| Tbh | 65131 | 95 | 99 | Interstate |
| Tevis Energy | 2058320 | 83 | 79 | InterstateHazmat |
| Naturalawn Of America | 1028547 | 65 | 55 | Interstate |
| Carroll Transit System | 1029560 | 38 | 54 | Intrastate |
| Johnson Bus Service | 65214 | 37 | 49 | Interstate |
| Rill's Bus Service | 187193 | 34 | 45 | Interstate |
| Sunset Bus Lines LLC | 3254207 | 34 | 34 | Interstate |
| Tim Kyle Electric | 4098250 | 32 | 32 | Interstate |
| Atlantic Blue LLC | 2938389 | 25 | 25 | Intrastate |
| Dedicated Tanker Group LLC | 2574798 | 24 | 22 | Interstate |
| Tumbleweed Express INC | 772995 | 23 | 22 | Interstate |
| Ridge Equipment Company INC | 3342724 | 23 | 10 | Interstate |
| J M Dorsey INC | 615954 | 21 | 14 | Interstate |
| Glamour Moving Company INC | 517243 | 16 | 6 | Interstate |
| Comcast | 1647281 | 16 | 16 | Interstate |
| Liqua-Grow Turf INC | 403818 | 15 | 15 | Intrastate |
| Quest Freightlines LLC | 3139051 | 15 | 20 | InterstateHazmat |
| Free Spirited Contractor INC | 2331485 | 14 | 10 | Intrastate |
| Specified Commodity Carriers INC | 6862 | 12 | 9 | Interstate |
| Triple J Transfer LLC | 1997498 | 12 | 9 | Interstate |
| Lasting Impressions Limousine Service | 1374014 | 11 | 13 | Interstate |
| Cutter's Corp | 2435994 | 9 | 4 | Intrastate |
| Ivan & J's Trucking INC | 2902132 | 9 | 7 | Interstate |
| Rasmussen Landscaping LLC | 3226235 | 9 | 5 | Intrastate |
| High Tide Transport LLC | 3491422 | 9 | 7 | Interstate |
| Wtc Contractors INC | 913441 | 8 | 11 | Interstate |
| Dcbf Corp | 1629282 | 8 | 16 | Interstate |
| Siegman Brothers | 2485773 | 8 | 2 | Interstate |
| Ride With US INC | 2947752 | 8 | 10 | Intrastate |
| Bosley Oil Company INC | 456603 | 7 | 8 | InterstateHazmat |
| Lavere V Jones | 805622 | 7 | 7 | Intrastate |
| Subsurface Technologies INC | 1055983 | 7 | 3 | InterstateHazmat |
| Tri-County Roofing & Sheet Metal INC | 1453288 | 7 | 5 | Interstate |
| Uz Trucking INC | 3417722 | 7 | 7 | Interstate |
| Carroll Lutheran Village INC | 628416 | 6 | 9 | Interstate |
| Baugher Enterprises INC | 921062 | 6 | 5 | Interstate |
| Westminster Rotary Well Drilling INC | 1053858 | 6 | 3 | Intrastate |
| Max Transport LLC | 1133842 | 6 | 6 | Interstate |
| Burley Construction CO INC | 1162037 | 6 | 5 | Intrastate |
| Hidey's Landscape Supply Yard | 1183384 | 6 | 5 | Intrastate |
| Hall's Tree Experts | 1207289 | 6 | 3 | Intrastate |
| Thomas Roofing CO INC | 1230718 | 6 | 2 | Intrastate |
| Pheasant Echos Farm | 1443053 | 6 | 6 | Interstate |
| Westminster Rescue Mission | 1922594 | 6 | 4 | Intrastate |
| Jonathan Villanueva | 2936317 | 6 | 6 | Intrastate |
| Hillside Hauling & Removal Services | 4039093 | 6 | 1 | Intrastate |
| Earthwork Services LLC | 4327979 | 6 | 2 | Intrastate |
| Streib Electric INC | 4367572 | 6 | 66 | Interstate |
| Modern Comfort Systems INC | 4566017 | 6 | 10 | Interstate |
| Petry's Junk Yard | 298553 | 5 | 3 | Intrastate |
