Bank Routing Number

Leader Bank, N.A. Routing Number

The primary ABA routing number (RTN) for Leader Bank, N.A., Arlington, MA is shown below.

Primary ABA / RTN

011307129

Verify before you send money. This is the bank's primary registered routing number, taken from the FFIEC National Information Center institution record (last refreshed here on October 8, 2026). Banks often use a different routing number for wire transfers than for ACH, and large banks vary it by region; always confirm the correct number on a check or with your bank before initiating a transfer.

What is an ABA routing number?

An ABA routing number, also called a routing transit number (RTN), is a 9-digit code that identifies a U.S. financial institution in the payment system. It tells ACH transfers, Fedwire payments, and paper checks which bank to route money to. The format was created by the American Bankers Association in 1910 and is still the backbone of U.S. domestic payments.

What is the difference between a routing number and an account number?

Your routing number identifies the bank; your account number identifies your specific account at that bank. On a paper check, the routing number is the 9-digit number in the bottom-left, and the account number is to its right.

What is the Leader Bank, N.A. routing number?

The Leader Bank, N.A. routing number is 011307129. It is the primary ABA routing transit number registered to Leader Bank, N.A., headquartered in Arlington, MA. A bank can hold more than one routing number, so this is the one on record for the institution, not necessarily the one printed on every check. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 8, 2026.

What is the Leader Bank, N.A. wire routing number?

This page lists 011307129, the primary routing number registered to Leader Bank, N.A. The record does not say whether the bank uses the same number for wire transfers, and many banks use a separate routing number for domestic wires. Confirm the wire routing number with Leader Bank, N.A. before sending a wire.

Is ABA number 011307129 the routing number for Leader Bank, N.A.?

Yes. ABA number 011307129 is the primary routing number registered to Leader Bank, N.A. Check it against the routing number on a check or in your online banking before sending an ACH payment, because a bank can use different numbers by region or product.

Which bank uses routing number 011307129?

Routing number 011307129 belongs to Leader Bank, N.A., headquartered in Arlington, MA. It is the bank's primary ABA routing number (FDIC certificate 57134).

Routing numbers of similar-size institutions in Massachusetts

Credit union, Arlington, MA: Arlington Municipal Federal Credit Union: 211380315
Bank, Newburyport, MA: Institution for Savings in Newburyport and Its Vicinity: 211370943
Bank, Hyannis, MA: Cape Cod Five Cents Savings Bank: 211371078
Bank, Holyoke, MA: PeoplesBank: 211871772
Bank, Hingham, MA: Hingham Institution for Savings: 211370370
Bank, Natick, MA: Middlesex Savings Bank: 211371227
Bank, Cambridge, MA: Cambridge Savings Bank: 211371120
Credit union, Rockland, MA: Arise Federal Credit Union: 211373348

All routing numbers in Massachusetts

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Regulator records: FDIC BankFind (cert 57134) · FFIEC NIC profile (RSSD 3109146)