Bank routing number ยท North Adams, Massachusetts
Mountainone Bank Routing Number (ABA): 211871015
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The Mountainone Bank routing number is 211871015. It is the primary ABA routing transit number on the bank's FFIEC National Information Center record, refreshed here on October 27, 2026.
Mountainone Bank at a glance
Its CET1 capital ratio was 16.76% at Q2 2026, comfortably above the 7% level required once the capital conservation buffer is included.
- Total assets, Q2 2026
- $1.08B
- CET1 ratio, Q2 2026
- 16.76%
- Deposit insurance
- FDIC
- Regulator
- FDIC
- Domestic offices
- 6 FDIC institution directory, current count
- Latest call report
- Q2 2026, FFIEC 051
- Established
- 1848
Full financial profile · Is Mountainone Bank safe? · Mountainone Bank call report · Branch locations
Mountainone Bank routing numbers on file
| Routing number | Type | Status | Source |
|---|---|---|---|
| 211871015 | Primary ABA | Active | FFIEC NIC |
Record refreshed here on October 27, 2026. NIC holds one primary number per bank; Mountainone Bank publishes any other numbers it uses itself.
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, 7101, identify the institution within that district. The last digit, 5, 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 Mountainone Bank
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 Mountainone Bank checks or in its online banking. Ask the bank for wire instructions (www.mountainone.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 Mountainone Bank
Mountainone Bank is headquartered in North Adams, Massachusetts and was established in 1848. It is in the PITTSFIELD, MA metro area. It reported $1.08B in total assets and $774.3M in deposits for Q2 2026, the 45th largest of the 89 banks headquartered in Massachusetts. It reports 6 domestic offices. Its deposits have been FDIC insured since 1985. Its primary federal regulator is the FDIC. One other bank or credit union headquartered in North Adams has a routing number listed here.
What the digits in 211871015 mean
The first four digits, 2118, 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, 7101, identify the institution within its Federal Reserve district. The last digit, 5, is a check digit. Weighting the digits 3, 7 and 1 in turn gives 3 x 10 + 7 x 9 + 7 = 100, a multiple of 10, so 211871015 is a well-formed routing number. A mistyped digit almost always breaks that sum.
What is the Mountainone Bank routing number?
The Mountainone Bank routing number is 211871015. It is the primary ABA routing transit number registered to Mountainone Bank, headquartered in North Adams, MA. The number comes from the FFIEC National Information Center institution record, last refreshed here on October 27, 2026.
What is the Mountainone Bank wire routing number?
This page lists the primary routing number registered to Mountainone Bank. The record does not say whether the bank uses the same number for wire transfers. Confirm the wire routing number with Mountainone Bank before sending a wire.
Is ABA number 211871015 the routing number for Mountainone Bank?
Yes. It is the primary routing number registered to Mountainone Bank.
Which bank uses routing number 211871015?
It belongs to Mountainone Bank, headquartered in North Adams, MA. It is the bank's primary ABA routing number (FDIC certificate 90253).
Routing numbers of similar-size institutions in Massachusetts
- Credit union, North Adams, MA
- North Adams M E Federal Credit Union: 211884882
- Bank, Winchester, MA
- Winchester Savings Bank: 211370888
- Bank, Gloucester, MA
- Cape Ann Savings Bank: 211370862
- Bank, Norwood, MA
- Onelocal Bank: 211371285
- Bank, Haverhill, MA
- Pentucket Bank: 211370066
- Bank, Canton, MA
- Computershare Trust Company, N.A.: 011350024
- Credit union, Marlborough, MA
- Saint Mary's Credit Union: 211384214
- Bank, Adams, MA
- Adams Community Bank: 211871523
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Regulator records: FDIC BankFind (cert 90253) · FFIEC NIC profile (RSSD 97804)