N-400 at Detroit MI
Application for Naturalization
From USCIS data captured July 22, 2026
Application for Naturalization
11 – 14 months
Case inquiry possible for receipt dates on or before May 31, 2025.
Trend
Arrive Legal began archiving this data in July 2026. The trend chart unlocks once at least two weekly readings exist — history USCIS itself doesn't publish.
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Alerts: N-400 at Detroit MI
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Frequently asked questions
How long does N-400 take at Detroit MI?
Per USCIS data captured July 22, 2026, N-400 at Detroit MI takes 11 – 14 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 Detroit MI if your receipt date is on or before May 31, 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