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City Statistics

Active Trucking Companies
in Rock Springs, WY

161 active carriers, brokers & freight companies. Located in Sweetwater County.

Rock Springs, WY FMCSA data • updated weekly 4.46% of Wyoming
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161
Active Trucking Companies
4.46% of all active carriers in Wyoming
23
New FMCSA Registrations (24 Mo.)
Avg 1.0 new companies per month (+62.5% YoY)
2
Median Fleet Size
Power units at the midpoint of all reporting companies
47.4%
Owner-Operator Rate
vs. 52.5% statewide in Wyoming
New FMCSA Registrations
134 Aug '18Aug '20Aug '22Aug '24Jul '26
65
Total
0.7
Avg / month
4
Best: Aug 2022
0
Lowest: Aug 2018
Company Size Distribution
156
Reporting
Fleets
1 Power Unit 74 47.4%
2–5 Units 57 36.5%
6–20 Units 15 9.6%
21–100 Units 10 6.4%
101+ Units 0 0.0%

Based on total power units reported to FMCSA. Median: 2 unit(s).

Company Age Distribution
13.9
Avg age
(years)
0–2 Years 24 15.1%
3–5 Years 28 17.6%
6–10 Years 29 18.2%
11–20 Years 39 24.5%
20+ Years 39 24.5%

Based on FMCSA registration date. Average age: 13.9 years.

Company Authority Types
Carrier 158 98.1%
Shipper 10 6.2%
Broker 5 3.1%
Cargo Tank 1 0.6%
Freight Forwarder 1 0.6%

A company may hold multiple authority types simultaneously.

Top 10 Cargo Types
# Cargo Type Companies % of City
1 General Freight 92 57.1%
2 Oilfield Equipment 57 35.4%
3 Machinery & Large Objects 52 32.3%
4 Construction 44 27.3%
5 Building Materials 38 23.6%
6 Other 37 23.0%
7 Motor Vehicles 31 19.3%
8 Metal: Sheets & Coils 27 16.8%
9 Driveaway/Towaway 23 14.3%
10 Grain, Feed & Hay 22 13.7%
Largest Fleets in Rock Springs
# Company Fleet
1 JOHN BUNNING TRANSFER COMPANY INC 82
2 MOUNTAIN LINE INC 67
3 TM NATIONS LOGISTICS LLC 67
4 TM NATIONS LOGISTICS LLC 67
5 GREENE'S ENERGY SERVICES INC 58
6 LEGEND SERVICES INC 37
7 J & R TRUCKING INC 36
8 WIRE BROTHERS INC 31
9 READY OILFIELD SERVICE INC 29
10 WESTERN WYOMING BEVERAGES 25

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Data source: U.S. Federal Motor Carrier Safety Administration (FMCSA) — active carrier registrations. Last updated: July 10, 2026. Active status reflects carriers with FMCSA status code "A" at the time of data collection.