A detailed breakdown of the four service centers that handle OPT and STEM OPT EAD applications — what to expect at each, and how they compare.
You do not get to choose your USCIS service center. Your school's location determines which center receives your I-765 application. Most applicants don't know which center has their case until they receive their receipt notice (Form I-797).
The four centers that process OPT are:
USCIS occasionally transfers cases between centers to balance workloads. A transfer does not restart processing time, but can cause a brief delay while the file moves.
| Service Center | Non-PP (approx.) | Premium Processing | Known For |
|---|---|---|---|
| Nebraska (NBC) | 60–100 days | ~30 business days | High volume, consistent |
| Texas (TSC) | 60–100 days | ~30 business days | High volume, occasional spikes |
| Potomac (PSC) | 30–70 days | ~30 business days | Often fastest for non-PP |
| Vermont (VSC) | 45–90 days | ~30 business days | Moderate volume |
All times are community estimates based on OPT Tracker data and vary significantly by semester and application volume. Check OPT Tracker's live data for current trends.
The Nebraska Service Center processes one of the largest volumes of OPT applications nationwide. It serves students from many large state universities and research institutions in the Midwest. Because of high volume, processing times can stretch during peak spring and fall filing seasons.
Nebraska is known for relatively consistent processing — cases rarely sit without movement for extended periods, but the baseline timeline is longer than Potomac. Biometrics appointments are common here for first-time USCIS filers.
Tips for Nebraska applicants: File as early as possible (90 days before program end date). Check the USCIS case status API regularly — Nebraska cases often update 2–3 days before the official website reflects changes.
Texas processes a very high volume of OPT applications, particularly from universities in Texas, Florida, and other southern states. The center is known for occasional processing spikes — periods where times stretch significantly beyond average — especially during peak semesters.
STEM OPT extension applicants at Texas have reported particularly consistent Premium Processing outcomes, with most cases decided within 25–30 business days of filing Form I-907.
Tips for Texas applicants: If your timeline is tight, Premium Processing is worth considering. Texas has seen more transfer activity than other centers in recent years — don't be alarmed if your case moves to another center.
Potomac consistently reports the shortest non-PP processing times among the four OPT service centers, based on OPT Tracker community data. Many PSC applicants see approval within 30–50 days without Premium Processing — shorter than the national average by several weeks.
PSC serves universities in Maryland, Virginia, Washington D.C., and parts of Pennsylvania. The lower case volume compared to Nebraska and Texas likely contributes to faster turnaround.
Tips for Potomac applicants: You're in a favorable position. Even without Premium Processing, timelines here are often short enough to file 60–70 days before your start date — though 90 days remains the safest approach.
Vermont handles OPT applications from universities in New England — Massachusetts, Connecticut, New York, and neighboring states. It sees lower application volume than Nebraska or Texas, but processing times can vary more unpredictably by semester.
Vermont has historically been a strong center for STEM OPT extensions, with many cases approved quickly in the 45–60 day range during non-peak periods. Spring filing season tends to cause the most delays here.
Tips for Vermont applicants: Vermont processing tends to be more predictable than Texas. If you're applying during the spring rush (February–April), adding a buffer of 15–20 extra days to your timeline estimates is prudent.
USCIS occasionally transfers OPT cases between service centers to balance workloads. This typically happens when one center is experiencing a backlog. A transfer:
my.uscis.gov/account/case-service/api/cases/YOUR_CASE_NUMBER. When the updatedAtTimestamp changes, your case has moved.
Premium Processing guarantees a decision within 30 business days (roughly 6 calendar weeks). The fee is approximately $2,805 as of 2025. It's available for STEM OPT extensions but generally not available for initial OPT.
Premium Processing is worth considering if:
The 30-business-day clock starts from when USCIS receives your I-907 — not your I-765. If you're upgrading a pending case to PP, it starts from when PP is accepted.
Filter OPT Tracker by service center, OPT type, and premium processing status to see current timelines from real applicants who have been through the same process.
Nebraska cases → · Texas cases → · Potomac cases → · Vermont cases →
All processing time estimates are community-sourced approximations and may not reflect your individual experience. This page does not constitute legal advice.