Winter Hill Bank, FSB Routing Number

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 Winter Hill Bank, FSB routing number?

The Winter Hill Bank, FSB routing number is 211370406. It is the primary ABA routing transit number registered to Winter Hill Bank, FSB, headquartered in Somerville, 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 Winter Hill Bank, FSB wire routing number?

This page lists 211370406, the primary routing number registered to Winter Hill Bank, FSB. 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 Winter Hill Bank, FSB before sending a wire.

Is ABA number 211370406 the routing number for Winter Hill Bank, FSB?

Yes. ABA number 211370406 is the primary routing number registered to Winter Hill Bank, FSB. 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 211370406?

Routing number 211370406 belongs to Winter Hill Bank, FSB, headquartered in Somerville, MA. It is the bank's primary ABA routing number (FDIC certificate 28213).

Routing numbers in Somerville, MA

Bank

Middlesex Federal Savings, F.A.: 211370150

Credit union

Naveo Credit Union: 211381673

Credit union

Somerville Municipal Federal Credit Union: 211385653

Credit union

Somerville School Employees Federal Credit Union: 211386238

Credit union

Somerville Ma Firefighters Federal Credit Union: 211385637

Credit union

Health Alliance Federal Credit Union: 211385640

All routing numbers in Massachusetts