Naturalization residency requirements: how travel history and the I-94 decide

Two requirements, both mandatory

1. Continuous residence

• 5 years for most LPRs.
• 3 years for LPRs married to and living with a U.S. citizen throughout.
• You must have maintained residence in the U.S. throughout — travel is fine, extended breaks are not.

2. Physical presence

• 5-year track: at least 30 months (~900+ days) physically in the U.S.
• 3-year track: at least 18 months.
• Counted by day: entry day through the day before departure counts as U.S. presence.

How a single trip abroad affects continuous residence

• < 6 months: generally fine.
• 6 months to 1 year: presumptive break in continuous residence. You may rebut with evidence you didn't abandon U.S. residence (family in U.S., ongoing employment, home, tax filings, etc.). Expect interview scrutiny.
• ≥ 1 year: outright break, unless you filed Form N-470 before leaving (narrow — qualifying U.S. employer assignments, religious workers, etc.).
• After a break: you generally must wait 4 years and 1 day after your return (2 years 1 day on the 3-year track) before filing.

How USCIS actually checks

1. N-400 requires listing every departure in the past 5 (or 3) years — dates, duration, destination.
2. USCIS pulls CBP entry/exit records — the same dataset behind "View Travel History" at i94.cbp.dhs.gov.
3. Mismatches → interview questions. Serious mismatches can be treated as false testimony, damaging good moral character and risking denial or fraud referral.

Why the I-94 / travel history stays central

• LPRs no longer receive a new I-94 at each entry — the passport gets an admission stamp instead.
• But CBP travel history still logs every entry and exit — date, port, flight — for all modes.
• You can pull ~10 years of records for free from the CBP site. Do this before filing N-400.

Practical N-400 checklist

1. Pull travel history from i94.cbp.dhs.gov and save as PDF.
2. Cross-check with passport stamps, tickets, and calendars. Add any missing short trips (Canada, Mexico, Caribbean) — they're all in CBP's system.
3. Tally: days abroad per calendar year, any single trip > 180 days, total days present.
4. If you had long absences, gather residence-maintenance evidence: lease/mortgage, tax filings, bank / credit card activity, family in the U.S., ongoing U.S. employer relationship.

Common misconceptions

• "5 years as an LPR = ready to naturalize." Only if both continuous residence and physical presence are met.
• "Trips under 6 months are always safe." Repeated near-6-month trips can still raise continuous-residence concerns.
• "Unstamped short trips don't need to be listed." They do. CBP has them.
• "Filing taxes as a non-resident (1040-NR) is unrelated." It's strong evidence of abandoning residence and almost always fatal to N-400.

This site provides general information only. Long absences, past 1040-NR filings, N-470 usage, or reentry permits — talk to an immigration attorney before filing.