N-400 at Denver CO
Application for Naturalization
From USCIS data captured July 22, 2026
Application for Naturalization
12.5 – 15.5 months
Case inquiry possible for receipt dates on or before April 09, 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 Denver CO
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Frequently asked questions
How long does N-400 take at Denver CO?
Per USCIS data captured July 22, 2026, N-400 at Denver CO takes 12.5 – 15.5 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 Denver CO if your receipt date is on or before April 09, 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