I-90 vs N-400
Side-by-side comparison of USCIS processing times for I-90 and N-400.
I-90 →
Processing Time Range
8.5 months to 11.5 monthsOffices1
Fastest OfficeService Center Operations Directorate (8.5 months to 11 months)
Slowest OfficeService Center Operations Directorate (11 months to 11.5 months)
N-400 →
Processing Time Range
5.5 months to 16.5 monthsOffices90
Fastest OfficeHialeah Field Office (5.5 months to 7.5 months)
Slowest OfficeLawrence Field Office (15 months to 16.5 months)
Frequently Asked Questions
Which is faster, I-90 or N-400?
I-90 currently takes 8.5 months to 11.5 months while N-400 takes 5.5 months to 16.5 months. N-400 generally processes faster.
How many offices process I-90 vs N-400?
I-90 is processed at 1 offices, while N-400 is processed at 90 offices.
When was this comparison last updated?
This data was last updated on 2026-04-11 from USCIS.
Source: WaitVisa.com — USCIS, updated 2026-04-11