Serving London, ON
450 Central Avenue Unit 407
London, ON N6B 2E8
Individuals who have been green card holders for five years (three years if married to a United States citizen) are eligible to apply for citizenship through the N-400 naturalization process.
The current average processing time for Form N-400 is a little over 12 months (as of June 2021). Generally, however, the speed of processing depends on the USCIS field office handling the application.
In addition to other requirements
Some applicants must submit additional supporting documents with their N-400, based on their particular circumstances, including:
Monday to Friday 9:00 to 5:00 by appointment