Baltimore Field Office
- Address
- 3701 Koppers Street
Halethorpe, MD 21227 - Hours
- By appointment only; no walk-ins. USCIS no longer publishes hours for individual field offices.
- Phone
- USCIS Contact Center, 800-375-5283
- None published
- District
- Washington
- USCIS page
- uscis.gov
What happens here
- Interviews for applications other than asylum, including green cards (Form I-485) and naturalization (Form N-400)
- Naturalization oath ceremonies
- In-person appointments booked through the USCIS Contact Center for matters the website and phone line cannot settle
- Emergency advance parole (Form I-131) by appointment
Area served
Serves 24 counties: in Maryland, Allegany, Anne Arundel, Baltimore, Baltimore City, Calvert, Caroline, Carroll, Cecil, Charles, Dorchester, Frederick, Garrett, Harford, Howard, Kent, Montgomery, Prince Georges, Queen Annes, Saint Marys, Somerset, Talbot, Washington, Wicomico and Worcester.
On the map
Also in MD
Check before you go. Take the appointment notice; the address on it governs, even where it differs from this page. Offices close for weather and building problems; USCIS reschedules automatically when that happens. Compiled 2026-09-06.