| Rank | Company | 2012 State Government Revenue ($) |
| 1 | Jacobs Engineering Group | $422,670,000 |
| 2 | AECOM Technology Corp. | $107,390,000 |
| 3 | URS Corp. | $39,573,323 |
| 4 | Michael Baker Jr. | $14,510,000 |
| 5 | Simpson Gumpertz & Heger | $8,900,000 |
| 6 | Arup | $8,586,368 |
| 7 | Dewberry | $7,169,346 |
| 8 | STV | $6,920,000 |
| 9 | Coffman Engineers | $3,966,000 |
| 10 | Science Applications International Corp. | $3,652,796 |
| 11 | Merrick & Co. | $3,500,000 |
| 12 | RMF Engineering Design | $3,200,000 |
| 13 | WSP USA | $2,875,000 |
| 14 | Thornton Tomasetti | $2,138,203 |
| 15 | Rolf Jensen & Associates | $2,000,000 |
| 16 | Eaton Energy Solutions | $1,970,568 |
| 17 | RDK Engineers | $1,964,000 |
| 18 | Vanderweil Engineers | $1,886,000 |
| 19 | Smith Seckman Reid | $1,752,739 |
| 20 | Wiss, Janney, Elstner Associates | $1,510,000 |
| 21 | Shive-Hattery | $1,362,341 |
| 22 | Brinjac Engineering | $1,160,170 |
| 23 | Clark Nexsen | $1,145,879 |
| 24 | TTG | $1,050,500 |
| 25 | KPFF Consulting Engineers | $1,000,000 |
| 26 | Interface Engineering | $894,365 |
| 27 | Affiliated Engineers | $866,000 |
| 28 | KJWW Engineering Consultants | $826,098 |
| 29 | Barge, Waggoner, Sumner and Cannon | $800,000 |
| 29 | H.F. Lenz | $800,000 |
| 31 | Bergmann Associates | $578,000 |
| 32 | Davis, Bowen & Friedel | $574,755 |
| 33 | KCI Technologies | $500,000 |
| 34 | TLC Engineering for Architecture | $478,921 |
| 35 | Newcomb & Boyd | $458,031 |
| 36 | Spectrum Engineers | $402,673 |
| 37 | GRW | $338,725 |
| 38 | Aon Fire Protection Engineering | $300,000 |
| 38 | Glumac | $300,000 |
| 38 | Syska Hennessy Group | $300,000 |
| 41 | GRAEF | $259,738 |
| 42 | SSOE Group | $219,075 |
| 43 | CTLGroup | $200,000 |
| 43 | M-E Engineers | $200,000 |
| 45 | Primera Engineers | $162,000 |
| 46 | Walker Parking Consultants | $150,000 |
| 47 | Guernsey | $127,854 |
| 48 | CJL Engineering | $118,000 |
| 49 | French & Parrello Associates | $100,000 |
| 49 | Paulus, Sokolowski and Sartor | $100,000 |
| 49 | Peter Basso Associates | $100,000 |
| 52 | Heapy Engineering | $98,982 |
| 53 | Wick Fisher White | $76,450 |
| 54 | Degenkolb Engineers | $71,640 |
| 55 | OLA Consulting Engineers | $70,000 |
| 56 | Allen & Shariff | $60,000 |
| 57 | Wallace Engineering | $50,000 |
| 58 | Bridgers & Paxton Consulting Engineers | $48,233 |
| 59 | G&W Engineering | $40,000 |
| 60 | Henderson Engineers | $35,398 |
| 61 | KLH Engineers | $27,600 |
| 62 | Ross & Baruzzini | $25,993 |
| 63 | Apogee Consulting Group | $19,000 |
| 64 | Walter P Moore | $15,300 |
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