| Bl Companies, Inc. | Professional, Scientific, and Technical Services | $6,061,800 | $6,127,234 | 306 | $37.7M |  Research |
| Plimpton & Hills Corporation | Construction | $3,355,751 | $3,395,468 | 280 | $88.6M | Research |
| Hunter's Ambulance Service, Inc. | Health Care and Social Assistance | $3,142,700 | $3,179,724 | 326 | $75.5M | Research |
| Accel International Holdings, Inc. | Manufacturing | $2,387,100 | $2,405,412 | 190 | $49.7M | Research |
| Jonal Laboratories INC | Manufacturing | $2,014,862 | $2,039,544 | 122 | $121.0M | Research |
| Accel International Holdings Inc. | Manufacturing | $2,000,000 | $2,009,973 | 190 | $49.7M | Research |
| Midstate Arc, INC | Health Care and Social Assistance | $1,879,300 | $1,893,562 | 155 | N/A | Research |
| Meriden-New Britain-Berlin Ymca INC | Other Services (except Public Administration) | $1,844,850 | $1,862,376 | 261 | $49.9M | Research |
| Jonal Laboratories Incorporated | Manufacturing | $1,713,475 | $1,728,896 | 113 | $112.1M | Research |
| Meriden-New Britain-Berlin Ymca | Health Care and Social Assistance | $1,681,020 | $1,696,383 | 300 | $48.6M | Research |
| Meliora Academy Inc. | Educational Services | $1,400,100 | $1,419,241 | 97 | $11.6M | Research |
| Lyon & Billard Co | Retail Trade | $1,095,648 | $952,358 | 85 | $17.5M | Research |
| Miller Memorial Community, Inc. | Health Care and Social Assistance | $996,500 | $1,008,321 | 132 | N/A | Research |
| Meriden Manufacturing INC | Manufacturing | $985,155 | $994,377 | 69 | $18.1M | Research |
| Ragozzino Foods, Inc. | Manufacturing | $984,045 | $995,800 | 98 | $34.6M | Research |
| L. Suzio Concrete Company Inc. | Manufacturing | $949,000 | $957,528 | 41 | $40.7M | Research |
| Meriden Manufacturing INC | Manufacturing | $910,307 | $921,256 | 79 | $19.3M | Research |
| The Bradley Home for the Aged | Health Care and Social Assistance | $871,240 | $877,290 | 95 | $16.2M | Research |
| Lyons Tool & Die Company,the | Manufacturing | $827,185 | $833,689 | 48 | $11.7M | Research |
| L. Suzio Construction Co., Inc. | Construction | $790,000 | $798,528 | 32 | $36.5M | Research |
| Connecticut Baptist Homes INC | Health Care and Social Assistance | $781,700 | $741,507 | 102 | N/A | Research |
| Southwick & Meister, Inc. | Manufacturing | $768,260 | $773,190 | 80 | $20.9M | Research |
| Southwick & Meister Inc. | Manufacturing | $767,113 | $771,076 | 104 | $27.2M | Research |
| Fsscorp INC | Administrative and Support and Waste Management | $750,000 | $764,720 | 140 | $22.0M | Research |
| Tuxis-Ohr's Fuel, Inc. | Retail Trade | $740,200 | $746,710 | 48 | $11.5M | Research |