Understanding USCIS Service Center Performance Data
USCIS adjudicates over 9 million applications annually across five major service centers — Nebraska (NSC), Texas (TSC), California (CSC), Vermont (VSC), and Potomac (PSC). Each center processes different visa categories, and their adjudication patterns vary significantly. For petitioners with jurisdiction choice (or when building the strongest possible case), understanding these patterns is a material strategic advantage.
Which USCIS Service Center Has the Best H-1B Approval Rate?
Nebraska Service Center (NSC) consistently outperforms on H-1B petitions — posting 90.5–91.0% approval rates in FY2024–FY2025, compared to 86–88% at Texas, California, and Vermont. Nebraska also has the lowest H-1B RFE rate (~22.6–22.7%) and fastest average processing time (~105–108 days standard). These differences are not trivial: a 5-percentage-point gap in approval rate translates to tens of thousands of additional petitions approved annually.
Service Center Assignment Rules
You generally cannot choose your service center — USCIS assigns filings based on the petitioner's or beneficiary's location. However, large employers with operations in multiple states may have flexibility, and understanding which center handles your petition helps calibrate documentation strategy. California Service Center historically reviews specialty occupation criteria more stringently — petitioners there should build a more comprehensive employer evidence package.
| Service Center | Abbrev | Primary Cases | H-1B Approval (FY2025) | H-1B RFE Rate |
|---|---|---|---|---|
| Nebraska | NSC | H-1B, O-1, L-1, EB-2 NIW, F-1 OPT | 91.0% | 22.6% |
| Texas | TSC | H-1B, L-1, E-2, TN, L-1B | 87.5% | 30.0% |
| California | CSC | H-1B, O-1, certain EB | 86.2% | 32.5% |
| Vermont | VSC | H-1B, TN, certain O-1 | 88.4% | 28.0% |
| Potomac | PSC | EB-5, certain EB-1, H-4 EAD | — | — |
Sources: USCIS H-1B Data Hub, USCIS Annual Report FY2025, USCIS Adjudication Statistics. Data reflects initial petitions.
Why RFE Rates Matter More Than Denial Rates
A denial is final. But an RFE (Request for Evidence) is an opportunity to overcome — at a cost. RFEs add 3–6 months to processing time, require significant legal work ($3,000–$8,000+ in attorney fees), and result in denial if not adequately addressed. For EB-2 NIW petitions, where RFE rates exceed 49–52%, nearly every other petition triggers additional scrutiny. This makes front-loading evidence — especially under NSC's slightly lower RFE bar — a legitimate filing strategy.
Seasonal Patterns in USCIS Adjudication
USCIS processing times and approval rates exhibit seasonal variation. H-1B petitions filed in Q4 (July–September) of the fiscal year often encounter slower processing as service centers balance volume against fiscal year-end staffing changes. Q1 (October–December) filings historically see faster initial processing. Cap-exempt H-1B filings (universities, nonprofits, research institutions) do not follow the April 1 cap cycle and can be filed anytime with fewer seasonal congestion effects.