| Cowan Systems LLC | 548880 | 1,882 | 1,882 | InterstateHazmat |
| Willscot | 350040 | 1,426 | 1,120 | Interstate |
| Bge An Exelon Company | 160257 | 688 | 1,063 | InterstateHazmat |
| Wm | 334445 | 333 | 324 | Interstate |
| Cowan Intermodal Group LLC | 215194 | 239 | 226 | InterstateHazmat |
| Quest Transport LLC | 1425906 | 212 | 129 | Interstate |
| Woodlawn Motor Coach INC | 270798 | 198 | 208 | Interstate |
| Mts Express LLC | 1140957 | 145 | 80 | InterstateHazmat |
| Carter Machinery | 122618 | 140 | 131 | InterstateHazmat |
| Cockey's Enterprises INC | 550731 | 135 | 120 | Interstate |
| Mts | 2029816 | 134 | 45 | Interstate |
| Spiniello Global | 2941786 | 122 | 55 | Interstate |
| Cloverland Dairy L P | 65287 | 104 | 120 | Interstate |
| Solutions Transport LLC | 334544 | 100 | 88 | InterstateHazmat |
| Curtis Bay Energy INC | 1692213 | 100 | 67 | InterstateHazmat |
| The Winner Distributing CO | 7027 | 98 | 62 | Intrastate |
| H&s Distribution LLC | 3088514 | 97 | 97 | Interstate |
| Synagro | 629180 | 93 | 88 | Interstate |
| Enterprise Electric Company | 1124087 | 90 | 146 | Intrastate |
| Mcclung Logan Equipment Company INC | 65181 | 85 | 62 | InterstateHazmat |
| Fleet Transitinc | 154471 | 85 | 79 | InterstateHazmat |
| Shepherd Electric Supply | 510567 | 85 | 78 | Interstate |
| Comcast | 1066492 | 85 | 85 | Interstate |
| St John Properties INC | 2150989 | 80 | 80 | Intrastate |
| Family Bridge Corp | 4025196 | 80 | 100 | Intrastate |
| Burrell Motor Coach INC | 3326542 | 78 | 78 | Intrastate |
| Cowan Transport Services LLC | 917652 | 77 | 65 | InterstateHazmat |
| The Marksmen CO | 751050 | 76 | 70 | Interstate |
| North American Millwright The Performance Company | 510099 | 75 | 109 | Interstate |
| Bond Distributing LLC | 4021039 | 70 | 34 | Intrastate |
| Synagro | 271617 | 61 | 48 | Interstate |
| Priority Construction Corporation | 1055173 | 58 | 58 | IntrastateHazmat |
| Northeastern Supply INC | 311959 | 53 | 53 | Interstate |
| Bluestar Technologies INC | 2387849 | 53 | 44 | Intrastate |
| 2828655 | 88545 | 52 | 14 | Intrastate |
| Iacoboni Site Specialists INC | 438199 | 52 | 26 | Interstate |
| Devere Insulation CO | 518180 | 52 | 56 | Interstate |
| Big Boy Transportation LLC | 2360069 | 52 | 52 | Interstate |
| Petroleum Management INC | 776517 | 51 | 46 | InterstateHazmat |
| D And G Brice Contractors INC | 1049090 | 51 | 48 | Intrastate |
| Terminal Transportation Services LLC | 4301353 | 51 | 83 | Interstate |
| City Wide Bus Company | 527050 | 50 | 50 | Intrastate |
| Paniaguas Enterprises INC | 1300411 | 50 | 45 | Intrastate |
| Daily's Landscaping | 1068169 | 49 | 47 | Intrastate |
| Allender Group INC | 952401 | 48 | 45 | Intrastate |
| Allied Contractors INC | 594619 | 47 | 20 | Interstate |
| P Flanigan & Sons INC | 965835 | 46 | 112 | IntrastateHazmat |
| American Limousines INC | 850303 | 45 | 62 | Interstate |
| Fishman Flooring Solutions | 337512 | 41 | 37 | InterstateHazmat |
| Clean Air Heating & Air Conditioning CO INC | 1483693 | 41 | 35 | Intrastate |
| Ted's Towing Service INC | 65125 | 40 | 29 | InterstateHazmat |
