USCIS field offices · Updated November 1, 2026

USCIS Chicago field office: N-400 citizenship numbers and wait

USCIS's Chicago field office (CHI, Illinois) had 23,623 N-400 citizenship applications pending at the end of June 2026, up from 19,893 at the end of March 2026. From April to June 2026 it approved 946 and denied 280 while 5,077 new applications came in.

These are USCIS's own quarterly counts. For the wait, USCIS's processing times page gives its own estimate for the Chicago office (choose Form N-400), and your interview notice, not this page, tells you your date.

Chicago N-400 numbers, last two quarters

Source: USCIS, Form N-400 by field office, Fiscal Year 2026 Quarter 3 and Quarter 2. Totals include military naturalizations (652 received, 938 pending in April to June 2026. USCIS hides some small military counts). Approvals and denials in a quarter can be for applications filed earlier.

How long Chicago takes

USCIS's quarterly counts don't include a wait time. For USCIS's own estimate, use its processing times page and choose Form N-400 and the Chicago field office. Your interview notice gives your actual date.

Your citizenship interview at Chicago

• Field offices don't take walk-ins. You need an appointment, and your interview notice gives the place and time.
• The officer puts you under oath, goes through your N-400 and gives the English and civics tests. See what the officer asks, part by part and all 128 civics questions.
• Since May 18, 2026, lawyers and accredited representatives must attend field office interviews in person, except in limited circumstances.
• You get a written result (Form N-652) at the end: approved, continued (for documents or a retest 60 to 90 days later) or denied.

Check your own case

• USCIS field office locator (search by ZIP code): USCIS no longer has a page per office, so this is where to confirm which office serves your ZIP code. Your interview notice gives the address.
• USCIS processing times (pick Form N-400 and your field office): USCIS's own estimate for your office, updated separately from these counts.
• USCIS Immigration and Citizenship Data: the quarterly tables these numbers come from.

This is test and interview practice, not legal advice. For questions about your own case, talk to an immigration attorney. Visaful is not affiliated with U.S. Citizenship and Immigration Services (USCIS) or any government agency.