Is MEKCUS3W a valid SWIFT code?

Yes. MEKCUS3W has the right format and is in our directory for MERCK & CO., INC., RAHWAY. Confirm with the beneficiary that it is the bank that holds their account.

What is the difference between MEKCUS3W and MEKCUS3WXXX?

None. MEKCUS3W is the 8-character form of MEKCUS3WXXX; XXX at the end means the head office. Either works.

SWIFT/BIC · United States

MEKCUS3W

MERCK & CO., INC. · Head office · RAHWAY

Code details

SWIFT/BIC: MEKCUS3W (MEKCUS3WXXX)
Institution: MERCK & CO., INC.
Office: Head office
Branch code: XXX · head office
Address: 126 EAST LINCOLN AVENUE, PO BOX 2000, 07065-1310 RAHWAY
City: RAHWAY
Country: United States

What MEKCUS3W means

MEKCUS3WXXX

MEKCBank code
Four letters chosen by the institution.
USCountry code
United States (ISO 3166)
3WLocation code
Where the institution sits on the SWIFT network. A 1 in second place marks a passive participant.
XXXBranch code
XXX, or nothing at all, means the head office.

Paying an account at this bank

United States does not use IBAN: send the beneficiary’s local account number with this code. Check an IBAN →

Questions

Is MEKCUS3W a valid SWIFT code?: Yes. MEKCUS3W has the right format and is in our directory for MERCK & CO., INC., RAHWAY. Confirm with the beneficiary that it is the bank that holds their account.
What is the difference between MEKCUS3W and MEKCUS3WXXX?: None. MEKCUS3W is the 8-character form of MEKCUS3WXXX; XXX at the end means the head office. Either works.

Sending to MEKCUS3W?

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About this data

Codes are checked against our directory of banks on TrillioniPay corridors. Always confirm the code with the beneficiary’s bank before sending a payment. Last updated: 23 September 2026.

Institution names and addresses: Global Legal Entity Identifier Foundation (GLEIF) LEI data, available under CC0. The address is the legal entity’s registered or head-office address, which can differ from the office SWIFT lists.

SWIFT © and database rights August 2026. All rights reserved. This Mapping Table has been developed by SWIFT. Any use of the Mapping Table, in whole or in part, is subject to the BIC/LEI Mapping Table License Agreement as published with the Mapping Table available on GLEIF's website. The Mapping Table is updated monthly. For the latest BIC information and updates, always refer to www.swift.com/bic .