NAICS 561110 and PSC R499 contractors

Office Administrative Services. SUPPORT- PROFESSIONAL: OTHER. Cross-code contractor overlap.

NAICS 561110 + PSC R499

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$5,237,643,459

State overlap

Top recipients

Visible recipients in the NAICS 561110 and PSC R499 overlap

Alutiiq International Solutions, LLC

Anchorage, AK

Anchorage, AK | 20 awards | Top agency Department of Defense | NAICS 236220

$319,205,174

Lmi Consulting, LLC

Tysons Corner, VA

Tysons Corner, VA | 256 awards | Top agency Department of Defense | NAICS 541330

$1,021,800,711

Serco Management Services, Inc.

Reston, VA

Reston, VA | 5 awards | Top agency Department of Transportation | NAICS 488111

$16,087,158

Catapult Consultants LLC

Fredericksburg, VA

Fredericksburg, VA | 5 awards | Top agency Department of Defense | NAICS 541611

$11,542,026

Brillient Corporation

Reston, VA

Reston, VA | 55 awards | Top agency Department of Homeland Security | NAICS 561210

$323,416,504

Navarro Research And Engineering, Inc.

Oak Ridge, TN

Oak Ridge, TN | 102 awards | Top agency Department of Energy | NAICS 562910

$119,064,029

Cape Fox Government Services, LLC

Daleville, AL

Daleville, AL | 5 awards | Top agency Department of Defense | NAICS 611692

$2,875,801

The Bizzell Group LLC

Hyattsville, MD

Hyattsville, MD | 126 awards | Top agency Department of Health and Human Services | NAICS 541611

$150,022,758

S & K Aerospace, LLC

Saint Ignatius, MT

Saint Ignatius, MT | 415 awards | Top agency Department of Defense | NAICS 541614

$2,132,103,260

Sierra7, Inc.

Mclean, VA

Mclean, VA | 141 awards | Top agency Department of Veterans Affairs | NAICS 541512

$66,868,578

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