Updated September 2026
Best Trucking Companies in Diamond Bar, California (September 2026)
There are 260 W2 trucking 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 weekly pay of $1,600 and an average $5,000 sign-on bonus. Flexsteel Industries follows at $2,000/week. 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.
The trucking companies leading Diamond Bar, California this month
The top of the list is WESTERN MOUNTAIN TRANSPORT INC at $1,600/week. A few names below the top earn more on a weekly-pay basis but rank lower on the composite.
#1WESTERN MOUNTAIN TRANSPORT INC — $1,600/wk
WESTERN MOUNTAIN TRANSPORT INC tops the Diamond Bar, California ranking with the strongest composite score across pay, safety, benefits, and operational signals. WESTERN MOUNTAIN TRANSPORT INC ranks in the 93rd percentile for driver fitness on FMCSA SAFER data. The carrier tracks as a responsive employer on Lanefinder's data.
#2Flexsteel Industries — $2,000/wk
Flexsteel Industries pays above the 86th percentile on weekly pay for the Diamond Bar, California market. Top FMCSA dimension here is unsafe-driving avoidance, in the 84th percentile.
Flexsteel Industries leads Diamond Bar, California's top 10 on sign-on bonus, advertising $10,000 for new drivers.
#3JK MOVING & STORAGE INC — $2,200/wk
JK MOVING & STORAGE INC pays above the 90th percentile on weekly pay for the Diamond Bar, California market. JK MOVING & STORAGE INC's top FMCSA dimension is unsafe-driving avoidance, in the 93rd percentile.
Also in the top 10: #4 TP TRUCKING at $1,950/wk, #5 FRESHPOINT CENTRAL CALIFORNIA INC at $2,500/wk, #6 PRAIRIE FIELD SERVICES LLC at $1,750/wk, #7 G-DIAMOND TRANSPORT INC at $2,045/wk, #8 OAK HARBOR FREIGHT LINES INC at $1,750/wk, #9 ELBERTA LOGISTICS INTERNATIONAL LLC at $2,000/wk, #10 Sika Corporation at $1,750/wk.
Lane mix and benefits across Diamond Bar, California
Of active CDL postings in Diamond Bar, California this month, 16% are regional and 67% are OTR (long-haul). Local and semi-local routes account for the remaining 17%.
Guaranteed pay is on offer at 2% of Diamond Bar, California postings; dedicated routes at 31%; take-truck-home at 66%. Pet-friendly policies appear at 59% and riders-allowed at 57%.
Where Diamond Bar, California differs from the California baseline
| Diamond Bar, California | California top 50 | Delta | |
|---|---|---|---|
| Dedicated routes | 40% | 34% | +6 pt |
| Take-truck-home | 78% | 72% | +6 pt |
Source: Lanefinder index, September 2026
The largest gap is on dedicated routes: Diamond Bar, California sits 6 points above the California baseline.
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 owner-operator companies in Diamond Bar, California
- CDL driver salary in Diamond Bar, California
- Best trucking companies in California
How we compile these rankings
Composite-score formula: compensation × 0.30, FMCSA safety × 0.25, benefits × 0.25, operational performance × 0.20. Compensation is anchored on pay percentile and lifted by sign-on bonus tier and guaranteed-pay availability. Operational performance is built mostly from driver-application response data in Lanefinder's platform, with fleet-scale percentile contributing a smaller portion. Updated September 2026.