N-600K at Washington DC Field Office
N-600K is processed by USCIS.
Verified from USCIS on 2026-06-05
How N-600K compares to other forms at the Washington DC Field Office
At Washington DC, three other forms run at much shorter ranges: N-600 (certificate of citizenship) at 8.0 to 11.0 months, N-400 (naturalization) at 9.5 to 11.0 months, and I-485 (adjustment of status) at 13.0 to 20.5 months. The three siblings cap at 20.5 months. N-600K spans 38.5 to 56.5 months, an 18-month spread, the widest range and highest ceiling at the office. Its upper bound sits 45.5 months past N-400's ceiling. The N-600K band runs 16.5 months wider than N-400's tighter range.
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Frequently Asked Questions
How long does N-600K take at Washington DC Field Office?
Current processing time for N-600K at Washington DC Field Office is 31 months to 56.5 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.