| COMPETE TRUCKING LLC | 1829693 | NORTH LIBERTY | 1 |
| COMPLETE AG SERVICES LLC | 4554835 | GILMAN | 13 |
| COMPLETE LIFT TRUCK SERVICE AND SUPPLY | 2931742 | EVANSDALE | 0 |
| COMPLETE PRESERVATION LLC | 2269953 | SIOUX CITY | 0 |
| COMPLETE TRUCKING LLC | 4494867 | OSKALOOSA | 1 |
| COMPLIANCE CONSTRUCTION LLC | 3989157 | DAVENPORT | 1 |
| COMPRENHENSIVE SYSTEM INC | 2119376 | CHARLES CITY | 3 |
| COMPRESSED AIR & EQUIPMENT CO | 644579 | LA PORTE CITY | 4 |
| COMPUTER TRANSPORTATION SERVICES LTD | 282529 | BREDA | 0 |
| COMSTOCK CONCRETE LIFTING LLC | 4459190 | SIOUX CITY | 1 |
| CON-STRUCT INC | 725635 | AMES | 40 |
| CONARD TRUCKING LLC | 4308171 | BURLINGTON | 3 |
| CONCERNED INC | 1914839 | HARLAN | 1 |
| CONCEVIDA TRANSPORT GROUP INC | 4111577 | BELLEVUE | 1 |
| CONCORD FREIGHT SOLUTIONS LLC | 4105904 | DAVENPORT | 0 |
| CONCRETE & MORE LLC | 4323684 | DALLAS CENTER | 1 |
| CONCRETE CENTRAL LLC | 2210037 | HILLS | 10 |
| CONCRETE CONCEPTS INC | 2559381 | FARLEY | 1 |
| CONCRETE CONSTRUCTION INC | 2395836 | ROCK VALLEY | 1 |
| CONCRETE CREATIONS LLC | 1507966 | COUNCIL BLUFFS | 4 |
| CONCRETE EFX | 2010842 | RUNNELLS | 2 |
| CONCRETE EXPRESSIONS LLC | 2115093 | CLARINDA | 1 |
| CONCRETE IMPRESSIONS | 2874938 | LAWTON | 2 |
| CONCRETE INC | 437737 | MARSHALLTOWN | 41 |
| CONCRETE LASER SERVICES LLC | 4327596 | CARROLL | 2 |
| CONCRETE PLUS INC | 1528929 | SIOUX CITY | 4 |
| CONCRETE PRODUCTS CO | 64185 | SIOUX CITY | 4 |
| CONCRETE SERVICES KAK LLC | 2458009 | SABULA | 2 |
| CONCRETE TECHNOLOGIES INC | 1159663 | GRIMES | 44 |
| CONCRETE XCHANGE | 1419174 | CEDAR RAPIDS | 2 |
| CONDON AG SERVICES | 6565294 | BARNUM | 1 |
| CONDONS SERVICE LTD | 720771 | BOONE | 3 |
| CONDRA FARMS | 3500429 | NUMA | 1 |
| CONFER MA-DE LLC | 1152812 | STANTON | 2 |
| CONLEE TREE CARE AND LAND IMPROVEMENT | 2018153 | ARGYLE | 1 |
| CONLEY'S TRUCKING INC | 725235 | AMES | 13 |
| CONLON CONSTRUCTION CO | 1081728 | DUBUQUE | 11 |
| CONN BROS LLC | 3271832 | ATLANTIC | 2 |
| CONN TRUCKING INC | 3255866 | JANESVILLE | 1 |
| CONNECTING LANES LLC | 3198634 | MASON CITY | 0 |
| CONNELLY INC | 2139015 | FAIRFIELD | 6 |
| CONNER ATHLETIC PRODUCTS INC | 739130 | JEFFERSON | 6 |
| CONNER DENCKLAU | 2596241 | FORT DODGE | 1 |
| CONNER MEYER | 3652550 | POSTVILLE | 1 |
| CONNERS ALL AROUND TRANSPORT SERVICES LLC | 5084558 | FAIRFAX | 2 |
| CONNIE SCHROEDER | 2000139 | FOREST CITY | 1 |
| CONNOLLY CONSTRUCTION INC | 526664 | PEOSTA | 6 |
| CONNOLLY EXCAVATING INC | 3842138 | CASCADE | 2 |
| CONNOLLY TRUCKING INC | 755524 | BERNARD | 5 |
| CONNOR BROS | 726431 | MUSCATINE | 2 |
| CONNOR JOHN WEIDA | 4459517 | MAURICE | 1 |
| CONNOR TRUCKING LLC | 785539 | MUSCATINE | 5 |
| CONRAD SHADA TRUCKING INC | 949426 | ANAMOSA | 4 |