| R D Bowman & Sons INC | 369760 | 5 | 7 | Interstate |
| Null | 525412 | 5 | 5 | Interstate |
| South Carroll Backhoe INC | 621930 | 5 | 5 | Intrastate |
| Hagan & Sons Clearing And Excavating INC | 733486 | 5 | 4 | Intrastate |
| Oak Hill Wood Service & Excavation INC | 1022832 | 5 | 2 | Intrastate |
| Adelphia Prestig Cablevision LLC | 1028685 | 5 | 5 | Intrastate |
| Stansbury Tree Service INC | 1045548 | 5 | 21 | Intrastate |
| 2000116620 | 1106617 | 5 | 6 | Intrastate |
| Ccc Fence | 1342578 | 5 | 5 | Intrastate |
| Gutters Mechanic | 1428085 | 5 | 2 | Intrastate |
| Mtf Communications INC | 1920037 | 5 | 6 | Intrastate |
| Brehm Transfer INC | 2060909 | 5 | 6 | Interstate |
| That Tree Guy Incorporated | 2269018 | 5 | 4 | IntrastateHazmat |
| Pa Martin And Sons LLC | 2396741 | 5 | 6 | Intrastate |
| S W Smith Landscaping LLC | 2422902 | 5 | 4 | IntrastateHazmat |
| Jerry E Johnson | 2805114 | 5 | 1 | Intrastate |
| Aqua Concepts | 3070825 | 5 | 7 | Interstate |
| Big Rick's Lawn Service & Landscaping | 3796173 | 5 | 5 | Intrastate |
| Young Septic Services | 3816519 | 5 | 3 | Intrastate |
| S & D Enterprise LLC | 4136202 | 5 | 5 | Interstate |
| Tylers Hauling & Removal Services LLC | 7518909 | 5 | 2 | Interstate |
| Calhoun Logging | 374491 | 4 | 3 | Interstate |
| Condon Auto Parts INC | 495333 | 4 | 4 | InterstateHazmat |
| Westminster Lawn Service INC | 528563 | 4 | 3 | Interstate |
| Full Spectrum Outdoor Services INC | 725495 | 4 | 5 | Intrastate |
| Church Of The Open Door | 1018904 | 4 | 8 | Interstate |
| Danny Pickett's Tree Service INC | 1060107 | 4 | 2 | Intrastate |
| Douglas Lawn & Landscape LLC | 1212051 | 4 | 8 | Interstate |
| Red Hill Lawn Service INC | 1258271 | 4 | 2 | Interstate |
| First Impression Land Services LLC | 1297332 | 4 | 1 | Intrastate |
| Heath Sharp | 1302651 | 4 | 5 | Intrastate |
| Village Gardeners INC | 1317239 | 4 | 4 | Intrastate |
| Broadview Farms INC | 1345168 | 4 | 3 | Interstate |
| Leppo Excavating LLC | 1526708 | 4 | 2 | Intrastate |
| Bealls Lawn & Garden | 2040984 | 4 | 4 | Intrastate |
| Mcdaniel College INC | 2105222 | 4 | 16 | Interstate |
| Carroll Striping CO | 2356148 | 4 | 3 | Interstate |
| Total Boiler Control INC | 2487508 | 4 | 2 | Interstate |
| A-Team Movers LLC | 2867546 | 4 | 2 | Intrastate |
| Stewart Homes LLC | 2869810 | 4 | 2 | Intrastate |
| Krumrine Farms LLC | 2886466 | 4 | 2 | Interstate |
| Greentech Fuel Management INC | 2907556 | 4 | 8 | Interstate |
| Rsg Enterprises LLC | 2960567 | 4 | 1 | Intrastate |
| S&c Contractors LLC | 2981744 | 4 | 4 | Intrastate |
| Quality Walls And Windows LLC | 3306657 | 4 | 2 | Interstate |
| Green Bridge Construction INC | 3422849 | 4 | 2 | Intrastate |
| Webb Environmental LLC | 3551277 | 4 | 5 | Interstate |
| First Team Logistics | 3647575 | 4 | 2 | Interstate |
| American Roots | 4041917 | 4 | 2 | Intrastate |
| Asaka LLC | 4166956 | 4 | 4 | InterstateHazmat |