Trucking Companies in Marble Rock, IA
Marble Rock, IA has 6 registered for-hire trucking companies as of June 2026, making it one of Iowa's largest carrier markets by operating authority count. This figure includes active, inactive, and revoked authorities tracked by the Federal Motor Carrier Safety Administration (FMCSA).
Source: FMCSA operating authority and compliance records. Truck Graph analysis. View methodology
Fleet size and equipment distribution
6 carriers broken down by power-unit count and operation type in Marble Rock, IA.
Fleet size distribution
By registered power-unit count. Source: FMCSA carrier census. View methodology
Operation type breakdown
Classification by carrier operation type and hazmat endorsement status. View methodology
About the Marble Rock, IA freight market
Marble Rock, IA is home to 6 registered for-hire motor carriers, of which 6 (100.0%) hold active operating authority as of June 2026. According to FMCSA records, the average fleet size among Marble Rock carriers is 1.3 power units, reflecting a market dominated by owner-operators and small fleets. The Marble Rock carrier population contributes to Iowa's broader freight economy, which the Bureau of Labor Statistics ranks among the nation's largest by trucking employment.
The fleet composition in Marble Rock shows 7 single-truck operators (116.7% of all carriers) alongside 0 carriers operating fleets of 101+ power units. Other operations represent the largest segment with 11 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 1 carriers received new operating authority in the past 6 months, while 1 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 Marble Rock 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 .
Authority age distribution
Years since initial FMCSA authority grant date. View methodology
Risk and compliance overview
Risk indicators and fleet composition across 6 Marble Rock carriers.
Fleet size vs carrier count
Carrier population by fleet tier. Source: FMCSA census data. View methodology
Equipment type share
Based on operation type classification and endorsements. View methodology
All Marble Rock carriers — complete directory
2 safe-to-tender carriers · 1 pages · Sorted by fleet size.
| # | Carrier | City | DOT # | Fleet | Auth. age | Type | Safety | Status |
|---|---|---|---|---|---|---|---|---|
| 01 | Tucker Brinkman Marble Rock, IA | MC110946 | 3160647 | 1 | 7 yr 10 mo | Dry van | 0 | Active |
| 02 | Joey Rex Marble Rock, IA | MC1550647 | 4077860 | 1 | 3 yr | Dry van | 0 | Active |
Truck Graph carrier directory. Data from FMCSA operating authority records. View methodology
Find Marble Rock carriers by equipment type
Browse specialized carriers operating in Marble Rock, IA by trailer and equipment classification.
Explore the Iowa carrier directory
Marble Rock is one of the top freight markets in Iowa. Browse the full Iowa trucking company directory to find carriers across all cities, or return to the national carrier index to compare states.
Nearby freight markets in Iowa
Marble Rock trucking questions
Answers verified against FMCSA records.
How many trucking companies are in Marble Rock, Iowa?
Marble Rock, IA has 6 registered for-hire motor carriers as of June 2026. Of these, 6 hold active operating authority from the FMCSA.
What is the average fleet size in Marble Rock?
The average fleet size among Marble Rock carriers is 1.3 power units. Approximately 7 carriers operate a single truck, while 0 operate fleets of 101+ units.
How many Marble Rock carriers have risk indicators?
Truck Graph identifies 0 active risk indicators among Marble Rock-based carriers. These indicators are derived from authority history patterns, insurance filing anomalies, and known chameleon carrier behaviors.
How do I verify a Marble Rock 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 Marble Rock?
Marble Rock'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 6 Marble Rock carriers are cross-referenced against multiple compliance databases.
For journalists and researchers
Truck Graph data is open and citable. For press inquiries, contact our editorial team.