Maryland is served by the Baltimore District Office. The office is located at the Fallon Federal Building; 31 Hopkins Plaza; Baltimore, MD 21201. The office is opened from 7:30am until 4:00pm, Monday through Thursday. On Friday, the office closes at 1:00pm. Click here to find the INS USCIS Immigration Forms you need! Click Here for Immigration Information, Reports, and Frequent Questions Click here to find the immigration books and manuals you need!