| Rank | Company | 2012 Local Government Revenue ($) |
| 1 | STV | $170,285,000 |
| 2 | URS Corp. | $58,897,110 |
| 3 | AECOM Technology Corp. | $50,000,000 |
| 4 | Arup | $18,981,280 |
| 5 | Smith Seckman Reid | $16,715,381 |
| 6 | Science Applications International Corp. | $15,801,804 |
| 7 | Dewberry | $9,114,869 |
| 8 | Simpson Gumpertz & Heger | $8,400,000 |
| 9 | Syska Hennessy Group | $8,141,149 |
| 10 | Walker Parking Consultants | $7,700,000 |
| 11 | Michael Baker Jr. | $6,400,000 |
| 12 | Walter P Moore | $5,367,002 |
| 13 | Clark Nexsen | $5,085,734 |
| 14 | Shive-Hattery | $4,891,919 |
| 15 | Aon Fire Protection Engineering | $3,000,000 |
| 15 | French & Parrello Associates | $3,000,000 |
| 17 | Glumac | $2,790,000 |
| 18 | M/E Engineering | $2,268,700 |
| 19 | GRAEF | $2,259,738 |
| 20 | Sparling | $2,191,493 |
| 21 | Coffman Engineers | $2,176,000 |
| 22 | TLC Engineering for Architecture | $1,985,092 |
| 23 | KJWW Engineering Consultants | $1,943,760 |
| 24 | Ross & Baruzzini | $1,881,254 |
| 25 | Thornton Tomasetti | $1,805,320 |
| 26 | Burns & McDonnell | $1,500,000 |
| 27 | Affiliated Engineers | $1,493,000 |
| 28 | WSP USA | $1,475,000 |
| 29 | Interface Engineering | $1,467,579 |
| 30 | TTG | $1,250,700 |
| 31 | Newcomb & Boyd | $1,159,914 |
| 32 | RDK Engineers | $1,147,000 |
| 33 | KPFF Consulting Engineers | $1,000,000 |
| 33 | Merrick & Co. | $1,000,000 |
| 33 | Rolf Jensen & Associates | $1,000,000 |
| 36 | Henderson Engineers | $938,172 |
| 37 | Barge, Waggoner, Sumner and Cannon | $900,000 |
| 38 | Heapy Engineering | $766,568 |
| 39 | Primera Engineers | $763,000 |
| 40 | Degenkolb Engineers | $709,034 |
| 41 | Wiss, Janney, Elstner Associates | $700,000 |
| 42 | Environmental Systems Design | $635,100 |
| 43 | ThermalTech Engineering | $625,000 |
| 44 | M-E Engineers | $600,000 |
| 45 | GHT Limited | $550,000 |
| 46 | Bridgers & Paxton Consulting Engineers | $540,170 |
| 47 | KCI Technologies | $500,000 |
| 47 | Paulus, Sokolowski and Sartor | $500,000 |
| 49 | AKF Group | $483,020 |
| 50 | Zak Companies | $443,642 |
| 51 | GRW | $422,280 |
| 52 | Buro Happold Consulting Engineers | $410,000 |
| 53 | Davis, Bowen & Friedel | $402,776 |
| 54 | Vanderweil Engineers | $399,400 |
| 55 | Bergmann Associates | $399,000 |
| 56 | Guernsey | $383,954 |
| 57 | Brinjac Engineering | $364,145 |
| 58 | Eaton Energy Solutions | $356,516 |
| 59 | H&A Architects & Engineers | $320,929 |
| 60 | CTLGroup | $300,000 |
| 61 | Dunham Associates | $290,000 |
| 62 | Apogee Consulting Group | $284,000 |
| 63 | Allen & Shariff | $240,000 |
| 64 | CJL Engineering | $215,000 |
| 65 | KLH Engineers | $200,905 |
| 66 | OLA Consulting Engineers | $200,000 |
| 67 | Haynes Whaley Associates | $163,550 |
| 68 | Wallace Engineering | $150,000 |
| 69 | Spectrum Engineers | $144,338 |
| 70 | Wick Fisher White | $137,400 |
| 71 | H.F. Lenz | $100,000 |
| 71 | Peter Basso Associates | $100,000 |
| 73 | G&W Engineering | $80,000 |
| 74 | P2S Engineering | $59,268 |
| 75 | FBA Engineering | $50,000 |
| 75 | Rist-Frost-Shumway Engineering | $50,000 |
| 77 | Total Building Commissioning | $38,192 |
| 78 | Kamm Consulting | $27,425 |
| 79 | SSOE Group | $17,850 |
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