Question: how long does it take to become a citizen after you apply?
Answer: For example, the processing time range for naturalization applications (Form N400) at the Seattle, WA field office was 15 to 16.5 months, as of September 12, 2018. The first number reflects “the time it takes to complete 50% of cases (the median),” while the second number refers to the completion time for 93% of cases.