Department of State NAICS 541990 and PSC R499 contractors

All Other Professional, Scientific, and Technical Services. SUPPORT- PROFESSIONAL: OTHER. Cross-code overlap under Department of State.

Department of State · NAICS 541990 · PSC R499

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$5,401,458,362

State overlap

Top recipients

Visible recipients in the Department of State overlap of NAICS 541990 and PSC R499

Caci Intelligence Solutions, LLC

Herndon, VA

Herndon, VA | 5 awards | Top agency Department of Defense | NAICS 541990

$315,500,795

Guidehouse LLP

Mc Lean, VA

Mc Lean, VA | 134 awards | Top agency Department of State | NAICS 541611

$1,435,589,451

Siemens Government Technologies INC

Arlington, VA

Arlington, VA | 227 awards | Top agency Department of Defense | NAICS 541512

$660,478,780

Counterpart International, Inc.

Washington, DC

Washington, DC | 5 awards | Top agency Agency for International Development | NAICS 541990

$19,113,494

Akima Data Management LLC

Herndon, VA

Herndon, VA | 138 awards | Top agency Department of Defense | NAICS 541519

$97,030,632

Cherokee Nation System Solutions LLC

Tulsa, OK

Tulsa, OK | 511 awards | Top agency Department of State | NAICS 561210

$118,907,847

Muscogee Nation Business Enterprise

Okmulgee, OK

Okmulgee, OK | 20 awards | Top agency Department of Defense | NAICS 541519

$40,484,641

Koniag Management Solutions LLC

Anchorage, AK

Anchorage, AK | 184 awards | Top agency Department of Defense | NAICS 541512

$119,868,094

Goldbelt C6, LLC

Chesapeake, VA

Chesapeake, VA | 349 awards | Top agency Department of Health and Human Services | NAICS 541990

$284,559,309

Social & Scientific Systems, Inc.

Silver Spring, MD

Silver Spring, MD | 84 awards | Top agency Department of Health and Human Services | NAICS 541712

$216,511,106

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