Which NAICS codes have the most open government bids right now?
As of 2026-10-19, NAICS 237310 (Highway, Street, and Bridge Construction) carries the most open bids in BidSparq's tracked sources with 5,769 solicitations, out of 47,070 open solicitations tagged across 1,188 NAICS codes.
Source: The NAICS Code Lookup, BidSparq
Data as of: October 19, 2026 (refreshed weekly)
Sample: 47,070 open solicitations tagged with a NAICS code in BidSparq's tracked sources, 2026-10-19
License: free to cite with attribution to BidSparq
Verify this yourself: U.S. Census Bureau NAICS (the official code list, titles and definitions); BidSparq's live solicitation directory (the open bids these counts are drawn from, browsable without an account).
Essential statistics
- Top three: 237310 Highway, Street, and Bridge Construction (5,769); 541330 Engineering Services (2,934); 237990 Other Heavy and Civil Engineering Construction (2,732).
- The 15 busiest codes hold 68.3% of all NAICS-tagged open bids; the long tail runs across 1,173 other codes.
- 1,188 of the 2,125 codes in the 2022 NAICS list have at least one open bid this week.
Top 15 NAICS codes by open bids
| Rank | NAICS | Industry | Open bids |
|---|---|---|---|
| 1 | 237310 | Highway, Street, and Bridge Construction | 5,769 |
| 2 | 541330 | Engineering Services | 2,934 |
| 3 | 237990 | Other Heavy and Civil Engineering Construction | 2,732 |
| 4 | 236220 | Commercial and Institutional Building Construction | 2,707 |
| 5 | 238990 | All Other Specialty Trade Contractors | 2,239 |
| 6 | 238210 | Electrical Contractors and Other Wiring Installation Contractors | 2,015 |
| 7 | 541512 | Computer Systems Design Services | 1,974 |
| 8 | 332999 | All Other Miscellaneous Fabricated Metal Product Manufacturing | 1,889 |
| 9 | 237110 | Water and Sewer Line and Related Structures Construction | 1,847 |
| 10 | 541310 | Architectural Services | 1,521 |
| 11 | 541690 | Other Scientific and Technical Consulting Services | 1,490 |
| 12 | 238220 | Plumbing, Heating, and Air-Conditioning Contractors | 1,380 |
| 13 | 332510 | Hardware Manufacturing | 1,340 |
| 14 | 541620 | Environmental Consulting Services | 1,245 |
| 15 | 541618 | Other Management Consulting Services | 1,074 |
What this means
These counts measure what BidSparq tracks across 23,000+ federal, state, local, education, and healthcare sources, tagged by the NAICS code on the solicitation or assigned by classification; they are not a census of every government bid in the country. The ranking refreshes weekly with the corpus.
A crowded code means more bids and, usually, more competitors. Pair the count with set-aside and recompete signals before choosing where to spend proposal hours.
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