FMCSA carriers by cargo carried
Passengers carriers in Iowa
- 840Active carriers
By county
- Polk County149
- Linn County87
- Scott County43
- Black Hawk County42
- Johnson County40
- Dubuque County32
- Woodbury County29
- Story County18
- Dallas County18
- Dickinson County18
- Pottawattamie County15
- Winneshiek County15
- Buchanan County14
- Wapello County13
- Cerro Gordo County13
- Des Moines County13
- Clinton County12
- Marion County9
- Warren County9
- Washington County9
- Carroll County9
- Chickasaw County9
- Delaware County7
- Fayette County7
- Jasper County7
- Jefferson County6
- Jones County6
- Plymouth County6
- Benton County6
- Clay County6
- Mahaska County5
- Marshall County5
- Muscatine County5
- Sac County5
- Boone County5
- Cass County5
- Clayton County5
- Crawford County5
- Floyd County5
- Hardin County5
- Iowa County5
- Pocahontas County4
- Union County4
- Appanoose County4
- Calhoun County4
- Davis County4
- Ida County4
- Lee County3
- Madison County3
- Montgomery County3
- Page County3
- Ringgold County3
- Webster County3
- Allamakee County3
- Bremer County3
- Buena Vista County3
- Cedar County3
- Clarke County3
- Hancock County3
- Henry County3
- Humboldt County3
- Jackson County3
Carriers
| Carrier | USDOT # | County | City | Power units | Drivers | Hazmat |
|---|---|---|---|---|---|---|
| TMC | 87409 | DES MOINES | 3,883 | 3,469 | Yes | |
| ALLIANT ENERGY | 751794 | DUBUQUE | 657 | 514 | Yes | |
| ALLIANT ENERGY | 166001 | DUBUQUE | 604 | 344 | Yes | |
| CORTEVA AGRISCIENCE LLC | 55726 | JOHNSTON | 344 | 762 | ||
| LANDUS | 723167 | DES MOINES | 343 | 315 | Yes | |
| CANADIAN PACIFIC OR CANADIAN PACIFIC RAILWAY OR DM&E OR DM&E RAILROAD OR CPKC | 527121 | DAVENPORT | 299 | 211 | Yes | |
| WINDSTAR LINES INC | 608224 | CARROLL | 275 | 448 | Yes | |
| 5302195 | 96519 | CEDAR RAPIDS | 236 | 257 | Yes | |
| HYDRO-KLEAN | 2190489 | DES MOINES | 231 | 103 | Yes | |
| ATLANTIC COCA-COLA BOTTLING COMPANY | 1938 | ATLANTIC | 190 | 225 | ||
| KNIFE RIVER MIDWEST LLC | 324020 | SIOUX CITY | 103 | 36 | Yes | |
| CAPITOL CAB COMPANY YELLOW CAB TRANS IOWA EXPRESS CO | 902455 | DES MOINES | 100 | 190 | ||
| CEDAR VALLEY CORP LLC | 288800 | WATERLOO | 99 | 105 | Yes | |
| SOUTHWEST IOWA TRANSIT AGENCY | 1269937 | ATLANTIC | 95 | 76 | ||
| THE WALDINGER CORPORATION | 220202 | DES MOINES | 94 | 41 | Yes | |
| RIVER BEND TRANSIT | 724383 | DAVENPORT | 77 | 84 | ||
| PORTZEN CONSTRUCTION INC | 459139 | DUBUQUE | 75 | 120 | ||
| STA-BILT CONSTRUCTION COMPANY | 188470 | HARLAN | 72 | 56 | Yes | |
| CEDAR FALLS CONSTRUCTION COMPANY INC | 425259 | WATERLOO | 72 | 60 | Yes | |
| VERMEER MANUFACTURING COMPANY | 98173 | PELLA | 71 | 94 | ||
| STA OF IOWA INC | 2901999 | JOHNSTON | 69 | 60 | ||
| GOODWIN TUCKER GROUP | 901766 | DES MAINES | 63 | 57 | ||
| WESTERN IOWA TRANSIT | 1194017 | CARROLL | 58 | 29 | ||
| RIDES | 1295416 | SPENCER | 57 | 60 | ||
| WEST UNION TRENCHING INC | 856794 | WEST UNION | 53 | 57 |