The federal Motor Carrier Census File is the source of truth for every U.S. carrier. Here's what's in it — and how to get it without the cleanup marathon.
The FMCSA Motor Carrier Census File (the dataset many know by its data.transportation.gov ID, az4n-8mr2) is the federal government's master record of every registered motor carrier in the United States.
DOT numbers, legal and DBA names, addresses, fleet sizes, operation classifications, and cargo authorities — over 1.6 million active carrier records, plus millions of inactive ones you'll need to filter out.
It ships as a massive raw export with cryptic column codes, mixed active/inactive records, and patchy contact fields. Plan on hours of cleanup before it's usable for outreach.
We compile the census file into a ready-to-use CSV — active carriers only, emails and phones included, segmented by state and cargo type. One-time $99, instant download.
Want the full comparison of free vs. paid routes? Read our FMCSA data download guide or see the 2026 industry statistics built from this data.
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