Which GSA SINs have the most published labor rates?
SIN 54151S carries the most published GSA Schedule labor rates, 124,528 from 3,664 vendors at a median of $130 per hour; the five busiest SINs account for 54.0% of all 376,283 published rates.
Source: The GSA Labor Rate Lookup (full CALC+ export), BidSparq
Data as of: October 19, 2026 (refreshed weekly)
Sample: 376,283 published rates across every SIN in the CALC+ export, as of 2026-10-19
License: free to cite with attribution to BidSparq
Verify this yourself: GSA CALC+ (the Contract-Awarded Labor Category tool that publishes every GSA Schedule labor rate).
Essential statistics
- Top three SINs: 54151S (124,528 rates, median $130); 541611 (30,004 rates, median $129); 518210C (17,651 rates, median $153).
- Highest median among the top 15: 518210C at $153; lowest: 561320 at $51.
- Vendors with published rates on the busiest SIN: 3,664, the deepest competitive set on the Schedule.
Top 15 SINs by published labor rates
| Rank | SIN | Published rates | Vendors | Median rate |
|---|---|---|---|---|
| 1 | 54151S | 124,528 | 3,664 | $130 |
| 2 | 541611 | 30,004 | 1,650 | $129 |
| 3 | 518210C | 17,651 | 864 | $153 |
| 4 | 54151HEAL | 15,567 | 509 | $128 |
| 5 | 54151HACS | 15,484 | 583 | $143 |
| 6 | 561210FAC | 7,582 | 335 | $82 |
| 7 | 541330ENG | 7,316 | 372 | $127 |
| 8 | 561320 | 4,350 | 80 | $51 |
| 9 | 611430 | 3,805 | 264 | $113 |
| 10 | 541620 | 2,937 | 164 | $105 |
| 11 | 541330ENG,541380,541420,541715 | 2,453 | 70 | $127 |
| 12 | 541611,611430 | 2,266 | 118 | $129 |
| 13 | 541715 | 1,672 | 86 | $122 |
| 14 | 512110 | 1,668 | 109 | $94 |
| 15 | 561422 | 1,560 | 49 | $104 |
What this means
A Special Item Number groups Schedule offerings by service type; IT professional services (54151S) dominates the published rate corpus. More published rates on a SIN means more price transparency for buyers and more competitors for sellers.
Each SIN has its own rate card page on BidSparq with vendor-level percentiles, linked from the contract vehicles hub.
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