N-600 at Chicago Field Office
N-600 is processed by USCIS.
Verified from USCIS on 2026-06-05
How N-600 compares to other forms at the Chicago Field Office
At Chicago, three other forms run alongside N-600: N-400 (naturalization) at 7.5 to 10.0 months, I-485 (adjustment of status) at 10.5 to 25.0 months, and N-600K (citizenship under section 322) at 27.0 to 52.0 months. N-400 clears fastest. N-600K reaches the highest ceiling and widest range, a 25-month spread. N-600 sits at 13.5 to 15.0 months, a 1.5-month band, the tightest at the office. The lower bound opens 3 months after I-485's floor. Its 1.5-month band is the tightest of the 4 forms here.
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Frequently Asked Questions
How long does N-600 take at Chicago Field Office?
Current processing time for N-600 at Chicago Field Office is 13.5 months to 15.5 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.