Top 100 South Carolina Trucking Fleets by Power Units (2026)

Nightly aggregation of the FMCSA census puts South Carolina at 25,260 active motor carriers running roughly 150,706 power units combined, and about 53% of those carriers are single-truck owner-operators. Average active fleet size works out to 7.0 trucks.

478 new SC carrier registrations appeared in the last 90 days — and 464 registrations carry an FMCSA prior-revocation link, the raw material of chameleon re-registrations.

SUNBELT RENTALS INC out of FORT MILL tops the SC ranking with 6234 power units on its latest MCS-150. Its complete vetting workup — risk flags, score breakdown, insurance filings, and record timeline — is at https://mclookup.com/carrier/500579.

The list orders every carrier headquartered in SC by self-reported power units, filtered for plausibility (a driver-to-truck ratio between 0.3 and 5.0 screens out data-entry junk like thousand-truck fleets with zero drivers). Showing the top 100 of 4,468 qualifying carriers; every row links to that carrier's full public record.

Yes — this page only surfaces the largest fleets. Any of the 4,468 registered SC carriers can be pulled up by typing its USDOT or MC number into the search bar, which returns the same risk-flag screening, score breakdown, and month-over-month record history.