N-400 at Denver Field Office
Form N-400, Application for Naturalization, is filed with USCIS to apply for US citizenship.
Verified from USCIS on 2026-06-05
How N-400 compares to other forms at the Denver Field Office
Three other forms share the Denver docket: N-600 (certificate of citizenship) at 10.0 to 12.5 months, I-485 (adjustment of status) at 12.0 to 22.0 months, and N-600K (citizenship under section 322) at 49.5 to 50.0 months. N-600 is fastest. N-600K opens far above the rest. N-400 clears in 10.5 to 13.5 months, the second-fastest of the four and a 3-month band. That floor opens 1.5 months earlier than the median sibling floor of 12. The widest sibling spread of 10 months is more than double the N-400 range.
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Frequently Asked Questions
How long does N-400 take at Denver Field Office?
Current processing time for N-400 at Denver Field Office is 11 months to 13.5 months, based on the latest data from USCIS.
When was N-400 processing time data last updated?
The data was last updated on 2026-06-05, sourced from USCIS.
What factors affect N-400 processing time?
Processing times vary based on application volume, case complexity, security checks, and the completeness of submitted documentation. Times shown are estimates and individual cases may differ.