Updated May 2026

Form N-400 Processing Time at Potomac Service Center

Newer center that handles certain online-filed cases and employment authorization. Receipt numbers begin with IOE.

Current processing range
10–20months

N-400 processing includes biometrics, interview, and oath ceremony. The oath ceremony is the final step to becoming a US citizen.

About the PSC
Full name
Potomac Service Center
Location
Arlington, VA
Receipt prefix
IOE
Common abbreviation
PSC
Center notes

Specifically handles cases filed online through my.uscis.gov. IOE receipt numbers indicate online filing. Generally processes EAD renewals efficiently.

How to confirm your case is at the PSC

Your receipt number on Form I-797C (Notice of Action) begins with a 3-letter code that identifies which USCIS service center received your application.

Your receipt number starts with:
IOEXXXXXXXXXX
= Your case is at the Potomac Service Center

If your receipt number starts with a different prefix, your case is at a different service center. See all service centers for Form N-400 →

Check official processing times
See USCIS's current estimates for your exact form type and category
USCIS processing times →

Frequently asked questions

How long does Form N-400 take at the PSC in 2026?+
Form N-400 at the USCIS Potomac Service Center currently takes approximately 10–20 months. N-400 processing includes biometrics, interview, and oath ceremony. The oath ceremony is the final step to becoming a US citizen.
How do I know if my Form N-400 is at the PSC?+
Check your Form I-797C (Notice of Action) receipt number. If it starts with "IOE", your case is at the Potomac Service Center. Newer center that handles certain online-filed cases and employment authorization. Receipt numbers begin with IOE.
What does a IOE receipt number mean?+
IOE receipt numbers are issued by the USCIS Potomac Service Center in Arlington, VA. The prefix identifies which service center processed your filing.
Is the PSC faster or slower than other USCIS service centers?+
Processing times vary by form type and current workload. Specifically handles cases filed online through my.uscis.gov. IOE receipt numbers indicate online filing. Generally processes EAD renewals efficiently. Always check the official USCIS processing times page for the most current estimates.
Can I request expedited processing of my Form N-400 at the PSC?+
Yes. USCIS allows expedite requests for qualifying situations: severe financial loss, urgent humanitarian reasons, US government interests, or USCIS error. Submit your request through your online USCIS account or by calling 1-800-375-5283.

Form N-400 at other service centers

Form N-400 at CSC (WAC) →Form N-400 at VSC (EAC) →Form N-400 at NSC (LIN) →Form N-400 at TSC (SRC) →Form N-400 at NBC (MSC) →

Got a status update on your Form N-400 from the PSC? Paste it in for a plain-English explanation.

Decode your status message →

GreenLight is an independent tool and is NOT affiliated with USCIS, DHS, or any US government agency. Nothing on this page constitutes legal advice. Always verify at my.uscis.gov.