On April 1, 2011, all USCIS Change of Address and Alien’s Change of
Address forms (Forms AR-11 and AR-11 SR) changed filing locations. The
new address to file these forms is as follows:
U.S Department of Homeland Security
Citizenship and Immigration Services
Attn: Change of Address
1344 Pleasants Drive
Harrisonburg, VA 22801
USCIS notes that any change of address forms mailed to the old location
will be forwarded to the new Harrisonburg address until May 16. The
option of notifying USCIS of a change of address online is also
available at uscis.gov, but only for Form AR-11.