Updated September 2026
Best Owner-Operator Companies in Diamond Bar, California (September 2026)
There are 231 owner-operator carriers currently posting jobs in Diamond Bar, California. The ranking below reflects active jobs as of September 2026, not historical pay surveys. WESTERN MOUNTAIN TRANSPORT INC leads with an average gross weekly revenue of $8,500. Rickman Transport, LLC follows at $9,250/week gross. California freight is dominated by the Port of LA / Long Beach complex, Central Valley agriculture, and the Inland Empire warehouse cluster along I-10 and I-15.
What changed in September 2026
We just started tracking monthly changes for this view. Check back next month to see how rankings have shifted.
Where Diamond Bar, California differs from the California baseline
| Diamond Bar, California | California top 50 | Delta | |
|---|---|---|---|
| Average weekly pay | $7,672 | $6,574 | +17% |
| Riders-allowed policies | 82% | 90% | -8 pt |
Source: Lanefinder index, September 2026
Diamond Bar, California's biggest divergence from California is on average weekly pay, 17% above the state baseline.
Diamond Bar, California's top owner-operator carriers right now
The top of the list is WESTERN MOUNTAIN TRANSPORT INC at $8,500/week. A few names below the top earn more on a weekly-pay basis but rank lower on the composite.
#1WESTERN MOUNTAIN TRANSPORT INC — $8,500/wk
WESTERN MOUNTAIN TRANSPORT INC leads the Diamond Bar, California market on combined gross revenue and ranking score this month. WESTERN MOUNTAIN TRANSPORT INC sits in the 92nd percentile for gross weekly revenue among Diamond Bar, California carriers. On driver fitness, the carrier ranks in the 93rd percentile per FMCSA SAFER data. Lanefinder's application data flags WESTERN MOUNTAIN TRANSPORT INC as a responsive employer.
#2Rickman Transport, LLC — $9,250/wk
Rickman Transport, LLC pays above the 91st percentile on gross weekly revenue for the Diamond Bar, California market. Strongest FMCSA dimension is unsafe-driving avoidance — 91st percentile.
Rickman Transport, LLC offers the highest sign-on bonus among Diamond Bar, California's top 10 — $6,000.
#3Always Franklin LLC — $8,250/wk
Always Franklin LLC's gross weekly revenue ranks in the 91st percentile across Diamond Bar, California. Always Franklin LLC ranks in the 94th percentile for unsafe-driving avoidance on FMCSA SAFER data.
Also in the top 10: #4 Ali Star Inc at $10,000/wk, #5 GNS TRUCKING INC at $9,000/wk, #6 BLUE LIGHTNING LOGISTICS at $7,000/wk, #7 KILO METER LOGISTIC INC at $7,500/wk, #8 TP TRUCKING at $8,500/wk, #9 ZAIETS TRANSPORTATION LLC at $8,675/wk, #10 ARCHER HOLDING GROUP at $8,000/wk.
How drivers spend their time on the road in Diamond Bar, California
Of active CDL postings in Diamond Bar, California this month, 12% are regional and 83% are OTR (long-haul). Local and semi-local routes account for the remaining 5%.
Across Diamond Bar, California CDL postings: 2% with guaranteed pay, 40% dedicated, 83% take-truck-home, 67% pet-friendly, 66% riders-allowed.
Driving CDL in California
California is one of the toughest states to drive CDL in the country, and one of the most lucrative for the right setup. CARB clean-truck enforcement is the most aggressive in the US, so newer equipment is effectively required for fleet work — if you're owner-op, plan the truck purchase around it. Drayage out of LA / Long Beach and warehouse-rotation work in the Inland Empire pay near the top of the national scale, but cost of living is brutal. The mountain passes (Cajon, Grapevine, Donner) add real winter complexity that most other Southwest lanes don't. Drivers with serious mountain experience earn it back.
Related guides
- Best trucking companies in Diamond Bar, California
- CDL driver salary in Diamond Bar, California
- Best owner-operator companies in California
How we compile these rankings
The composite score is 30% compensation, 25% FMCSA safety, 25% benefits, and 20% operational performance. Pay percentiles are computed against carriers currently hiring in each market; FMCSA percentiles come from SAFER and weight unsafe-driving and hours-of-service violations 2× heavier than the other three dimensions. Updated September 2026.