N-600K at St. Louis Field Office
N-600K is processed by USCIS.
Verified from USCIS on 2026-06-05
How N-600K compares to other forms at the St. Louis Field Office
Three other forms share the St. Louis docket: N-600 (certificate of citizenship) at 8.0 to 10.0 months, N-400 (naturalization) at 9.5 to 11.5 months, and I-485 (adjustment of status) at 10.0 to 16.0 months. N-600 has the fastest opening. I-485 has the widest range. N-600K sits at 8.5 to 9.0 months, a half-month band that is the tightest range at the office. From the N-600K floor to the office's overall ceiling stretches 7.5 months. Across the office's upper bounds, the N-600K ceiling joins 10, 11.5 in the count.
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Frequently Asked Questions
How long does N-600K take at St. Louis Field Office?
Current processing time for N-600K at St. Louis Field Office is 65 months to 65.5 months, based on the latest data from USCIS.
When was N-600K processing time data last updated?
The data was last updated on 2026-06-05, sourced from USCIS.
What factors affect N-600K 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.