Citizenship Guide
U.S. Citizenship Guide
Plain-language guides to naturalization, from Form N-400 to the oath ceremony, with links to the official USCIS sources.
Where to start
- Thinking about applying
- Preparing for the interview
- Interview passed
Becoming a citizen
- Naturalization: an overviewWhat becoming a U.S. citizen involves, from Form N-400 to the oath.
- Who can applyThe usual requirements for naturalization through Form N-400.
- The civics and English testsHow the naturalization tests work, including the 2025 civics test.
- Exceptions and accommodationsAge, long residence and disability can change the test requirements.
- Your naturalization interviewWhat happens at the interview and how to prepare.
- The oath ceremonyThe last step: taking the Oath of Allegiance.
After you become a citizen
Practice for the civics test
Try free timed mock exams, practice the interview out loud, or study by topic with questions and answers.
US Citizenship Test Prep is an independent educational resource made by ChowChow Labs. It is not affiliated with or endorsed by U.S. Citizenship and Immigration Services (USCIS) or any U.S. government agency. Official rules can change: always confirm details on uscis.gov. For questions about your own case, contact USCIS or a licensed immigration attorney or DOJ-accredited representative.