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N-400 Processing Time In 2026: A Guide For Chicago Applicants

N-400 Processing Time in 2026: A Guide for Chicago Applicants

Becoming a U.S. citizen is one of the most significant milestones in an immigrant’s life. For permanent residents in Chicago, Illinois ready to take that final step, understanding current N-400 processing times is essential to planning ahead. This guide covers what to expect at the Chicago Field Office in 2026.

What Is Form N-400?

Form N-400 is the Application for Naturalization, the official form filed with USCIS to begin the process of becoming a U.S. citizen. Most permanent residents are eligible to file after five years of holding a green card. An exception applies for those married to and living with a U.S. citizen: they may file after three years, provided they also meet continuous residence and physical presence requirements. As of 2026, the filing fee is $710 for online filing and $760 for paper filing. Online filing is recommended: it is faster to process and saves $50.

Current N-400 Processing Times: National and Chicago, Illinois (August 2026)

As of mid-2026, USCIS is taking between 6.5 to 17 months to process Form N-400 nationally, with a national average of approximately 7.9 months. However, that national figure reflects conditions across dozens of field offices and is not a reliable predictor for any individual applicant in Chicago, Illinois.

For Chicago specifically, the Chicago Field Office is currently one of the faster-processing offices in the country, ranked 4th fastest nationally as of May 2026, with current processing times of approximately 7 to 9 months.

One additional factor unique to Chicago, Illinois: the oath ceremony must be presided over by a federal judge rather than a USCIS officer. Judicial ceremonies are less frequent than administrative ceremonies, which can add 1 to 3 months to the time between your interview and your official naturalization.

2026 Important Update: Naturalization Processing Pause for Certain Countries

As of late 2025, USCIS has paused naturalization interviews and oath ceremonies for nationals of 39 designated countries under expanded security screening procedures. If you are a citizen of an affected country, your N-400 may be on hold regardless of the Chicago Field Office’s normal processing time, even if you have already passed your interview.

This pause is currently the subject of federal litigation and may change. If you believe your case may be affected, consult with an experienced immigration attorney in Chicago, Illinois to understand your options.

The N-400 Process Step by Step

  • Step 1: File Form N-400: Submit your completed application with the filing fee. Online filing ($710) is recommended for faster processing. Receipt processing typically takes 1 to 3 days for online filers versus 2 to 4 weeks for paper filers. Note: USCIS only accepts the 01/20/2025 edition of Form N-400. Submitting an outdated version will result in rejection.
  • Step 2: Biometrics: USCIS requires fresh biometrics (fingerprints and a new photo) for all new N-400 filers. You will receive a biometrics appointment notice after filing, typically within 4 to 8 weeks.
  • Step 3: Background Check: USCIS conducts a background check in parallel with your application review. In 2026, USCIS implemented an upgraded FBI security check system, which has extended review times for certain applicants, particularly those with complex immigration histories, prior removal proceedings, or prior immigration violations.
  • Step 4: Interview and Citizenship Test: You will be scheduled for a naturalization interview at the Chicago Field Office. At the interview, a USCIS officer will review your application, verify your eligibility, and administer the civics and English tests unless you qualify for an exemption. Note: USCIS implemented a revised civics test effective October 20, 2025. Applicants receive two attempts to pass. Failing adds at minimum 2 to 3 months to your timeline, so thorough preparation before your first interview is essential.
  • Step 5: Decision: USCIS may approve your application at the interview or take additional time to review your case. If approved, you will be scheduled for the Oath of Allegiance ceremony.
  • Step 6: Oath of Allegiance Ceremony: In Chicago, Illinois, the oath is administered by a federal judge. You are not a U.S. citizen until you take this oath. USCIS requires the oath to be taken within 120 days of approval.

What Can Delay Your N-400 Case?

Most N-400 delays are avoidable. The most common causes in 2026 include:

  • Criminal history documentation: any arrest, criminal charge, or court proceeding must be fully disclosed and supported by a certified certificate of disposition, even if the charge was dismissed or the record was expunged
  • Tax compliance issues: incomplete tax returns, missing transcripts, or an undisclosed IRS payment plan can cause USCIS to put your case on hold
  • Foreign travel: both extended trips abroad exceeding 6 months and frequent shorter trips that suggest you have not maintained your primary residence in the United States can raise continuous residence and physical presence questions
  • Enhanced security screening: USCIS implemented an upgraded FBI security check system in April 2026, which has extended review times for applicants with complex immigration histories, prior violations, or extended foreign travel
  • Good moral character issues: in 2026, USCIS is applying stricter good moral character guidelines and conducting broader record reviews, including tax compliance, family obligations, and prior conduct

Why Working with an Experienced Chicago Immigration Attorney Matters

Naturalization is the final step in what is often a very long immigration journey. At the Law Offices of Azita M. Mojarad, P.C., we believe that step deserves the same careful attention as every step that came before it. Incomplete documentation, undisclosed history, or errors in the application can trigger delays, a Request for Evidence, or in more serious situations, a denial.

As an experienced immigration lawyer in Chicago, Illinois, Azita M. Mojarad reviews every N-400 application for potential issues before filing, prepares clients thoroughly for the interview and citizenship test, and handles complex situations including prior criminal history, extended foreign travel, voter registration issues, and good moral character questions. We have guided thousands of Chicago and Chicagoland immigrants through the naturalization process for over 25 years.

Contact Us Today for Expert Immigration Legal Services

If you have questions about the N-400 process, naturalization eligibility, or any other immigration matter, please contact the Law Offices of Azita M. Mojarad, P.C. by emailing us at azita@azitalaw.com or calling 312.641.0771. We serve clients throughout Chicago, Illinois and the greater Chicagoland area.

Azita M. Mojarad

Azita M. Mojarad is the founder of the Law Offices of Azita M. Mojarad, P.C. For over 20 years, she has helped thousands of clients with immigration, divorce, criminal defense, and business law matters in Chicago and the greater Illinois area. She holds a J.D. from Loyola University Chicago School of Law and an M.B.A. from North Park University. Azita is AV Preeminent Rated by Martindale-Hubbell and recognized as a Leading Lawyer in Immigration and Divorce by the Leading Lawyers Network since 2012.

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