| Tilley Distribution INC | 65139 | 39 | 22 | InterstateHazmat |
| R E Harrington Plumbing & Heating INC | 1059477 | 39 | 20 | Intrastate |
| Rukert Terminals Corporation | 6922 | 38 | 28 | Interstate |
| The George J Falter CO | 844277 | 38 | 29 | Interstate |
| John Hopkins Care At Home | 575208 | 36 | 31 | InterstateHazmat |
| Civic Works | 6067335 | 35 | 5 | Intrastate |
| Evan Transportation INC | 547385 | 34 | 38 | Interstate |
| Dream Mobility LLC | 2519564 | 34 | 34 | Intrastate |
| Terminal Transportation Services | 4246878 | 34 | 34 | Intrastate |
| Leonard Paper CO | 339752 | 33 | 39 | InterstateHazmat |
| Metro Ready Mix INC | 1034888 | 32 | 27 | Intrastate |
| Commercial Utilities LLC | 3352791 | 32 | 32 | Interstate |
| Up-To-Date Laundry | 336301 | 31 | 43 | Interstate |
| Machado Construction Company INC | 898879 | 31 | 30 | Intrastate |
| Fells Point Wholesale Meats | 1069130 | 31 | 29 | Interstate |
| Mid Atlantic Express LLC | 3398146 | 31 | 47 | Interstate |
| Gcp Logistics INC | 2285466 | 30 | 30 | Interstate |
| Taylor Made Transportation Service INC | 2402080 | 30 | 30 | Intrastate |
| The American Ashpalt Paving CO LLC | 333148 | 28 | 26 | InterstateHazmat |
| Guardrails Etc INC | 339373 | 28 | 16 | Interstate |
| Perry Moving Services | 966254 | 28 | 20 | Interstate |
| Ace Environmental Services LLC | 1372729 | 28 | 17 | IntrastateHazmat |
| Crw Parts INC | 84736 | 27 | 21 | Interstate |
| Jet Blast LLC | 670287 | 27 | 22 | Interstate |
| Classic Lawn & Landscape INC | 1183156 | 27 | 23 | Interstate |
| Blades INC | 1715784 | 27 | 10 | Intrastate |
| The Arc Baltimore | 1048608 | 26 | 45 | Intrastate |
| Second Chance INC | 1421336 | 26 | 15 | Interstate |
| M-Scrap Transportation Services LLC | 1581232 | 26 | 10 | Intrastate |
| Baltimore Recycling Center | 2063779 | 26 | 23 | Interstate |
| Northeast Foods INC | 247538 | 25 | 29 | Interstate |
| Sullivan's Garage | 402285 | 25 | 13 | InterstateHazmat |
| The Whiting -Turner Contracting CO | 472200 | 25 | 20 | InterstateHazmat |
| Cossentino Contracting Company INC | 540054 | 25 | 18 | Interstate |
| Constellation Power Source Generation INC | 908307 | 25 | 71 | Intrastate |
| Sweeprite Services INC | 1033432 | 25 | 22 | Intrastate |
| Monumental Paving And Excavating INC | 1035555 | 25 | 28 | IntrastateHazmat |
| Ds Pipe & Steel Supply LLC | 1640687 | 25 | 32 | Interstate |
| Dvorak LLC | 1716752 | 25 | 78 | InterstateHazmat |
| Coastal Crane Service | 2834122 | 25 | 23 | Interstate |
| Self Sufficient Trucking | 3189029 | 25 | 4 | Intrastate |
| Tate Engineering INC | 391094 | 24 | 67 | InterstateHazmat |
| Baltimore International Warehousing & Transportation INC | 423343 | 24 | 24 | InterstateHazmat |
| Bio Medical Waste Services INC | 473668 | 24 | 19 | InterstateHazmat |
| A 2 Z Environmental Group LLC | 844344 | 24 | 7 | Interstate |
| The Salvation Army | 1121200 | 24 | 23 | Intrastate |
| Titan Industrial Services INC | 1249919 | 24 | 5 | Interstate |
| Petro Express Company | 351509 | 23 | 16 | InterstateHazmat |
| Holly Poultry | 357536 | 23 | 24 | Interstate |