| Star Line Mackinac Island Ferry Service, Inc. | Transportation and Warehousing | $726,898 | $735,322 | 30 | $7.6M |  Research |
| Mackinac Island Ferry Company | Transportation and Warehousing | $623,750 | $627,646 | 33 | $8.4M | Research |
| Tsi Company Inc. | Accommodation and Food Services | $487,915 | $491,658 | 125 | $22.2M | Research |
| Helmer Associates | Accommodation and Food Services | $469,030 | $472,965 | 39 | $12.2M | Research |
| Helmer Associates | Accommodation and Food Services | $335,022 | $337,600 | 78 | $24.4M | Research |
| Varsity Catering Company Inc. | Accommodation and Food Services | $300,908 | $304,937 | 31 | $5.5M | Research |
| Driftwood Hospitality INC | Accommodation and Food Services | $293,418 | $297,355 | 43 | $7.6M | Research |
| Tdh & Associates, Inc. | Accommodation and Food Services | $238,400 | $240,407 | 48 | $15.0M | Research |
| V.i. of St Ignace INC | Accommodation and Food Services | $142,534 | $143,659 | 30 | $9.4M | Research |
| Tdh & Assoc INC | Accommodation and Food Services | $136,100 | $0 | 33 | $10.3M | Research |
| Jose's Cantina, LLC | Accommodation and Food Services | $131,084 | $131,859 | 9 | <$5M | Research |
| Maurer Publishing LLC | Information | $131,056 | $131,591 | 14 | <$5M | Research |
| Paquin Family LLC | Accommodation and Food Services | $122,679 | $123,405 | 15 | <$5M | Research |
| St Ignace Resorts LLC | Accommodation and Food Services | $121,000 | $121,885 | 49 | $15.3M | Research |
| George's Body Shop Inc. | Other Services (except Public Administration) | $119,662 | $120,184 | 11 | <$5M | Research |
| Grand Traverse Appraisal & Consultant Inc. | Professional, Scientific, and Technical Services | $113,100 | $113,515 | 9 | <$5M | Research |
| Paquin Holdings LLC | Construction | $110,000 | $110,523 | 14 | <$5M | Research |
| V.i. of St Ignace, INC | Accommodation and Food Services | $101,810 | $103,023 | 7 | <$5M | Research |
| St. Ignace Hotel Inc. | Accommodation and Food Services | $97,273 | $97,979 | 19 | $5.9M | Research |
| Mackinac Island Freight Company LLC | Transportation and Warehousing | $95,968 | $96,825 | 15 | <$5M | Research |
| Varsity Catering Co. Inc. | Retail Trade | $90,700 | $91,411 | 69 | $10.8M | Research |
| Grand Traverse Appraisal & Consulting, Inc. | Real Estate and Rental and Leasing | $88,331 | $88,746 | 10 | <$5M | Research |
| Mitchell James Management LLC | Health Care and Social Assistance | $86,300 | $87,019 | 14 | <$5M | Research |
| Jose's Cantina, LLC | Accommodation and Food Services | $83,990 | $84,832 | 13 | <$5M | Research |
| St Ignace Hotels LLC | Accommodation and Food Services | $82,800 | $83,494 | 20 | $6.3M | Research |