What the Department of the Interior buys
The Department of the Interior obligated $6.6 billion on contracts in fiscal year 2025. Its largest category was Other Heavy and Civil Engineering Construction ($820.6 million).
What it buys
| Industry (NAICS) | FY2025 obligations | Share |
|---|---|---|
| Other Heavy and Civil Engineering Construction (237990) | $820.6 million | 12.5% |
| Commercial and Institutional Building Construction (236220) | $740.3 million | 11.3% |
| Computer Systems Design Services (541512) | $550.5 million | 8.4% |
| Other Computer Related Services (541519) | $459.3 million | 7.0% |
| Water and Sewer Line and Related Structures Construction (237110) | $447.6 million | 6.8% |
| Support Activities for Forestry (115310) | $329.5 million | 5.0% |
| Administrative Management and General Management Consulting Services (541611) | $283.0 million | 4.3% |
| Custom Computer Programming Services (541511) | $221.3 million | 3.4% |
| Engineering Services (541330) | $203.4 million | 3.1% |
| Offices of Lawyers (541110) | $147.9 million | 2.3% |
| Nonscheduled Chartered Passenger Air Transportation (481211) | $130.2 million | 2.0% |
| Geophysical Surveying and Mapping Services (541360) | $103.6 million | 1.6% |
| Environmental Consulting Services (541620) | $93.8 million | 1.4% |
| Professional and Management Development Training (611430) | $88.7 million | 1.4% |
| Highway, Street, and Bridge Construction (237310) | $86.7 million | 1.3% |
| Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (518210) | $80.0 million | 1.2% |
| All Other Miscellaneous Chemical Product and Preparation Manufacturing (325998) | $67.2 million | 1.0% |
| Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) (541715) | $58.5 million | 0.9% |
| Software Publishers (511210) | $58.5 million | 0.9% |
| All Other Professional, Scientific, and Technical Services (541990) | $57.9 million | 0.9% |
| Support Activities for Animal Production (115210) | $56.0 million | 0.9% |
| Other Scientific and Technical Consulting Services (541690) | $50.1 million | 0.8% |
| Wired Telecommunications Carriers (517110) | $45.7 million | 0.7% |
| Architectural Services (541310) | $45.0 million | 0.7% |
| Computer Facilities Management Services (541513) | $41.4 million | 0.6% |
Who wins
| Contractor | FY2025 obligations | Share |
|---|---|---|
| General Dynamics Information Technology, Inc. | $298.6 million | 4.5% |
| Nw Construction, INC | $225.9 million | 3.4% |
| Kiewit Infrastructure West Co. | $217.2 million | 3.3% |
| Acacia Center for Justice | $147.9 million | 2.3% |
| Jacobs Project Management Co. | $132.6 million | 2.0% |
| Ames Federal Contracting Group LLC | $112.1 million | 1.7% |
| Tepa Ec, LLC | $109.4 million | 1.7% |
| Cdm Constructors INC | $88.3 million | 1.3% |
| Deep Mile Networks LLC | $87.9 million | 1.3% |
| Guidehouse Inc. | $77.5 million | 1.2% |
| Perimeter Solutions LP | $66.7 million | 1.0% |
| Booz Allen Hamilton INC | $53.9 million | 0.8% |
| Icf Incorporated, L.l.c. | $51.1 million | 0.8% |
| Magellan Federal, Inc. | $49.7 million | 0.8% |
| Accenture Federal Services LLC | $49.0 million | 0.7% |
| Record Steel and Construction, Inc. | $45.5 million | 0.7% |
| Stronghold Engineering INC | $43.6 million | 0.7% |
| Perini Management Services, Inc. | $43.3 million | 0.7% |
| Lumen Technologies Government Solutions, Inc. | $37.7 million | 0.6% |
| Planet Technologies, Inc. | $35.7 million | 0.5% |
| Kbr Wyle Services, LLC | $34.9 million | 0.5% |
| Medvolt - Roundhouse JV | $34.3 million | 0.5% |
| Dell Federal Systems L.p | $30.1 million | 0.5% |
| Peraton Inc. | $29.5 million | 0.4% |
| Kadiak LLC | $28.1 million | 0.4% |
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Source and coverage
Source: USAspending.gov, the U.S. Treasury's public record of federal spending, retrieved 2026-11-01. Figures are contract obligations (award types A, B, C and D) for federal fiscal year 2025, October 2024 to September 2025. Amounts cover the whole agency. This is federal money only. State, city and town contracts are not included. Obligations can be negative when earlier amounts are withdrawn, some classified work is not reported, and contractors that may be individuals are left out of the name lists, so a list is not a complete ranking of everyone paid. Pushbuild is not affiliated with any agency or company listed.