| Chapman Corporation | Construction | $8,930,463 | $8,990,247 | 404 | $460.3M |  Research |
| Sssi, INC | Construction | $8,498,100 | $7,668,584 | 484 | $150.0M | Research |
| Pathways of Southwestern Pennsylvania INC | Health Care and Social Assistance | $4,219,850 | $4,251,733 | 500 | $81.0M | Research |
| Trpil Community Services | Other Services (except Public Administration) | $3,087,360 | $3,111,298 | 500 | $95.5M | Research |
| Fairmont Supply Company, Inc. | Wholesale Trade | $2,078,100 | $2,105,115 | 79 | $24.9M | Research |
| Presbyterian Medical Center of Washington | Health Care and Social Assistance | $1,779,605 | $1,799,131 | 223 | N/A | Research |
| Washington Administrative Services INC | Professional, Scientific, and Technical Services | $1,771,617 | $1,783,674 | 70 | $8.6M | Research |
| Washington Apa Nmb, LLC | Retail Trade | $1,671,640 | $1,685,663 | 117 | $29.5M | Research |
| Veltri Trucking INC | Transportation and Warehousing | $1,612,198 | $1,631,721 | 174 | $46.5M | Research |
| Budd Baer INC | Retail Trade | $1,602,517 | $1,612,571 | 145 | $36.5M | Research |
| R G Johnson Company, Inc. | Mining, Quarrying, and Oil and Gas Extraction | $1,513,300 | $1,524,818 | 110 | $6.7M | Research |
| Lincoln Manufacturing Inc. | Manufacturing | $1,387,870 | $1,396,007 | 88 | $21.5M | Research |
| Lincoln Manufacturing, Inc. | Manufacturing | $1,387,870 | $1,402,053 | 86 | $21.0M | Research |
| Precision Industries, Inc. DBA Precision Marshall | Manufacturing | $1,382,500 | $1,393,446 | 78 | $20.4M | Research |
| Washington Ford Company | Retail Trade | $1,379,200 | $1,310,829 | 77 | $19.4M | Research |
| Washington Ford INC | Retail Trade | $1,295,180 | $1,305,218 | 77 | $19.4M | Research |
| Transitions Healthcare Washington Pa, LLC | Health Care and Social Assistance | $1,211,203 | $1,225,132 | 163 | $27.7M | Research |
| Ten Mile Paving LLC | Construction | $1,210,800 | $1,225,661 | 66 | $20.5M | Research |
| Compressed Air Specialists Company | Wholesale Trade | $1,018,900 | $998,292 | 67 | $20.5M | Research |
| Ten Mile Paving, LLC | Construction | $995,000 | $1,228,149 | 89 | $27.6M | Research |
| Compressed Air Specialists Co | Wholesale Trade | $991,950 | $998,563 | 66 | $20.2M | Research |
| The Decuir Group Inc. | Retail Trade | $983,296 | $918,171 | 70 | $17.6M | Research |
| The Physical Therapy Institute, Inc. | Health Care and Social Assistance | $951,250 | $961,687 | 98 | $26.5M | Research |
| The Physical Therapy Institute Inc. | Health Care and Social Assistance | $950,980 | $961,203 | 98 | $26.5M | Research |
| Bluestar USA INC | Construction | $888,846 | $897,191 | 40 | $12.4M | Research |