Trucking Companies in Sulphur, OK

Sulphur, OK is home to 22 registered for-hire motor carriers, of which 22 (100.0%) hold active operating authority as of May 2026. According to FMCSA records, the average fleet size among Sulphur carriers is 5.4 power units, reflecting a market dominated by owner-operators and small fleets. The Sulphur carrier population contributes to Oklahoma's broader freight economy, which the Bureau of Labor Statistics ranks among the nation's largest by trucking employment.

The fleet composition in Sulphur shows 37 single-truck operators (168.2% of all carriers) alongside 0 carriers operating fleets of 101+ power units. Other operations represent the largest segment with 71 carriers. This distribution is consistent with FMCSA's national pattern where approximately 91% of registered carriers operate fewer than 6 power units (FMCSA Industry Snapshot, 2024).

Authority tenure data reveals 4 carriers received new operating authority in the past 6 months, while 24 carriers have maintained continuous authority for 20+ years. New entrants face elevated scrutiny under FMCSA's New Entrant Safety Assurance Program, which mandates an 18-month monitoring period including at least one safety audit. The presence of 0 carriers with prior revocations on record underscores the importance of verifying authority status before tendering freight — a carrier's historical compliance record is publicly available through the FMCSA SAFER System.

Truck Graph identifies 0 active risk indicators among Sulphur carriers (0.00% of the population), flagged through cross-referencing authority history, insurance filing patterns, and known chameleon carrier behaviors. The FMCSA defines chameleon carriers as entities that "successively obtain and relinquish operating authority to evade enforcement actions." Shippers and brokers should verify carrier authority, insurance coverage, and safety ratings before every load tender — Truck Graph's Risk Check tool provides instant verification against all available compliance data.

Sources: FMCSA.dot.gov, BLS Trucking Industry Data, FMCSA SAFER System. Data verified as of May 29, 2026 at 7:28 PM.

Authority age distribution

Years since initial FMCSA authority grant date. View methodology

How many trucking companies are in Sulphur, Oklahoma?

Sulphur, OK has 22 registered for-hire motor carriers as of May 2026. Of these, 22 hold active operating authority from the FMCSA.

What is the average fleet size in Sulphur?

The average fleet size among Sulphur carriers is 5.4 power units. Approximately 37 carriers operate a single truck, while 0 operate fleets of 101+ units.

How many Sulphur carriers have risk indicators?

Truck Graph identifies 0 active risk indicators among Sulphur-based carriers. These indicators are derived from authority history patterns, insurance filing anomalies, and known chameleon carrier behaviors.

How do I verify a Sulphur trucking company?

Use Truck Graph's DOT Lookup tool to instantly verify any carrier's authority status, insurance coverage, and safety record. You can also check the FMCSA SAFER System directly at safer.fmcsa.dot.gov.

What types of trucking companies operate in Sulphur?

Sulphur's carrier population includes other, dry van / mixed operations. The market serves general freight, specialized, and regional distribution needs.

Is Truck Graph data reliable?

Truck Graph compiles data from FMCSA authority records, insurance filings, inspection histories, and crash reports. Data refreshes continuously from verified federal sources. All 22 Sulphur carriers are cross-referenced against multiple compliance databases.