N-400 at Chicago IL
Application for Naturalization
From USCIS data captured August 31, 2026
Application for Naturalization
11.5 – 16.5 months
Case inquiry possible for receipt dates on or before April 20, 2025.
In plain English
- The months range means: USCIS finished 80% of its recent N-400 cases at this office within that time. It's a reference point — some cases finish sooner, some later.
- "Case inquiry possible…" means: if USCIS received your case on or before that date, your wait is already longer than normal and you can officially ask USCIS about it (it's called an e-Request, and it's free).
- The chart below shows how the posted wait has moved over time — orange = our weekly captures; gray = archival history.
Track this N-400 wait at Chicago IL
We'll email you only when this USCIS time changes, with the old value, new value, and trend.
Trend
Latest published wait
16.5 months
As of Aug 31, 2026 · Arrive Legal capture
Stable
No change since Aug 24, 2026
View 66 exact readings
- Aug 31, 2026 · Arrive Legal capture16.5 months
- Aug 24, 2026 · Arrive Legal capture16.5 months
- Aug 18, 2026 · Arrive Legal capture16.5 months
- Aug 13, 2026 · Arrive Legal capture14 months
- Jul 22, 2026 · Arrive Legal capture14 months
- Jun 24, 2026 · archival history11.5 months
- May 23, 2026 · archival history10.5 months
- Apr 22, 2026 · archival history10 months
- Mar 17, 2026 · archival history9.5 months
- Feb 19, 2026 · archival history9.5 months
- Jan 15, 2026 · archival history9.5 months
- Dec 19, 2025 · archival history10 months
- Dec 9, 2025 · archival history10 months
- Oct 22, 2025 · archival history10.5 months
- Sep 30, 2025 · archival history10.5 months
- Sep 19, 2025 · archival history10.5 months
- Sep 6, 2025 · archival history10.5 months
- Jul 31, 2025 · archival history10.5 months
- Jun 17, 2025 · archival history10.5 months
- May 20, 2025 · archival history10 months
- Apr 22, 2025 · archival history10 months
- Mar 18, 2025 · archival history10 months
- Mar 4, 2025 · archival history10 months
- Jan 30, 2025 · archival history10 months
- Dec 21, 2024 · archival history10 months
- Nov 26, 2024 · archival history10.5 months
- Nov 23, 2024 · archival history10.5 months
- Oct 19, 2024 · archival history10.5 months
- Oct 1, 2024 · archival history10.5 months
- Aug 22, 2024 · archival history11 months
- Aug 20, 2024 · archival history11 months
- Aug 8, 2024 · archival history11 months
- Jun 26, 2024 · archival history11.5 months
- Jun 4, 2024 · archival history11.5 months
- Apr 30, 2024 · archival history11.5 months
- Apr 9, 2024 · archival history11 months
- Apr 3, 2024 · archival history11 months
- Mar 30, 2024 · archival history11 months
- Mar 1, 2024 · archival history10.5 months
- Jan 23, 2024 · archival history10 months
- Jan 3, 2024 · archival history10 months
- Dec 28, 2023 · archival history11 months
- Dec 13, 2023 · archival history11 months
- Dec 2, 2023 · archival history11 months
- Nov 14, 2023 · archival history11.5 months
- Nov 2, 2023 · archival history11.5 months
- Sep 30, 2023 · archival history13.5 months
- Aug 24, 2023 · archival history15.5 months
- Jul 14, 2023 · archival history16 months
- Jun 21, 2023 · archival history16 months
- Jun 10, 2023 · archival history16 months
- May 5, 2023 · archival history16 months
- Mar 24, 2023 · archival history16 months
- Feb 7, 2023 · archival history25 months
- Dec 2, 2022 · archival history25 months
- Dec 1, 2022 · archival history25 months
- Nov 3, 2022 · archival history25.5 months
- Sep 28, 2022 · archival history25 months
- Sep 27, 2022 · archival history25 months
- Jul 15, 2022 · archival history19.5 months
- Jun 7, 2022 · archival history19 months
- May 27, 2022 · archival history19 months
- May 11, 2022 · archival history18 months
- May 6, 2022 · archival history18 months
- Mar 30, 2022 · archival history16.5 months
- Mar 21, 2022 · archival history16.5 months
The national N-400 line
Cases waiting
660,692
nationwide (FY2026 Q2)
The line is
growing
+23.6% since FY2025 Q4
What that usually means
More applications than decisions — pressure toward longer waits.
From USCIS's official quarterly report. See the full outlook and methodology →
Is your case delayed?
Enter your receipt date — the comparison happens in your browser.
The calculation runs in your browser — we don't store your date or any case details.
Related forms
Other USCIS forms commonly tracked in the same process — listed for reference, not as guidance on what to file.
Frequently asked questions
How long does N-400 take at Chicago IL?
Per USCIS data captured August 31, 2026, N-400 at Chicago IL takes 11.5 – 16.5 months (80% of cases complete within that time).
When can I ask USCIS about my case?
Under the current data, USCIS accepts a N-400 case inquiry at Chicago IL if your receipt date is on or before April 20, 2025. Use USCIS's e-Request tool.
Is this time a guarantee?
No. It is the time within which USCIS completed 80% of similar cases over the past six months. Every case is different; some take longer.
Check your case status at USCIS Case Status Online · Official source: USCIS Case Processing Times