Department of State NAICS 541990 and PSC B550 contractors

All Other Professional, Scientific, and Technical Services. SPECIAL STUDIES/ANALYSIS- ORGANIZATION/ADMINISTRATIVE/PERSONNEL. Use this deeper buyer cross-code page to see which visible contractors sit in the overlap between these two lanes under Department of State.

Department of State · NAICS 541990 · PSC B550

Last updated: April 8, 2026

Visible recipients

Mapped obligations

$569,353,567

State overlap

Top recipients

Visible recipients in the Department of State overlap of NAICS 541990 and PSC B550

Guidehouse LLP

Mc Lean, VA

Guidehouse LLP is a federal category business profile based in Mc Lean, VA. The current public data layer shows $140,750,981 in visible federal obligations across 132 awards or transactions. Department of State appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541611 (Administrative Management and General Management Consulting Services). The profile also shows meaningful product and service activity in PSC R499.

$569,353,567