| A Fischer Builders, Inc. | 17 | $9,269 | Aug 13, 2021 |
| Adams County Highway Department | 12 | $0 | Jun 2, 2026 |
| Agco Recycling, LLC | 24 | $20,774 | Feb 15, 2024 |
| B-Ball Corp | 5 | $5,250 | Mar 6, 2015 |
| Bath and Body Works, LLC | 3 | $10,100 | Dec 13, 2016 |
| Boulder Construction, L.L.C. | 6 | $16,456 | Oct 8, 2024 |
| Brown Electric, Inc. | 9 | $18,594 | Apr 20, 2023 |
| Clean Air Filters, Inc. | 2 | $4,775 | Jan 9, 2019 |
| Cornerstone Detention Products | 2 | $8,051 | Sep 11, 2019 |
| County Contractors, Inc. | 2 | $3,277 | Jun 23, 2021 |
| Craig Industries, Inc. | 2 | $5,850 | Aug 9, 2019 |
| Doyle Equipment Manufacturing Co. | 43 | $45,585 | Jan 6, 2017 |
| Dte, Inc. of Quincy | 2 | $8,000 | Jul 30, 2016 |
| Eric Green Construction Inc. | 4 | $2,400 | May 19, 2015 |
| Extreme Exterior Pros, Inc. | 2 | $1,400 | Oct 1, 2015 |
| Fierge Auto Parts Company | 7 | $11,250 | Oct 25, 2022 |
| Food Service Direct Logistics, LLC | 1 | $368 | Dec 23, 2019 |
| Gilmer Township Road Dept | 4 | $0 | Sep 17, 2024 |
| Glass 1 One LLC | 2 | $5,500 | May 30, 2024 |
| Greenmount Cemetery Association | 8 | $8,512 | Feb 20, 2025 |
| Heimer Construction Company, Inc. | 18 | $8,650 | Jan 26, 2015 |
| Hollister-Whitney Elevator Co, LLC | 32 | $49,766 | Jan 29, 2026 |
| HY-Vee Inc. | 19 | $38,693 | Jul 29, 2026 |
| IL Dept. of Veterans' Affairs - Quincy Veterans' Home | 2 | $0 | Jun 20, 2023 |
| J & N Construction General Contractors Inc. | 7 | $4,000 | Jun 29, 2017 |
| Jeff Delonjay | 4 | $2,000 | Apr 14, 2016 |
| Jeff Stupavsky | 7 | $12,100 | Apr 8, 2016 |
| Jim Pruitt Masonry | 6 | $3,200 | Jun 17, 2015 |
| Kevin Hamann Construction, Inc. | 2 | $4,688 | Oct 5, 2023 |
| Maas Construction, Inc. | 15 | $9,342 | Nov 26, 2019 |
| Matt Holtmeyer Construction, Inc. | 15 | $7,000 | Mar 12, 2015 |
| Michael Entrup | 2 | $2,800 | Nov 3, 2015 |
| Michelmann Steel Construction Company | 21 | $10,050 | Jun 12, 2018 |
| Midwest Controlled Storage, LLC | 1 | $5,469 | Jan 11, 2023 |
| National Management Resources Corporation | 6 | $16,981 | May 16, 2018 |
| Neil Oil Co., Inc. | 4 | $15,000 | Mar 9, 2016 |
| Niemann Foods, Inc. | 11 | $30,601 | Sep 10, 2019 |
| Niemann Roofing, LLC | 5 | $4,000 | Oct 1, 2015 |
| Outdoor Power Inc. | 8 | $7,500 | Jun 17, 2025 |
| Petco Animal Supplies Inc. | 4 | $7,000 | Jan 16, 2015 |
| Peters Heating and Air Conditioning, Inc. | 13 | $16,732 | Apr 7, 2022 |
| Prince Minerals LLC | 1 | $6,164 | Dec 7, 2021 |
| Q Ill Development, LLC | 1 | $0 | Feb 25, 2021 |
| Quincy Industrial Painting Co., Inc. | 10 | $5,255 | Oct 3, 2023 |
| Quincy Petroleum Manufacturing | 3 | $11,770 | Aug 3, 2017 |
| Rack Builders, Inc. | 12 | $39,432 | Sep 9, 2025 |
| Reeves Reliable Construction | 2 | $1,400 | Jan 22, 2015 |
| Royalty Electric, LLC | 1 | $2,650 | Nov 26, 2019 |
| RP&G Inc. | 11 | $17,000 | Nov 3, 2016 |
| RP&G of Quincy, Inc. | 16 | $14,757 | May 2, 2018 |
| Schlipman Construction, Inc. | 31 | $13,250 | Jul 21, 2015 |
| Sem Minerals, Inc. | 2 | $3,829 | Mar 7, 2022 |
| Sem Minerals, L.P. | 6 | $28,344 | May 29, 2025 |
| Shortridge Construction Company, Inc. | 10 | $10,009 | May 31, 2022 |
| The Knapheide Manufacturing Company | 15 | $56,947 | Aug 13, 2021 |
| Tim Zanger | 5 | $2,800 | May 18, 2016 |
| Titan Wheel Corporation of Illinois | 36 | $51,225 | Nov 25, 2024 |
| Tournear Roofing Co. | 1 | $2,074 | May 30, 2024 |
| Triple T. Tech, Inc. | 8 | $0 | May 30, 2018 |
| W.C. Holzgrafe Construction Co. | 8 | $2,000 | May 19, 2016 |
| Warners' DRY Cleaning & Shirt Service, Inc. | 7 | $0 | Dec 27, 2018 |
| Water Works of Quincy, Inc. | 7 | $4,091 | Dec 20, 2018 |
| Waterkotte Construction, Inc. | 6 | $3,337 | May 30, 2018 |
| Wood Mart Building Center, Inc. | 3 | $3,984 | Apr 6, 2017 |