| CONRAD TRUCKING INC | 801253 | FT MADISON | 26 |
| CONRADI TRUCKING LLC | 3099403 | BRISTOW | 1 |
| CONSENSUS GROUP LLC | 4184894 | JOHNSTON | 1 |
| CONSOLIDATED FREIGHT AND STORAGE COMPANY INC | 53802 | WEBSTER CITY | 0 |
| CONSOLIDATED REFRIGERATED SERVICES LLC | 779834 | KINGSLEY | 2 |
| CONSOLIDATED SERVICES LTD | 2111538 | IOWA FALLS | 3 |
| CONSTRUCKED LLC | 4442498 | DES MOINES | 1 |
| CONSTRUCTION & AGGREGATE PRODUCTS INC | 790164 | DES MOINES | 1 |
| CONSTRUCTION LEADERS COMPANY LLC | 3303846 | URBANDALE | 11 |
| CONSTRUCTION RESOURCES INCORPORATED | 1569888 | FORT MADISON | 10 |
| CONSTRUCTIVE CONSULTANTS INC | 2643501 | BOONE | 2 |
| CONSUMER WASTE LLC | 1620951 | LECLAIRE | 3 |
| CONSUMERS COOPERATIVE SOCIETY | 550558 | CORALVILLE | 8 |
| CONSUMERS ENERGY | 1991987 | MARSHALLTOWN | 25 |
| CONSUMERS HAULING LLC | 2343409 | SPIRIT LAKE | 1 |
| CONSUMERS SUPPLY DISTRIBUTING LLC | 146517 | SIOUX CITY | 70 |
| CONTAINER CONTROL SYSTEMS INC | 858304 | WATERLOO | 1 |
| CONTENTED ACRES TRANSPORTATION LLC | 3968426 | DECORAH | 5 |
| CONTINENTAL LOGISTICS LLC | 2417335 | SEYMOUR | 0 |
| CONTINENTAL MANUFACTURING CHEMISTS | 3253041 | HUXLEY | 1 |
| CONTINENTAL MOTORWAYS INC | 3304084 | DES MOINES | 1 |
| CONTINENTAL SUPERIOR TRI CITY LLC | 4320473 | DAVENPORT | 1 |
| CONTINENTAL WAREHOUSE GROUP LTD | 2211879 | DES MOINES | 0 |
| CONTRACT TRANSPORT INC | 165826 | DES MOINES | 48 |
| CONTRACTING SPECIALISTS INC | 1404987 | OTTUMWA | 5 |
| CONTRACTOR SOLUTIONS | 2908829 | ALTOONA | 15 |
| CONTRACTORS RENTAL COMPANY | 2116863 | DES MOINES | 2 |
| CONTRACTORS SALES & SERVICE LLC | 1482992 | DES MOINES | 3 |
| CONTROL INSTALLATIONS OF IOWA INC | 2150774 | DES MOINES | 9 |
| CONTROLLED MATERIALS AND EQUIPMENT TRANSPORTATION CORPORATION | 384786 | COUNCIL BLUFFS | 16 |
| CONVEYOR ENGINEERING & MANUFACTURING CO | 632350 | CEDAR RAPIDS | 4 |
| COOK BROS LTD | 1994641 | WINTHROP | 3 |
| COOK FARMS ENTERPRISE LTD | 1992723 | LAMONT | 6 |
| COOK SIDING SUPPLY INC | 394106 | WALL LAKE | 4 |
| COOKE MILK HAULING INC | 732545 | GREELEY | 4 |
| COOKSEY TOWING LLC | 4186476 | OSKALOOSA | 1 |
| COOPER FARMS INC | 198067 | TRAER | 3 |
| COOPER MOTORS INC | 720863 | ALLISON | 1 |
| COOPER TRUCK & TRAILER LLC | 2252668 | EMERSON | 1 |
| COOPER TRUCKING LLC | 1446525 | CORNING | 1 |
| COOPER'S COLLISION INC | 3123429 | FORT MADISON | 0 |
| COOPERATIVE ENERGY COMPANY | 69791 | SIBLEY | 50 |
| COOPERATIVE FARMERS ELEVATOR | 299222 | ROCK VALLEY | 158 |
| COOPERATIVE GAS & OIL COMPANY | 887456 | SIOUX CENTER | 15 |
| COOPERS HAULING LLC | 3820368 | JOICE | 1 |
| COOPERS OSAGE AUTO INC | 3046434 | OSAGE | 1 |
| COPELAND AUTO BODY INCORPORATED | 1693190 | HEDRICK | 9 |