Newark, located in Essex County, has the distinction of being New Jersey's largest city. As such, it boasts some of the most ethnically diverse immigrant populations anywhere. Additionally, the USCIS Main District Office is located in Newark. The address is 970 Broad Street, Newark, New Jersey 07102. The District Director is John E. Thompson. There is, however, a new Field Office Director. Her name is Randi C. Borgen.
If you summoned to appear for an interview in Newark, we would recommend that you arrive at least 45 minutes early. Parking around the city is plentiful. However, the line to get inside the Federal Building can be very long, especially during the winter. Visitors should make sure to bring their appointment letters, ID, and leave any items at home that might be possibly considered a "weapon." Directions to the Newark Field Office can be found here.
Also remember that generally speaking, one cannot just go the immigration and speak with an immigration officer about one's case. Immigration applicants must book an INFOPASS appointment online ahead of time. Once you have an INFOPASS appointment, you will be able to proceed to the 3rd Floor to speak with an information officer.