United States Citizenship and Immigration Services | United States Citizenship and Immigration Services

111 Massachusetts Ave NW, Washington, DC 20529-2260

Eligibility

Varies by service

Hours

Mon-Fri 8am-8pm Eastern Time customer service 24-hours automated service

Voice - Toll-Free TTY

Voice - Toll-Free Military Helpline: 877-CIS-4MIL

Voice - Toll-Free

Application process

Call, visit website, or write

Fees

Vary by application and petition

Service area

Administers programs related to the lawful immigration to the United States.

10/01/2025

Providing organization

United States Citizenship and Immigration Services

Administers programs related to the lawful immigration to the United States.