Top NAICS Codes for Department of the Interior FY2025

Industries ranked by federal contract obligations awarded by Department of the Interior during fiscal year 2025.

Quick answer

NAICS 237990, OTHER HEAVY AND CIVIL ENGINEERING CONSTRUCTION, leads Department of the Interior in FY2025 with $109,339,009 in ingested obligations.

Market Snapshot

Ranked contractors68
Top obligations$109,339,009
RankNAICSNAICS industryObligationsAwards
1237990OTHER HEAVY AND CIVIL ENGINEERING CONSTRUCTION$109,339,0094
2236220COMMERCIAL AND INSTITUTIONAL BUILDING CONSTRUCTION$38,030,9047
3237110WATER AND SEWER LINE AND RELATED STRUCTURES CONSTRUCTION$26,839,6241
4221320SEWAGE TREATMENT FACILITIES$11,093,6602
5115310SUPPORT ACTIVITIES FOR FORESTRY$10,787,066123
6511210SOFTWARE PUBLISHERS$7,265,9642
7334220RADIO AND TELEVISION BROADCASTING AND WIRELESS COMMUNICATIONS EQUIPMENT MANUFACTURING$6,629,33616
8541519OTHER COMPUTER RELATED SERVICES$5,372,9972
9518210DATA PROCESSING, HOSTING, AND RELATED SERVICES$5,085,0602
10481211NONSCHEDULED CHARTERED PASSENGER AIR TRANSPORTATION$4,156,7505
11237310HIGHWAY, STREET, AND BRIDGE CONSTRUCTION$3,134,4864
12541330ENGINEERING SERVICES$2,432,2726
13541512COMPUTER SYSTEMS DESIGN SERVICES$1,500,9452
14541511CUSTOM COMPUTER PROGRAMMING SERVICES$1,426,3691
15336413OTHER AIRCRAFT PARTS AND AUXILIARY EQUIPMENT MANUFACTURING$1,227,16712
16611710EDUCATIONAL SUPPORT SERVICES$979,6622
17722310FOOD SERVICE CONTRACTORS$943,3843
18315210CUT AND SEW APPAREL CONTRACTORS$662,2801
19561621SECURITY SYSTEMS SERVICES (EXCEPT LOCKSMITHS)$470,8311
20337212CUSTOM ARCHITECTURAL WOODWORK AND MILLWORK MANUFACTURING$412,7812
21541620ENVIRONMENTAL CONSULTING SERVICES$394,9044
22333120CONSTRUCTION MACHINERY MANUFACTURING$389,9501
23541310ARCHITECTURAL SERVICES$380,0342
24488190OTHER SUPPORT ACTIVITIES FOR AIR TRANSPORTATION$377,4372
25611430PROFESSIONAL AND MANAGEMENT DEVELOPMENT TRAINING$340,2581
26221122ELECTRIC POWER DISTRIBUTION$328,4101
27334512AUTOMATIC ENVIRONMENTAL CONTROL MANUFACTURING FOR RESIDENTIAL, COMMERCIAL, AND APPLIANCE USE$321,8851
28561790OTHER SERVICES TO BUILDINGS AND DWELLINGS$317,7101
29238140MASONRY CONTRACTORS$314,4381
30238910SITE PREPARATION CONTRACTORS$302,9553
31561612SECURITY GUARDS AND PATROL SERVICES$287,1291
32339950SIGN MANUFACTURING$272,9411
33212319OTHER CRUSHED AND BROKEN STONE MINING AND QUARRYING$266,9671
34513210SOFTWARE PUBLISHERS$248,0001
35334513INSTRUMENTS AND RELATED PRODUCTS MANUFACTURING FOR MEASURING, DISPLAYING, AND CONTROLLING INDUSTRIAL PROCESS VARIABLES$247,5902
36115210SUPPORT ACTIVITIES FOR ANIMAL PRODUCTION$170,2791
37811212COMPUTER AND OFFICE MACHINE REPAIR AND MAINTENANCE$141,9251
38562910REMEDIATION SERVICES$122,1412
39561710EXTERMINATING AND PEST CONTROL SERVICES$120,0001
40334111ELECTRONIC COMPUTER MANUFACTURING$106,4553
41332999ALL OTHER MISCELLANEOUS FABRICATED METAL PRODUCT MANUFACTURING$100,2821
42532120TRUCK, UTILITY TRAILER, AND RV (RECREATIONAL VEHICLE) RENTAL AND LEASING$96,9991
43812930PARKING LOTS AND GARAGES$96,4801
44541211OFFICES OF CERTIFIED PUBLIC ACCOUNTANTS$81,7181
45561720JANITORIAL SERVICES$79,0601
46212321CONSTRUCTION SAND AND GRAVEL MINING$73,8091
47325120INDUSTRIAL GAS MANUFACTURING$68,5941
48561730LANDSCAPING SERVICES$56,9202
49324110PETROLEUM REFINERIES$52,2112
50517121TELECOMMUNICATIONS RESELLERS$47,7361
51922120POLICE PROTECTION$45,0001
52517111WIRED TELECOMMUNICATIONS CARRIERS$37,4003
53336214TRAVEL TRAILER AND CAMPER MANUFACTURING$31,1151
54333241FOOD PRODUCT MACHINERY MANUFACTURING$29,3321
55531190LESSORS OF OTHER REAL ESTATE PROPERTY$24,9601
56519210LIBRARIES AND ARCHIVES$24,5001
57311119OTHER ANIMAL FOOD MANUFACTURING$24,3221
58115112SOIL PREPARATION, PLANTING, AND CULTIVATING$23,8051
59541513COMPUTER FACILITIES MANAGEMENT SERVICES$20,6231
60541360GEOPHYSICAL SURVEYING AND MAPPING SERVICES$18,6951
61561990ALL OTHER SUPPORT SERVICES$18,4501
62337211WOOD OFFICE FURNITURE MANUFACTURING$16,3591
63562112HAZARDOUS WASTE COLLECTION$11,9871
64561499ALL OTHER BUSINESS SUPPORT SERVICES$10,0991
65562111SOLID WASTE COLLECTION$5,5661
66532310GENERAL RENTAL CENTERS$3,7851
67811310COMMERCIAL AND INDUSTRIAL MACHINERY AND EQUIPMENT (EXCEPT AUTOMOTIVE AND ELECTRONIC) REPAIR AND MAINTENANCE$1,8841
68541380TESTING LABORATORIES AND SERVICES$1,0401

Source: USAspending.gov. Last updated from ingested federal spending data: May 7, 2026.