Argonne’s mailing address is officially changing from Argonne, Illinois, to Lemont, Illinois, at the request of the United States Post Office area postmaster.
Although the Lemont address was instituted two years ago, the Lemont Post Office continued to honor the Argonne, Illinois address. However, the postmaster has requested that Argonne finish the process of making the Lemont address standard for all correspondence.
The post office will continue to process mail and packages with the Argonne, Illinois address during the transition. While this transition takes place:
- There is no need to reprint business cards and stationery. You may use your current stock of stationery/documents until it runs out; at that time, please restock with the updated address. Contact the Communication and Public Affairs (CPA) Print Shop for details on forms and other paper documents. Business cards can be ordered through Xink and will show the Lemont address.
- Please update websites, forms, letterhead and other documents or materials to reflect Lemont, IL. Use 60439-4801 if a ZIP+4 address is required.
- Please update items that you have locally stored on your personal computer with the Lemont address, such as email, templates, forms, letterhead or other documents.
- If a controlled form requires an update, open a Vector ticket (Make a Request >> Communications and Creative Services >> Document Production) or email forms@anl.gov.
Many of the lab’s business systems already reflect the Lemont address and CPA has updated the lab’s websites.
If you have questions or concerns, please contact Greg Jonas, Facilities deputy division director at ext. 2-6542.