City Statistics

Active Trucking Companies
in Diamond Bar, CA

368 active carriers, brokers & freight companies. Located in Los Angeles County.

Diamond Bar, CA FMCSA data • updated weekly 0.14% of California

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368

Active Trucking Companies

0.14% of all active carriers in California

New FMCSA Registrations (24 Mo.)

Avg 1.9 new companies per month (+64.7% YoY)

Median Fleet Size

Power units at the midpoint of all reporting companies

73.6%

Owner-Operator Rate

vs. 77.5% statewide in California

New FMCSA Registrations

Total

1.8

Avg / month

Best: Apr 2026

Lowest: Apr 2023

Company Size Distribution

277

Reporting
Fleets

1 Power Unit 204 73.6%

2–5 Units 60 21.7%

6–20 Units 10 3.6%

21–100 Units 3 1.1%

101+ Units 0 0.0%

Based on total power units reported to FMCSA. Median: 1 unit(s).

Company Age Distribution

7.8

Avg age
(years)

0–2 Years 57 15.6%

3–5 Years 81 22.2%

6–10 Years 72 19.7%

11–20 Years 151 41.4%

20+ Years 4 1.1%

Based on FMCSA registration date. Average age: 7.8 years.

Company Authority Types

Carrier 332 90.2%

Broker 36 9.8%

Freight Forwarder 9 2.4%

Shipper 6 1.6%

Intermodal Equipment Provider 6 1.6%

A company may hold multiple authority types simultaneously.

Top 10 Cargo Types

#	Cargo Type	Companies	% of City
1	General Freight	227	61.7%
2	Other	147	39.9%
3	Intermodal Containers	48	13.0%
4	Fresh Produce	16	4.3%
5	Refrigerated Food	16	4.3%
6	Meat	16	4.3%
7	Household Goods	15	4.1%
8	Paper Products	14	3.8%
9	Building Materials	12	3.3%
10	Construction	12	3.3%

Largest Fleets in Diamond Bar

#	Company	Fleet
1	CTOUR CHARTER LLC	26
2	E&A SAFETY EXPRESS INC	24
3	CTOUR EXPRESS LLC	21
4	TRI-LINES EXPRESS INC	20
5	LITTLE FAT TRUCKING	13
6	UQI EXPRESS INC	13
7	U S DORCAS INC	9
8	GRANDNESS PACIFIC LOGISTICS INC	8
9	SPEAKERS TRANSPORTS CORP	8
10	GOLDEN HARVEST TRANSPORTATION INC	7

Data source: U.S. Federal Motor Carrier Safety Administration (FMCSA) — active carrier registrations. Last updated: October 14, 2026. Active status reflects carriers with FMCSA status code "A" at the time of data collection.

Active Trucking Companiesin Diamond Bar, CA

Browse all active trucking companies in Diamond Bar

Active Trucking Companies
in Diamond Bar, CA