| Knife River | 281308 | 222 | 63 | Interstate |
| DBA Dss DBA Wyoming Rents | 52081 | 181 | 179 | InterstateHazmat |
| Natrona County School District | 3408454 | 119 | 92 | Interstate |
| Prairie Field Services LLC | 2170456 | 113 | 117 | InterstateHazmat |
| Homax Oil Sales INC | 175899 | 97 | 64 | InterstateHazmat |
| Bridger Pipeline LLC | 1238967 | 95 | 53 | Interstate |
| Inno Solutions INC | 899962 | 87 | 87 | Interstate |
| City Of Casper | 535361 | 55 | 124 | Intrastate |
| Compression Leasing Services INC | 1026626 | 55 | 55 | Interstate |
| Action Cargo Corporation | 1294615 | 50 | 107 | Interstate |
| Keiffer Sanitation | 789403 | 41 | 25 | Intrastate |
| 2g Trucking LLC | 4118737 | 40 | 47 | Intrastate |
| Spl | 240804 | 37 | 39 | Interstate |
| Wyoming Rents LLC | 843542 | 32 | 20 | Intrastate |
| Oil Well Perforators INC | 101114 | 30 | 25 | IntrastateHazmat |
| PC Transport INC | 191414 | 30 | 24 | InterstateHazmat |
| Henry Bros Logistics LLC | 3319046 | 28 | 34 | Interstate |
| James W Mcintosh Contractor | 705564 | 25 | 11 | Intrastate |
| Mcmurry Ready Mix CO | 988524 | 25 | 27 | IntrastateHazmat |
| 71 Construction | 473514 | 24 | 21 | IntrastateHazmat |
| Melco Tank Cleaning LLC | 4570241 | 23 | 12 | InterstateHazmat |
| Childers Trucking | 306708 | 22 | 22 | InterstateHazmat |
| Continental Industries Field Services LLC | 1319318 | 22 | 7 | Interstate |
| D R Truking | 2296075 | 22 | 17 | Intrastate |
| Mckendree Trucking | 314226 | 20 | 40 | Interstate |
| USA Trucking | 322859 | 20 | 15 | InterstateHazmat |
| Scott's Hot Shot LLC | 1266546 | 19 | 18 | Interstate |
| Cobra Trucking INC | 212040 | 18 | 15 | Interstate |
| Crum Electric Supply CO INC | 988357 | 18 | 10 | Interstate |
| Ramshorn Construction INC | 443260 | 16 | 6 | IntrastateHazmat |
| U-Know Service LLC | 174559 | 15 | 5 | InterstateHazmat |
| Keyhole Technologies LLC | 1434902 | 15 | 20 | Interstate |
| Double Drop Construction LLC | 4267429 | 15 | 12 | Interstate |
| Fiber Chem INC | 1944422 | 14 | 28 | Interstate |
| Mcafee Hauling LLC | 1359969 | 13 | 12 | Interstate |
| On The Hook LLC | 2587630 | 13 | 11 | IntrastateHazmat |
| Wayne Coleman Construction INC | 726388 | 12 | 5 | InterstateHazmat |
| Evolution Services LLC | 2548985 | 12 | 11 | Interstate |
| Two Wolves Transport LLC | 2835835 | 12 | 6 | Interstate |
| Grizzly Excavating LLC | 1465717 | 11 | 4 | Intrastate |
| E & F Towing Transport & Recovery INC | 1860789 | 11 | 5 | InterstateHazmat |
| Reeb Welding | 2144007 | 11 | 4 | Interstate |
| Big Horn Wireline LLC | 3891257 | 11 | 19 | InterstateHazmat |
| True Drilling LLC | 309389 | 10 | 6 | IntrastateHazmat |
| Key Trucking INC | 333897 | 10 | 10 | Intrastate |
| Key Trucking LLC | 706654 | 10 | 9 | Intrastate |
| Atlas Energy Service | 3098349 | 10 | 10 | Intrastate |
| Granite Peak Fabrication | 3628675 | 10 | 7 | Interstate |
| V&s Group LLC | 3754249 | 10 | 5 | Interstate |
