Form N-600K (Application for Citizenship and Issuance of Certificate Under Section 322): At a typical office, half of N-600K cases finish within about 14 months and 8 in 10 within about 17 months. The full range across case types and offices runs from 3.5 months to 5.5 years (USCIS data, August 17, 2026).
Trend: N-600K processing is about the same as a year ago (a typical office's median was 14 months then and is 13.8 months now).
Processed at 90 offices. At a typical office, half of cases finish within about 14 months and 8 in 10 within about 17 months. The fastest offices report medians near 3.5 months, while the slowest report nearly-all times of about 5.5 years. Office-by-office numbers are on each office page.
Use the Processing Times tool to add your filing date and see a personalized estimate for your pending case, or explore the Department of Labor queues and the Visa Bulletin waiting line on the same page.