Middlesex Federal Savings, F.A. Routing Number (ABA): 211370150

Middlesex Federal Savings, F.A. at a glance

It reports no CET1 ratio; its Tier 1 leverage ratio was 9.97% at Q2 2026, above the 9% community bank leverage ratio requirement for being considered well capitalized.

Total assets, Q2 2026

$654.4M

Tier 1 leverage ratio, Q2 2026

9.97%

Deposit insurance

FDIC

Regulator

OCC

Domestic offices

4 FDIC institution directory, current count

Latest call report

Q2 2026, FFIEC 041

Established

1890

Full financial profile · Is Middlesex Federal Savings, F.A. safe? · Middlesex Federal Savings, F.A. call report · Branch locations

What the digits mean

The first two digits, 21, place this number in the Federal Reserve Bank of Boston's district (District 1): prefixes 21 to 32 are the district numbers assigned to thrift institutions. Digits five through eight, 7015, identify the institution within that district. The last digit, 0, is a check digit, and the number passes the standard check: weight the nine digits 3, 7, 1, 3, 7, 1, 3, 7, 1 and the sum is a multiple of 10.

Before you send money to Middlesex Federal Savings, F.A.

A routing number tells the payment network which financial institution holds an account. You give it with an account number for ACH transfers through the automated clearing house, such as direct deposit, bill pay and transfers from a checking account, which usually settle in one to two business days. An international wire to a US account normally needs the bank's SWIFT code as well.

Match this number against the one on your Middlesex Federal Savings, F.A. checks or in its online banking. Ask the bank for wire instructions (www.middlesexfederal.com). Our record does not show whether this number receives wires. The Federal Reserve's E-Payments Routing Directory shows it: its Fedwire participant search lists the numbers that can receive Fedwire transfers, and its FedACH search lists those that receive ACH payments. How to confirm any routing number.

About Middlesex Federal Savings, F.A.

Middlesex Federal Savings, F.A. is headquartered in Somerville, Massachusetts and was established in 1890. It is in the BOSTON-CAMBRIDGE-NEWTON, MA-NH metro area. It reported $654.4M in total assets and $576.5M in deposits for Q2 2026, the 61st largest of the 89 banks headquartered in Massachusetts. It reports 4 domestic offices. Its deposits have been FDIC insured since 1989. Its primary federal regulator is the OCC. 6 other banks and credit unions headquartered in Somerville have a routing number listed here.

What the digits in 211370150 mean

The first four digits, 2113, are the Federal Reserve routing symbol. The prefix 21 places the number in the 1st Federal Reserve District (Boston), a range the ABA plan set aside for thrift institutions. That is also the district where the bank is headquartered. Digits five through eight, 7015, identify the institution within its Federal Reserve district. The last digit, 0, is a check digit. Weighting the digits 3, 7 and 1 in turn gives 3 x 6 + 7 x 13 + 1 = 110, a multiple of 10, so 211370150 is a well-formed routing number. A mistyped digit almost always breaks that sum.

What is the Middlesex Federal Savings, F.A. routing number?

The Middlesex Federal Savings, F.A. routing number is 211370150. It is the primary ABA routing transit number registered to Middlesex Federal Savings, F.A., headquartered in Somerville, MA. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 28, 2026.

What is the Middlesex Federal Savings, F.A. wire routing number?

This page lists the primary routing number registered to Middlesex Federal Savings, F.A. The record does not say whether the bank uses the same number for wire transfers. Confirm the wire routing number with Middlesex Federal Savings, F.A. before sending a wire.

Is ABA number 211370150 the routing number for Middlesex Federal Savings, F.A.?

Yes. It is the primary routing number registered to Middlesex Federal Savings, F.A.

Which bank uses routing number 211370150?

It belongs to Middlesex Federal Savings, F.A., headquartered in Somerville, MA. It is the bank's primary ABA routing number (FDIC certificate 28368).

Routing numbers in Somerville, MA

Bank

Winter Hill Bank, FSB: 211370406

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

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