Because you only keep it by giving it away (hmmm, heard that somewhere, lived that way, turned out to be true, so…) here is how you can file your delinquent FBAR (Form TD F 90-22.1) by FedEx, DHL, or UPS.
Your street address is:
IRS Detroit Computing Center
Attn: FBAR Mail Room, 4th Floor
985 Michigan Ave.
Detroit, MI 48226
The contact phone number for the delivery service is 313-234-1062.
Yay. Now if you are in the wilds of deepest Borneo you can get your paper reliably delivered to Detroit.
And isn’t there something terribly quaint and retro about calling a place a “Computing Center”? It’s kind of like the “typing pool” from the 1950s.