Form N-600 Processing Time
The Form N-600 processing time ranges from about 4 to 6 months for many applicants. But that estimate only shows the final timeline for receiving a citizenship certificate. See what happens after N-600 submission. Once you file, your case moves through several USCIS stages:
N-600 Processing Time: Receipt of Application
After USCIS accepts your Form N-600 for processing, they send a receipt notice confirming your application. The mailed notice — Form I-797C, Notice of Action — usually arrives within 2 to 4 weeks. If the application is incorrect or incomplete, USCIS will reject it and return the package, delaying your request and increasing the overall N-600 processing time.
Save your N-600 receipt notice. It contains your 10-digit receipt number. You can use this receipt number to check your case status. If you didn’t receive a Notice of Action, you can make a case inquiry.
N-600 Rejection Statistics
Source: USCIS FY2025
Biometrics Appointment
Approximately 4 to 6 weeks after filing, USCIS will likely schedule a biometrics appointment to collect your fingerprints, photo, and signature for background checks. The appointment notice lists the date, time, and location. The visit usually takes less than 20 minutes. Attend as scheduled — rescheduling can delay your N-600 processing time.
To learn more about what happens at the appointment, what to take and where you'll go, see our overview of the USCIS biometrics appointment →
Historical N-600 Processing Times at USCIS
The graph below shows median N-600 processing times (in months) over the past 10 fiscal years. USCIS has generally kept timelines stable, but delays can still occur. Prepare carefully and file promptly to avoid unnecessary setbacks.
Source: USCIS
Interview Appointment
USCIS may schedule an interview for Form N-600, but many applicants are approved without one. The decision depends on the strength of your evidence. When documentation clearly proves citizenship, interviews are often unnecessary. If required, the interview is typically scheduled about 3–5 months after filing.
If an interview is required, it is usually straightforward and focused on verifying eligibility. Bring original documents and certified translations, as USCIS will review the same evidence submitted with your application. A well-prepared application that avoids an interview is one of the most effective ways to optimize the N-600 processing time.
N-600 Backlog Report
The graph below shows the number of open cases at the end of each fiscal year. USCIS managed to keep volume mostly in check after the pandemic. However, sustained higher volumes of applications may contribute to longer processing times if not reduced.
Source: USCIS
N-600 Processing Time: Receive Certificate of Citizenship
After approval, the final step in the N-600 processing timeline is receiving your Certificate of Citizenship. USCIS does not mail the certificate. Instead, they schedule an in-person appointment — often called an administrative oath — to verify identity, review documents, and issue the certificate directly.
Applicants age 14 or older may take a brief oath, while younger children are typically exempt.
You’ll usually receive the appointment notice within a few weeks to a couple of months after approval, depending on your local USCIS office.
Affordable Immigration Support For N-600 Preparation
What If Your N-600 Processing Time Is Taking Too Long?
If your N-600 processing time seems longer than expected, you’re not alone. USCIS processing times can vary widely, and delays are common depending on workload, background checks, and case complexity.
Is Your Case Outside Normal Processing Time?
USCIS publishes estimated processing times for Form N-600. If your case is still within that range, it may not be considered delayed. However, if your case is outside normal processing time, you may be able to take action.
- Check your USCIS case status online
- Compare your receipt date with current USCIS processing times
- Review any notices or requests from USCIS
Common Reasons for N-600 Delays
- Requests for Evidence (RFE)
- Background check processing
- High USCIS workload
- Administrative oath scheduling
How to Submit an Inquiry
If your N-600 processing time is outside the normal range, you can submit an “outside normal processing time” inquiry through USCIS. This allows you to request an update on your case.