Serving Tulsa, OK
601 South Boulder Avenue Suite 600
Tulsa, OK 74152
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