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Processing times / N-400 /

USCIS · FORM N-400 · FIELD OFFICE POO

N-400 at Portland OR

Application for Naturalization.

14.5–17.5 monthspublished processing time
75 of 90offices, ordered from shortest published time
May 11, 2025receipt date for a case inquiry
How USCIS describes these numbers: “We generally process cases in the order we receive them. This processing time is based on how long it took us to complete 80% of adjudicated cases over the past six months. Each case is unique, and some cases may take longer than others. Processing times should be used as a reference point, not an absolute measure of how long your case will take to be completed.”

Source: USCIS, Check Case Processing Times (N-400, Application for Naturalization, Portland OR), published September 17, 2026; data from March 2026 to August 2026. Recorded weekly by greencardline since October 17, 2026. What these numbers mean.

USCIS quarterly counts for this office

QuarterReceivedApprovedDeniedPending at end of quarter
FY2024 Q11,9072,0241212,833
FY2024 Q32,1291,9221073,666
FY2024 Q42,3941,9181234,029
FY2025 Q12,3592,077944,256
FY2025 Q22,7432,1121384,726
FY2025 Q32,5262,4791374,729
FY2025 Q42,2621,1131145,757
FY2026 Q21,373560677,576
FY2026 Q31,359351398,599

Source: USCIS performance data for Form N-400 by field office (each quarter links to its file on uscis.gov). Totals across all categories of N-400 at this office. "Withheld" means USCIS suppressed a small number.

All 90 offices for N-400