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United States Postal Inspection Service

If you believe you have been the victim of a crime involving the U.S. mail or need assistance with postal-related problems of a law enforcement nature, you should contact your nearest Postal Inspection Service office. Addresses and telephone numbers can be found in the government pages of your telephone book or by visiting the Postal Inspection Service website.

Contact the Agency or Department

Website: United States Postal Inspection Service

Contact In-Person: Find Your Local Postal Inspection Service Office

Address: Criminal Investigations Service Center
Attn: Mail Fraud
433 W Harrison Street, ROOM 3255

Chicago, IL 60699-3255

Toll-free: 1-877-876-2455