Naturalization (N-400)

N-400 is among the longest-waiting USCIS form types tracked here, averaging 390 days — roughly 13 months, well over a year. Multi-year processing typically reflects per-country quotas under the Immigration and Nationality Act, severe receipt-versus-completion imbalances at the adjudicating service centers, or stacked dependencies on prior petitions.

Application for U.S. citizenship by eligible permanent residents who meet residency and other requirements. The official adjudicator is U.S. Citizenship and Immigration Services (USCIS). For applicants outside the United States, the U.S. Department of State Bureau of Consular Affairs handles consular processing through embassies and consulates.

N-400 carries a 91% approval rate, putting it among the highest-approval USCIS form types. Rates this high signal well-defined eligibility criteria and limited discretionary review — most denials trace to incomplete filings rather than substantive ineligibility. The cross-form USCIS average across the 8 categories tracked here is 73%, so N-400 sits above the agency-wide benchmark.

Filing volume for N-400 has been increasing in recent USCIS reporting periods. Rising receipts without matching adjudicator capacity is the single most common cause of growing backlogs, and is the dynamic the agency cites most often when explaining processing-time slippage.

USCIS publishes form-type performance data quarterly. The current dataset reflects fiscal year 2023 adjudication, covering 2.1M total applications across 198 countries and 63 field offices. The DHS Office of Homeland Security Statistics publishes the annual Yearbook of Immigration Statistics, which provides historical baselines this dataset cross-checks against.

Processing time is the average number of days from USCIS receipt of a complete filing to final adjudication, sourced from quarterly USCIS performance reports. Approval rate is computed as approved cases divided by completed cases (approvals plus denials), excluding still-pending applications. All values are aggregated nationally; per-service-center variation can be substantial. Read the full VisaTracker methodology for definitions, edge cases, and refresh cadence.

Note: This page presents general statistics, not legal or immigration advice. Eligibility, evidence requirements, and case-specific timing should be discussed with a licensed immigration attorney or an accredited representative recognized by the U.S. Department of Justice.