unions that participate in regional networks instead. The fastest way to confirm is to check your home credit union's website or call their member service line — most institutions advertise shared-branching membership prominently because it is a real selling point.
Shared branching does not change anything about your routing number. The nine-digit ABA routing number that identifies your home credit union — which you can look up using the credit union directory on this site — is still the number you give your employer, the IRS, or anyone else sending you an electronic payment. The host credit union you visit for a shared-branching transaction has its own routing number, but that number is irrelevant to you as a guest member; the host's role is operational, not financial.
Shared branching is, in many ways, the credit union movement's answer to the convenience advantage of national banks — built cooperatively, not by capital expenditure. For routing numbers, branch addresses, and contact information for any participating credit union, use the state directory or search at the top of this page.