Department of the Interior NAICS 541611 and PSC R408 contractors

Administrative Management and General Management Consulting Services. SUPPORT- PROFESSIONAL: PROGRAM MANAGEMENT/SUPPORT. Cross-code overlap under Department of the Interior.

Department of the Interior · NAICS 541611 · PSC R408

Last updated: April 19, 2026

Visible recipients

Mapped obligations

$17,917,134,170

State overlap

Top recipients

Visible recipients in the Department of the Interior overlap of NAICS 541611 and PSC R408

Michael Baker International, Inc.

Moon Township, PA

Moon Township, PA | 58 awards | Top agency Department of Defense | NAICS 541330

$74,566,359

Ardent Management Consulting, LLC

Vienna, VA

Vienna, VA | 82 awards | Top agency Department of Homeland Security | NAICS 541511

$34,788,438

Kimley-horn And Associates INC

Raleigh, NC

Raleigh, NC | 24 awards | Top agency Department of Transportation | NAICS 541330

$30,205,522

Netimpact Strategies INC

Herndon, VA

Herndon, VA | 45 awards | Top agency Department of Defense | NAICS 541519

$114,538,235

Interactive Government Holdings, Inc.

Springfield, VA

Springfield, VA | 32 awards | Top agency Department of Defense | NAICS 561110

$40,270,815

Spry Methods, Inc.

Mc Lean, VA

Mc Lean, VA | 47 awards | Top agency Department of Defense | NAICS 541512

$55,100,455

Aalis Management Consulting LLC

Woodbridge, VA

Woodbridge, VA | 29 awards | Top agency Department of the Interior | NAICS 541611

$24,950,853

Icf Incorporated

Fairfax, VA

Fairfax, VA | 5 awards | Top agency Department of Health and Human Services | NAICS 541611

$3,808,303,598

Koniag Advisory And Business Solutions, LLC

Anchorage, AK

Anchorage, AK | 31 awards | Top agency Department of State | NAICS 541611

$4,279,473

Zantech It Services, Inc.

Reston, VA

Reston, VA | 51 awards | Top agency Department of Homeland Security | NAICS 541611

$317,123,069

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