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Department of the Interior NAICS 541990 and PSC R421 contractors

All Other Professional, Scientific, and Technical Services. TECHNICAL ASSISTANCE. Use this deeper buyer cross-code page to see which visible contractors sit in the overlap between these two lanes under Department of the Interior.

Department of the Interior · NAICS 541990 · PSC R421
Last updated: April 8, 2026

Visible recipients

2

Mapped obligations

$836,375,167

State overlap

2

Top recipients

Visible recipients in the Department of the Interior overlap of NAICS 541990 and PSC R421