"Customers will simply complete a single form with questions that guide them through the process. In addition, the updated tool is now compatible with multiple Web browsers and confirms the change by email."
U.S. Citizenship and Immigration Services – Customer Service Tools
Change of Address. Have you moved? Help us ensure that you receive any notices or documents without delay. Most applicants with pending applications or petitions should notify us as soon as possible, no more than 10 days after your move.