Zip Code Change Notification
Our zip PLUS FOUR code has changed! The U.S. Postal Service has notified the IAM National Benefit Funds Office that our zip PLUS FOUR code has changed from 20003-3799 to 20003-4595 effective August 1st, 2021.
Moving forward, please send all mail to:
National IAM Benefit Trust Fund
99 M Street SE, Suite 600
Washington, DC 20003-4595.
Please note that mail addressed to the old zip PLUS FOUR code will still be delivered to the Benefit Fund Office, but we encourage you to use the new code for quicker delivery.