N-400 at Columbus 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 Columbus Field Office
At Columbus, three other forms accompany N-400: N-600 (certificate of citizenship) at 4.0 to 8.0 months, I-485 (adjustment of status) at 11.0 to 23.0 months, and N-600K (citizenship under section 322) at 14.0 to 28.0 months. N-600 is fastest. N-600K reaches the highest ceiling. N-400 clears in 8.5 to 10.0 months, a tight 1.5-month band, the second-fastest at the office. Its 9.2-month midpoint runs 4.1 months below the office average. That ceiling sits 18 months below N-600K's upper bound.
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Frequently Asked Questions
How long does N-400 take at Columbus Field Office?
Current processing time for N-400 at Columbus Field Office is 8.5 months to 10 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.