| Arbor Care Center-Fullerton, LLC | Health Care and Social Assistance | $560,400 | $551,823 | 82 | $14.0M |  Research |
| Christensen Cattle Company INC | Agriculture, Forestry, Fishing and Hunting | $333,505 | $336,405 | 44 | $7.2M | Research |
| Christensen Cattle Company Inc. | Agriculture, Forestry, Fishing and Hunting | $333,505 | $335,265 | 43 | $7.0M | Research |
| Daniel J Maas DDS | Health Care and Social Assistance | $161,900 | $163,029 | 10 | <$5M | Research |
| Melissa M Schock DDS LLC | Health Care and Social Assistance | $142,597 | $143,269 | 8 | <$5M | Research |
| Len & Jo's Supermarket Inc. | Retail Trade | $94,188 | $94,941 | 8 | <$5M | Research |
| Countryside Veterinary Clinic PC | Professional, Scientific, and Technical Services | $91,838 | $92,565 | 22 | <$5M | Research |
| Christensen Trucking INC | Transportation and Warehousing | $70,960 | $71,238 | 7 | <$5M | Research |
| Christensen Trucking INC | Transportation and Warehousing | $70,960 | $71,451 | 7 | <$5M | Research |
| Schweitz Equipment Company INC | Wholesale Trade | $65,000 | $65,504 | 7 | <$5M | Research |
| Schweitz Equipment Co Inc. | Wholesale Trade | $62,815 | $63,149 | 5 | <$5M | Research |
| Cedar Valley Lumber Company Fullerton LLC | Retail Trade | $57,212 | $57,569 | 10 | <$5M | Research |
| Reimer Pharmacy, LLC | Retail Trade | $52,942 | $53,468 | 9 | <$5M | Research |
| Valley View Assisted Living LLC | Health Care and Social Assistance | $52,050 | $52,260 | 16 | <$5M | Research |
| Valley View, L.l.c. | Health Care and Social Assistance | $52,000 | $52,363 | 9 | <$5M | Research |
| Smith and Sons Repair, LLC | Other Services (except Public Administration) | $51,335 | $51,569 | 4 | <$5M | Research |
| Sillivan Agency INC | Administrative and Support and Waste Management | $45,926 | $46,320 | 5 | <$5M | Research |
| Keiths Repair & Auto Sales Inc. | Other Services (except Public Administration) | $42,287 | $42,733 | 3 | <$5M | Research |
| Craig Frenzen | Agriculture, Forestry, Fishing and Hunting | $38,629 | $38,801 | 4 | <$5M | Research |
| Malander Feedyards, LLC | Agriculture, Forestry, Fishing and Hunting | $36,205 | $36,437 | 4 | <$5M | Research |
| Kurz Family Investments, LLC | Retail Trade | $33,449 | $33,709 | 10 | <$5M | Research |
| Ab Tree Injection and Land Service INC | Administrative and Support and Waste Management | $32,200 | $32,370 | 4 | <$5M | Research |
| O.t. Sports Bar & Grill, LLC | Accommodation and Food Services | $30,958 | $31,162 | 5 | <$5M | Research |
| Fullerton Livestock Market, INC | Wholesale Trade | $30,639 | $30,599 | 20 | $5.1M | Research |
| Donn Smith | Agriculture, Forestry, Fishing and Hunting | $27,355 | $27,480 | 5 | <$5M | Research |