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USCIS · Systems and processing · Request IRW-058

List of FIRST office codes

This request asks for the full list of offices kept in FIRST (the system USCIS uses to track records requests), both current and past. For each office it asks for the code, identifier, name, description, whether it is active, and the start and end dates. CSV format is preferred.

Why it matters
Office codes may decide which cases are counted in reported figures, so the list helps the public read those figures.
ProcessingExtension invoked 27 business days since filing (39 calendar days)

Figures as of Oct 17, 2026. Check after Nov 16, 2026: if you are reading later than that, these figures may be out of date.

These figures are more than 30 days old. They may not reflect what has happened since Oct 17, 2026.

Extension invoked
USCIS told the requester it would invoke the 10-working-day "unusual circumstances" extension the law allows (5 U.S.C. 552(a)(6)(B)). What an extension means

Timeline

  1. FiledSep 8, 2026
  2. Acknowledged by USCISSep 15, 2026
  3. Final responseNot yet received

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Template T-50
A complete list or reference table of all offices maintained in the FOIA Immigration Records System (FIRST), both current and historical, showing for each office the code, office identifier, name, description, active status, effective dates, and deactivated dates.
How to file it