N-600 at St. Louis Field Office
N-600 is processed by USCIS.
Verified from USCIS on 2026-06-05
How N-600 compares to other forms at the St. Louis Field Office
St. Louis also handles N-600K (citizenship under section 322) at 8.5 to 9.0 months, N-400 (naturalization) at 9.5 to 11.5 months, and I-485 (adjustment of status) at 10.0 to 16.0 months. I-485 has a 6-month spread, the widest at the office. N-600K holds a half-month band. N-600 runs 8.0 to 10.0 months, the fastest opening of the four forms here and a 2-month band. That ceiling sits 6 months below I-485's upper bound. The lower bound opens 0.5 months before N-600K's floor.
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Frequently Asked Questions
How long does N-600 take at St. Louis Field Office?
Current processing time for N-600 at St. Louis Field Office is 10 months to 17.5 months, based on the latest data from USCIS.
When was N-600 processing time data last updated?
The data was last updated on 2026-06-05, sourced from USCIS.
What factors affect N-600 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.