California Service Center

Location: Laguna Niguel, California

The California Service Center (CSC) processes a variety of immigration petitions including many H-1B petitions, O-1 extraordinary ability visas, and other employment-based and humanitarian cases.

Receipt Number Prefixes

Cases processed at the California Service Center use the following receipt number prefixes:

• WAC — e.g., WAC0912345678

Common Forms Processed

The California Service Center regularly processes the following USCIS form types:

• I-129 — Petition for Nonimmigrant Worker
• I-140 — Immigrant Petition for Alien Workers
• I-765 — Application for Employment Authorization
• I-131 — Application for Travel Document (Advance Parole)
• I-539 — Application to Extend/Change Nonimmigrant Status

Key Information

• Receipt numbers from CSC start with "WAC"
• Handles many H-1B and O-1 visa petitions
• Also processes humanitarian cases and asylum-related applications
• Premium processing available for eligible petitions

Track Your Case

Have a receipt number starting with WAC? Look up your case status instantly.