I-485 at St. Louis Field Office
Form I-485, Application to Register Permanent Residence or Adjust Status, is filed with USCIS to apply for a Green Card.
Verified from USCIS on 2026-06-05
How I-485 compares to other forms at the St. Louis Field Office
At St. Louis, three citizenship forms accompany I-485: N-600 (certificate of citizenship) at 8.0 to 10.0 months, N-600K (citizenship under section 322) at 8.5 to 9.0 months, and N-400 (naturalization) at 9.5 to 11.5 months. The three siblings cap at 11.5 months. I-485 spans 10.0 to 16.0 months, a 6-month spread, the widest range and highest ceiling at the office. Its ceiling sits 4.5 months above N-400's upper bound. The I-485 floor opens exactly where N-600's ceiling closes.
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Frequently Asked Questions
How long does I-485 take at St. Louis Field Office?
Current processing time for I-485 at St. Louis Field Office is 10.5 months to 17.5 months, based on the latest data from USCIS.
When was I-485 processing time data last updated?
The data was last updated on 2026-06-05, sourced from USCIS.
What factors affect I-485 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.