| Williams Trucking INC | 245067 | 9 | 8 | Interstate |
| Sid's Welding & Diversified Services INC | 812686 | 9 | 5 | Intrastate |
| J W Morgan Trucking | 981013 | 9 | 7 | Interstate |
| Bloedorns | 1165192 | 9 | 5 | Intrastate |
| Cartel Equipment LLC Cartel Transportation LLC Trident LLC | 2929032 | 9 | 1 | InterstateHazmat |
| Buckshot Trucking LLC | 2962520 | 9 | 8 | InterstateHazmat |
| Michaels Fence & Supply INC | 3335263 | 9 | 8 | Intrastate |
| D-K Hauling | 1596235 | 8 | 6 | Intrastate |
| Green Dirt Mining & Hauling | 2310240 | 8 | 2 | Intrastate |
| Henry Bros LLC | 4318098 | 8 | 4 | Interstate |
| The Fix USA LLC | 4511458 | 8 | 5 | Interstate |
| Mpi | 314370 | 7 | 7 | InterstateHazmat |
| Wyoming Building Supply INC | 475411 | 7 | 8 | Interstate |
| Hall's Custom Paving & Excavation | 714397 | 7 | 3 | Intrastate |
| Dbe | 2093178 | 7 | 2 | Intrastate |
| Trilliant Oilfield Services LLC | 3420651 | 7 | 1 | Intrastate |
| Bumpa And Sons Trucking | 3518381 | 7 | 7 | Interstate |
| Agk Transport Corp | 3659095 | 7 | 7 | Interstate |
| Dan Robinett Trucking | 658393 | 6 | 3 | Interstate |
| N R Bideau Drilling | 706606 | 6 | 3 | Intrastate |
| Crimm Exploration | 1920175 | 6 | 2 | Intrastate |
| Propak Energy Service USA Ltd | 3006822 | 6 | 8 | Interstate |
| Night Owl Express LLC | 3822280 | 6 | 6 | Interstate |
| Rocky Mountain Freight INC | 4145395 | 6 | 7 | Interstate |
| Triad Directional Drilling | 4352902 | 6 | 5 | Intrastate |
| Murray Drilling Service INC | 307548 | 5 | 2 | Intrastate |
| Modern Electric CO | 531722 | 5 | 9 | Intrastate |
| T L Crimm Drilling | 971786 | 5 | 2 | Intrastate |
| Casper Electric INC | 1144271 | 5 | 7 | Interstate |
| Superior Signs Supply LLC | 1158030 | 5 | 1 | Interstate |
| Casper Beverage | 1181976 | 5 | 4 | Intrastate |
| Keith Rummel | 1422591 | 5 | 4 | Interstate |
| Nix Sign CO LLC | 1838370 | 5 | 3 | Intrastate |
| Frontier Welding & Fabrication LLC | 1851982 | 5 | 3 | IntrastateHazmat |
| B & H Rig And Tong Sales INC | 2201529 | 5 | 12 | Interstate |
| Ray Underwood Transportation LLC | 2390127 | 5 | 6 | Intrastate |
| Tcm Welding Service LLC | 2420454 | 5 | 5 | Intrastate |
| Pepper Tank & Contracting | 2433442 | 5 | 2 | Interstate |
| Trex Hydro Excavating INC | 3267615 | 5 | 7 | Intrastate |
| Revolutions Transport LLC | 4159634 | 5 | 5 | Interstate |
| M & M Underground | 4541697 | 5 | 4 | Interstate |
| Cmi-Teco | 419086 | 4 | 1 | Intrastate |
| Bar D Signs INC | 468843 | 4 | 3 | Interstate |
| J B Stuart & Son Trucking | 676022 | 4 | 4 | Intrastate |
| Griswold's American Disposal INC | 711207 | 4 | 2 | Intrastate |
| Stoval Beverage CO INC | 721905 | 4 | 6 | Intrastate |
| S N S Outfitters & Guide Service | 782865 | 4 | 3 | Intrastate |
| Ridgeway Trucking LLC | 910879 | 4 | 8 | Interstate |
| J & G Landscaping INC | 940235 | 4 | 1 | Intrastate |
| Jlp Construction INC | 1039434 | 4 | 3 | Intrastate |
| Forman's Quality Machine & Repairs INC | 1102633 | 4 | 2 | Intrastate |