The street address of the Internal Revenue Service headquarters is 1111 Constitution Ave. NW, Washington, DC 20224. The IRS website address is www.IRS.gov. The website provides no main email address for contacting the agency, but instead offers a Web form for sending email.Continue Reading
The IRS also has local offices known as Taxpayer Assistance Centers in all 50 states, the District of Columbia, Puerto Rico, London and Paris.
The IRS headquarters building is considered a historic site. It was built between 1928 and 1936 by architect Louis A. Simon. Much of its interior has been remodeled and is used for everyday office work.Learn more about Branches of Government