N-600K at Washington DC
Application for Citizenship and Issuance of Certificate Under Section 322
From USCIS data captured July 22, 2026
Application for Citizenship and Issuance of Certificate Under Section 322
28.5 – 56.5 months
Case inquiry possible for receipt dates on or before November 18, 2021.
Trend
Arrive Legal began archiving this data in July 2026. The trend chart unlocks once at least two weekly readings exist — history USCIS itself doesn't publish.
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Alerts: N-600K at Washington DC
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Frequently asked questions
How long does N-600K take at Washington DC?
Per USCIS data captured July 22, 2026, N-600K at Washington DC takes 28.5 – 56.5 months (80% of cases complete within that time).
When can I ask USCIS about my case?
Under the current data, USCIS accepts a N-600K case inquiry at Washington DC if your receipt date is on or before November 18, 2021. Use USCIS's e-Request tool.
Is this time a guarantee?
No. It is the time within which USCIS completed 80% of similar cases over the past six months. Every case is different; some take longer.
Check your case status at USCIS Case Status Online · Official source: USCIS Case Processing Times