| Mercer Fraser Company | Mining, Quarrying, and Oil and Gas Extraction | $6,655,600 | $2,696,407 | 90 | $5.5M |  Research |
| George Petersen Insurance Agency Inc. | Finance and Insurance | $2,785,000 | $2,817,123 | 180 | $92.5M | Research |
| Shn Consulting Engineers & Geologists INC | Professional, Scientific, and Technical Services | $1,441,200 | $1,450,928 | 100 | $12.3M | Research |
| Humboldt Fuels Inc. | Retail Trade | $1,344,600 | $1,355,209 | 163 | $39.0M | Research |
| Klair Management Enterprises Inc. | Accommodation and Food Services | $1,329,600 | $1,342,277 | 429 | $76.2M | Research |
| Hospice of Humboldt | Health Care and Social Assistance | $1,242,000 | $1,249,694 | 99 | $16.8M | Research |
| Laco Associates | Professional, Scientific, and Technical Services | $1,158,000 | $1,169,741 | 65 | $8.0M | Research |
| Laco Associates, Inc. | Professional, Scientific, and Technical Services | $1,158,000 | $1,165,931 | 77 | $9.5M | Research |
| Changing Tides Family Services | Other Services (except Public Administration) | $976,800 | $988,495 | 166 | N/A | Research |
| Wahlund Construction, Inc. | Construction | $969,700 | $979,610 | 35 | $10.8M | Research |
| Humboldt Senior Resource Center, Incorporated | Health Care and Social Assistance | $949,800 | $955,915 | 139 | N/A | Research |
| Ernest Pierson Co | Retail Trade | $931,000 | $940,463 | 93 | $19.2M | Research |
| Table Bluff Brewing, Inc. | Manufacturing | $847,300 | $853,312 | 99 | $34.9M | Research |
| Frontier Motors | Retail Trade | $807,075 | $815,056 | 64 | $16.1M | Research |
| Harvey M Harper Company | Retail Trade | $784,000 | $790,424 | 63 | $15.9M | Research |
| Redwood Community Action Agency | Health Care and Social Assistance | $775,000 | $649,707 | 84 | N/A | Research |
| Wahlund Construction INC | Construction | $764,300 | $771,433 | 36 | $11.2M | Research |
| Redwood Community Action Agency | Health Care and Social Assistance | $728,590 | $734,738 | 72 | N/A | Research |
| Robert Colburn Electric INC | Construction | $706,800 | $716,087 | 30 | $9.9M | Research |
| Robert Colburn Electric INC | Construction | $706,800 | $716,244 | 31 | $10.2M | Research |
| Eureka Oxygen Company, Inc. | Retail Trade | $639,500 | $646,631 | 47 | $7.3M | Research |
| Cloney's Pharmacy, Inc. | Retail Trade | $635,801 | $640,110 | 56 | $9.8M | Research |
| Table Bluff Brewing Inc. | Manufacturing | $627,620 | $636,114 | 99 | $34.9M | Research |
| Mccrea Motors | Retail Trade | $617,525 | $623,802 | 41 | $10.3M | Research |
| Eureka Natural Foods | Retail Trade | $603,759 | $608,672 | 79 | $19.7M | Research |