| Milton C. Beebe & Sons, Inc. | Construction | $967,700 | $974,646 | 42 | $15.7M |  Research |
| Milton C Beebe & Sons Inc. | Construction | $947,527 | $960,351 | 41 | $12.7M | Research |
| Storrs Family Dentistry | Unknown | $209,400 | $210,918 | 14 | N/A | Research |
| Desiato Sand & Gravel Corporation | Construction | $197,235 | $199,737 | 16 | $6.0M | Research |
| Dog Lane Cafe LLC | Accommodation and Food Services | $183,600 | $184,571 | 40 | $7.1M | Research |
| Storrs Family Dentistry LLC | Health Care and Social Assistance | $164,342 | $165,392 | 14 | <$5M | Research |
| Mansfield Discovery Depot INC | Professional, Scientific, and Technical Services | $150,000 | $151,352 | 23 | <$5M | Research |
| Mansfield Discovery Depot, INC | Professional, Scientific, and Technical Services | $150,000 | $151,763 | 22 | <$5M | Research |
| Academic Keys LLC | Administrative and Support and Waste Management | $108,078 | $108,489 | 6 | <$5M | Research |
| Grapevine Catering LLC | Accommodation and Food Services | $107,432 | $108,127 | 15 | <$5M | Research |
| Hops 44 LLC | Accommodation and Food Services | $104,037 | $104,636 | 14 | <$5M | Research |
| Khr Inc. | Accommodation and Food Services | $79,506 | $80,238 | 12 | <$5M | Research |
| Halle Drywall Specialists Inc. | Construction | $60,785 | $61,092 | 4 | <$5M | Research |
| Grapevine Catering, LLC | Accommodation and Food Services | $57,307 | $57,800 | 40 | <$5M | Research |
| A Wonderful Life LLC | Accommodation and Food Services | $56,316 | $50,330 | 17 | <$5M | Research |
| B'nai B'rith Hillel Foundation of Connecticut INC | Other Services (except Public Administration) | $54,870 | $55,186 | 3 | N/A | Research |
| R & B Commercial Construction | Construction | $54,215 | $54,733 | 6 | $6.8M | Research |
| Community Children's Center INC | Health Care and Social Assistance | $47,592 | $47,879 | 12 | N/A | Research |
| Mansfield Training School District 1199 INC | Health Care and Social Assistance | $45,573 | $45,903 | 8 | N/A | Research |
| Steven Rogers | Accommodation and Food Services | $45,550 | $45,976 | 13 | <$5M | Research |
| Dick's Auto Care LLC | Other Services (except Public Administration) | $42,500 | $42,761 | 5 | <$5M | Research |
| Greenstar LLC | Administrative and Support and Waste Management | $41,000 | $41,335 | 5 | <$5M | Research |
| Mansfield Training School District | Health Care and Social Assistance | $37,959 | $38,194 | 7 | N/A | Research |
| W.h.g.r. INC | Accommodation and Food Services | $37,934 | $38,298 | 16 | <$5M | Research |
| Maya Paulose | Health Care and Social Assistance | $35,250 | $35,506 | 4 | <$5M | Research |