USCIS Service Centers Explained: Which One Handles Your Case?
A detailed guide to every USCIS service center — what they are, which forms they handle, how to find which one is processing your case, and what it means for your timeline.
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What are USCIS service centers?
USCIS service centers are large processing facilities where most immigration applications and petitions are adjudicated. Unlike field offices (which handle interviews and local services), service centers process cases remotely — officers review documents without meeting applicants in person.
Each service center has its own workforce, case queue, and processing speed. This means the same form type can have significantly different processing times depending on which center handles your case. Knowing which office has your case tells you which processing times to compare yours with.
All USCIS service centers
| Code | Full Name | Location | Primary Forms |
|---|---|---|---|
| SCD | Service Center Operations Directorate | A directorate, not one building | Oversees the service centers; the office shown on some IOE cases |
| NBC | National Benefits Center | Lee's Summit, Missouri | I-130, I-485, N-400 (initial processing) |
| TSC | Texas Service Center | Dallas, Texas | I-140, I-129, I-765, I-131 |
| CSC | California Service Center | Laguna Niguel, California | I-129, I-140, I-360 |
| NSC | Nebraska Service Center | Lincoln, Nebraska | I-140, I-129, I-765 |
| VSC | Vermont Service Center | St. Albans, Vermont | I-130, I-360, I-918 (U-Visa) |
| PSC | Potomac Service Center | Washington, D.C. area | I-730, refugee/asylee follow-to-join |
IOE cases and SCD
A receipt number that starts with IOE doesn't tell you which office has your case. IOE is the prefix for cases in ELIS, USCIS's electronic case system: cases filed online get one, and so do many paper filings. ELIS cases are worked at service centers, the National Benefits Center and field offices.
In your internal API data, the office holding your case, when USCIS has set one, is the location code in the receipt_details endpoint. Some IOE cases show SCD (the Service Center Operations Directorate, which oversees the service centers); others show NBC (the National Benefits Center), FOD (the Field Operations Directorate) or a field office.
How to find your service center
There are several ways to identify which service center is handling your case:
- Receipt number prefix (older receipts): MSC = NBC, SRC = TSC, WAC = CSC, LIN = NSC, EAC = VSC. IOE names no office.
- Internal API data: The
locationfield in your API response shows the office code, when USCIS has set one - Receipt notice: Your I-797C receipt notice lists the service center address where your case is being processed
Does your service center affect processing time?
It can. Each office has its own staffing and caseload. USCIS publishes processing times by form and office on its processing times page.
For an IOE case, compare with the times for the office your location data names. Our community timelines show how long cases shared by other applicants took, as history rather than a forecast for yours.
Case transfers between centers
Sometimes USCIS transfers cases between service centers to balance workloads or because a case requires interview-based adjudication at a field office. Transfers are recorded as event code IP in the internal API. A transfer often adds time, and USCIS doesn't publish how much.
Frequently asked questions
Can I choose which service center processes my case?
No. USCIS assigns your case to a service center based on the form type, your filing method (online vs. paper), and your geographic location. You cannot request a specific center.
What does SCD mean in my case data?
SCD stands for Service Center Operations Directorate, the part of USCIS that oversees the service centers. It's not one building. Some IOE cases show it as their location; others show the National Benefits Center or a field office.
Is NBC the same as MSC?
Essentially yes. NBC (National Benefits Center) is the current name, and MSC (Missouri Service Center) is the receipt prefix code used for cases processed there. Cases with MSC receipt numbers are processed at the National Benefits Center in Lee's Summit, Missouri.
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