N-600K at Philadelphia Field Office
N-600K is processed by USCIS.
Verified from USCIS on 2026-06-05
How N-600K compares to other forms at the Philadelphia Field Office
At Philadelphia, three other forms accompany N-600K: N-600 (certificate of citizenship) at 6.0 to 8.5 months, N-400 (naturalization) at 8.0 to 10.5 months, and I-485 (adjustment of status) at 11.0 to 18.0 months. N-600 is fastest. I-485 has a 7-month range. N-600K spans 14.0 to 28.5 months, a 14.5-month spread, the widest range and highest ceiling at the office. On upper bounds, N-600K sits 4th of 4 forms here. That ceiling is the highest the office posts across all 4 forms.
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Frequently Asked Questions
How long does N-600K take at Philadelphia Field Office?
Current processing time for N-600K at Philadelphia Field Office is 12 months to 28.5 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.