How long is N-600 taking in Portland ME?
Each form has a published range for every office, and where yours is handled can change it by months.
N-600 · Application for Certificate of Citizenship
USCIS published these on September 17, 2026
USCIS posts
6 to 18 months
Portland ME
N-600 by office - fastest first
Pick one to see its dates above.
- Charlotte Amalie VI3–4 mo
- Christiansted VI4–4.5 mo
- Providence RI4–6.5 mo
- Cincinnati OH4–7.5 mo
- Manchester NH5–7 mo
- Columbus OH4–8.5 mo
Forms decided at a local field office, where which office you are assigned to changes the answer by months.
USCIS publishes the time by which 80% and 93% of cases were completed. Confirm on USCIS's processing times page.