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U.S. Citizenship and Immigration Services

The U.S. Citizenship and Immigration Services is responsible for processing immigration and naturalization applications and establishing policies regarding immigration services.

Contact the Agency or Department

Website: U.S. Citizenship and Immigration Services

Contact In-Person: Immigration and Naturalization Local Offices International Immigration Offices

Address: 111 Massachusetts Avenue, NW
MS 2260

Washington, DC 20529-2260

Toll-free: 1-800-375-5283
1-877-247-4645 (Military Help Line)

TTY: 1-800-767-1833

Forms: U.S. Citizenship and Immigration Services Forms