N-400 at Boston Field Office
Form N-400, Application for Naturalization, is filed with USCIS to apply for US citizenship.
Verified from USCIS on 2026-06-05
How N-400 compares to other forms at the Boston Field Office
At Boston, three other forms run alongside N-400: N-600K (citizenship under section 322) at 7.5 to 23.5 months, I-485 (adjustment of status) at 8.5 to 18.5 months, and N-600 (certificate of citizenship) at 15.5 to 31.0 months. N-600 reaches the highest ceiling. N-600K spans the widest range. N-400 clears in 10.5 to 12.0 months, a tight 1.5-month band, the narrowest at the office. On upper bounds, N-400 sits 1st of 4 forms here. The N-400 ceiling lands 19 months below the office's overall maximum.
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Frequently Asked Questions
How long does N-400 take at Boston Field Office?
Current processing time for N-400 at Boston Field Office is 11 months to 13 months, based on the latest data from USCIS.
When was N-400 processing time data last updated?
The data was last updated on 2026-06-05, sourced from USCIS.
What factors affect N-400 processing time?
Processing times vary based on application volume, case complexity, security checks, and the completeness of submitted documentation. Times shown are estimates and individual cases may differ.