689 active carriers · 43 with recent roadside inspections, listed below.
| Carrier | City | Power units | Records |
|---|---|---|---|
| CAROLYN WOOD INCdba THE TROPICAL CONNECTION | SAN MARCOS | 13 | Inspections / crashes |
| KRC ROCK INC | SAN MARCOS | 10 | Inspections / crashes |
| QUALITY ASSURED INC | SAN MARCOS | 1 | Inspections / crashes |
| SOUTHERN CONTRACTING COMPANY | SAN MARCOS | 35 | Inspections / crashes |
| DIAMOND ENVIRONMENTAL SERVICES LP | SAN MARCOS | 319 | Inspections / crashes |
| ARAYA CONSTRUCTION INCdba SERVPRO OF NORTH VISTA SAN MARCOS | SAN MARCOS | 4 | Inspections / crashes |
| PLANT SOURCE INC | SAN MARCOS | 4 | Inspections / crashes |
| M BAR C CONSTRUCTION INC | SAN MARCOS | 27 | Inspections / crashes |
| WEST COAST NURSERIES GROUP INC | SAN MARCOS | 2 | Inspections / crashes |
| FREE BUILDERS SUPPLY INC | SAN MARCOS | 4 | Inspections / crashes |
| AIRX UTILITY SURVEYORS INC | SAN MARCOS | 19 | Inspections / crashes |
| HOLLANDIA DAIRY INC | SAN MARCOS | 67 | Inspections / crashes |
| BBS MANUFACTURING INC | SAN MARCOS | 2 | Inspections / crashes |
| ETS PRODUCTIONS INC | SAN MARCOS | 1 | Inspections / crashes |
| SWANILLON INCdba THE LAND STEWARDS | SAN MARCOS | 8 | Inspections / crashes |
| SAN MARCOS UNIFIED SCHOOL DISTRICT | SAN MARCOS | 99 | Inspections / crashes |
| CARDDINE INC | SAN MARCOS | 3 | Inspections / crashes |
| CARPENTER'S SON INCdba SAN MARCOS HARDWOOD LUMBER CO | SAN MARCOS | 4 | Inspections / crashes |
| MONAGHAN PAVITT ENTERPRISES INCdba CLASSY CLOSETS | SAN MARCOS | 5 | Inspections / crashes |
| FOUR SEASONS TREE CARE INC | SAN MARCOS | 12 | Inspections / crashes |
| TWIN OAKS GROWERS INTERNATIONAL INC | SAN MARCOS | 2 | Inspections / crashes |
| GREEN PERSPECTIVES | SAN MARCOS | 19 | Inspections / crashes |
| DEUPREE TRUCKING CORPORATION | SAN MARCOS | 5 | Inspections / crashes |
| ALLIE'S PARTY EQUIPMENT RENTAL INC. | SAN MARCOS | 0 | Inspections / crashes |
| RAP ENGINEERING INC | SAN MARCOS | 20 | Inspections / crashes |
| COLUMBIA STONE PRODUCTS INC | SAN MARCOS | 9 | Inspections / crashes |
| CALIFORNIA TREE SERVICE INCdba JOHN WEBER CONSTRUCTION LANDSCAPE | SAN MARCOS | 29 | Inspections / crashes |
| VISTA PALLETS INC | SAN MARCOS | 2 | Inspections / crashes |
| ALVAREZ & SON'S TRANSPORT INC | SAN MARCOS | 1 | Inspections / crashes |
| WRIGHT CONSTRUCTION ENGINEERING CORP | SAN MARCOS | 4 | Inspections / crashes |
| CALIFORNIA TOWING AND RECOVERY INCdba CALIFORNIA TOWING | SAN MARCOS | 7 | Inspections / crashes |
| SAN DIEGO FARMS LLCdba FRESH ORIGINS | SAN MARCOS | 2 | Inspections / crashes |
| WESTERN STATE BUILDERS | SAN MARCOS | 9 | Inspections / crashes |
| PACIFIC PIPELINE SUPPLY INC | SAN MARCOS | 3 | Inspections / crashes |
| CR INSULATION INC | SAN MARCOS | 5 | Inspections / crashes |
| BLU BULK TRANSPORT INC | SAN MARCOS | 16 | Inspections / crashes |
| EDGAR GARCIA RENDONdba G R TRANSPORT | SAN MARCOS | 1 | Inspections / crashes |
| SSN ENTERPRISES INCdba AMERICAN CUPS AND PLATES | SAN MARCOS | 3 | Inspections / crashes |
| LUCKY GROWERS INC | SAN MARCOS | 2 | Inspections / crashes |
| OCEAN GROWERS INC | SAN MARCOS | 7 | Inspections / crashes |
| LA HEARTH LLCdba LA HEARTH | SAN MARCOS | 1 | Inspections / crashes |
| SUNSET DISTRIBUTING LLC | SAN MARCOS | 176 | Inspections / crashes |
| JUVENTINO MARTINEZ ORTEGAdba TINO TRANSPORT | SAN MARCOS | 1 | Inspections / crashes |