A routing number is a 9-digit identifier assigned to every bank and credit union in the United States by the American Bankers Association. It identifies which financial institution holds the account being debited or credited in a transaction. Routing numbers are required for direct deposit, ACH transfers, electronic bill payment, and wire transfers. Without one, banks can't route a payment to the correct destination.
What the 9 Digits Encode
The routing number isn't random. The first eight digits encode specific information; the ninth is a checksum.
Digits 1-2: Federal Reserve District (01 = Boston, 02 = New York, ..., 12 = San Francisco). The first two digits also indicate "thrift" institutions when they start with 21 to 32.
Digits 3-4: Federal Reserve branch within the district.
Digits 5-8: Identifies the specific bank.
Digit 9: Check digit calculated from the prior 8 using a weighted formula. The check digit catches typos at validation time — if a routing number's checksum doesn't match, the payment file is rejected immediately.
This structure means routing numbers carry useful metadata for payment processors. For consumers, the structure is invisible — just confirm you have the right 9-digit number for your bank.
Where to Find Your Routing Number
Three reliable sources, in order of preference:
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Your bank's mobile app or online banking. Look under "account information," "direct deposit setup," or similar. Most apps now display routing and account numbers prominently for setup convenience.
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The bottom-left of a check. The 9-digit number framed by transit symbols ⑆…⑆ is the routing number.
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Your bank's official website, typically under FAQ or contact pages. For neobanks like Current, Chime, and Cash App, the routing number is the partner bank's routing number — disclosed in the app and in the account agreement.
Do not get the routing number from emails, text messages, or websites you don't trust. Phishing scams sometimes target consumers by claiming to be the bank and asking for confirmation of routing and account numbers; legitimate banks never request this in unsolicited communications.
Multiple Routing Numbers at Large Banks
Large banks frequently have more than one routing number, depending on what's being routed:
- ACH (the standard for direct deposit and bill pay): one routing number
- Wire transfers: often a different routing number
- State-specific branches: large banks like Bank of America use different routing numbers for accounts opened in California, Texas, New York, etc.
When filling out a direct-deposit form, use the ACH routing number, which is the one printed on a check. The wire-transfer routing number is published on the bank's website but isn't usually printed on consumer checks.
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Routing Numbers for Neobanks and Fintech
Neobanks (Chime, Current, Cash App, Varo, etc.) often partner with FDIC-insured banks for deposits. The routing number on the neobank's checking account is the partner bank's, not the neobank's. For example, Chime's deposits at Bancorp Bank use a Bancorp routing number; Current's deposits at Choice Financial Group use a Choice Financial routing number.
This can confuse direct-deposit setups when payroll forms ask for the "bank name." The correct answer is the partner bank's name (Choice Financial Group), not the neobank's brand (Current). Neobanks typically display both clearly in their app to avoid confusion.
Verifying a Routing Number
The FedACH directory and the American Bankers Association both maintain searchable databases of routing numbers. If you receive a routing number from a non-trusted source (e.g., a vendor invoice), confirm it against one of these databases before initiating a transfer.
For large transfers (real-estate closings, business invoices), confirming the routing number through a phone call to the recipient on a known-good number — not a number provided in the same email — is standard fraud-prevention practice.
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Related Reading
- Credit Building Bank Accounts
- Second Chance Bank Accounts
- How To Send Money Without A Bank Account
- Open Checking Account With Bad Credit
- Wire Transfer Vs Money Transfer
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Frequently Asked Questions
Are routing numbers public?
Yes. Routing numbers are not sensitive information by themselves — they're public identifiers for banks. The combination of routing number + account number + your authorization is what enables transfers.
Can someone steal my money with just my routing number?
Not from the routing number alone. Account number plus authorization (signature on a check, ACH agreement, online banking access) is also required for any debit. Still, treat your account number more carefully than your routing number.
Why does my bank have multiple routing numbers?
Large banks may have separate routing numbers for ACH versus wire transfers, and for different states or branches. Use the one specifically for the transaction type you're initiating.
Are credit union routing numbers different from bank routing numbers?
They use the same 9-digit format and the same registry. The first two digits often indicate that the institution is a credit union (typically 21-32 range), but functionally they're identical.
