I-90 vs N-400
Side-by-side comparison of USCIS processing times for I-90 and N-400.
I-90 →
Processing Time Range
6 months to 12.5 monthsOffices1
Fastest OfficeService Center Operations Directorate (6 months to 9 months)
Slowest OfficeService Center Operations Directorate (10.5 months to 12.5 months)
N-400 →
Processing Time Range
8 months to 26 monthsOffices90
Fastest OfficeCincinnati Field Office (8 months to 11.5 months)
Slowest OfficeLawrence Field Office (17.5 months to 19.5 months)
Frequently Asked Questions
Which is faster, I-90 or N-400?
I-90 currently takes 6 months to 12.5 months while N-400 takes 8 months to 26 months. I-90 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 2026-09-08 from USCIS.
Source: WaitVisa.com — USCIS, updated 2026-09-08