How long does it take for my naturalization application to be processed? The national average processing time for a naturalization application, as of May 31, 2020, is about 8 months. Learn more here about how long the naturalization process takes. Related articles How long does the Boundless process for citizenship take? What supporting documents do I need for naturalization? How do I change status from a K-3 visa to a marriage green card? Is there anything I need to do if my interview was cancelled by USCIS? What's a premium tax credit?