Year	Employer	Vendor Name	Amount	Source
2021	Revenue	Decatur City Treasurer	$38,443,967.01	Illinois State Checkbook
2020	State Board Of Education	Alton Comm Unit School Dist	$38,442,644.04	Illinois State Checkbook
2022	Revenue	Evanston Finance Director	$38,442,252.73	Illinois State Checkbook
2020	Revenue	Mount Prospect Village Treasur	$38,413,281.85	Illinois State Checkbook
2023	Revenue	Tinley Park Village Treasurer	$38,383,652.98	Illinois State Checkbook
2020	Revenue	Orland Park Village Treasurer	$38,340,834.36	Illinois State Checkbook
2019	Revenue	Skokie Village Treasurer	$38,320,616.17	Illinois State Checkbook
2022	State Board Of Education	County Of Cook School Dist 98	$38,302,095.48	Illinois State Checkbook
2021	Revenue	Mchenry County Treasurer	$38,217,652.53	Illinois State Checkbook
2019	Il State Toll Highway Auth	William Charles Constrctn Llc	$38,189,681.25	Illinois State Checkbook
2023	State Board Of Education	Quincy Public Schools	$38,162,989.03	Illinois State Checkbook
2022	State Board Of Education	Stickney Township School Treas	$38,121,790.99	Illinois State Checkbook
2019	Transportation	The Kilian Corporation	$38,078,058.02	Illinois State Checkbook
2021	Transportation	Civil Constructors Inc Of Il	$38,037,738.00	Illinois State Checkbook
2020	Revenue	Skokie Village Treasurer	$38,011,220.00	Illinois State Checkbook
2019	Revenue	Orland Park Village Treasurer	$37,979,122.73	Illinois State Checkbook
2021	Transportation	Rush Truck Ctrs Of	$37,902,625.65	Illinois State Checkbook
2019	State Board Of Education	Dekalb Community Unit School	$37,846,620.40	Illinois State Checkbook
2017	Transportation	William Charles Constrctn Llc	$37,844,992.39	Illinois State Checkbook
2023	Innovation And Technology	At & T Corp	$37,834,100.24	Illinois State Checkbook
2017	Healthcare & Family Services	St Johns Hospital Sisters Of	$37,800,899.69	Illinois State Checkbook
2018	Healthcare & Family Services	Advocate Northside	$37,773,178.81	Illinois State Checkbook
2023	State Board Of Education	County Of Cook School Dist 98	$37,643,484.94	Illinois State Checkbook
2017	Environmental Protect Agency	Illinois Envrnmntl Prot Agency	$37,640,420.00	Illinois State Checkbook
2018	Environmental Protect Agency	City Of Joliet	$37,630,938.94	Illinois State Checkbook
2019	Il State Toll Highway Auth	Fh Paschen S N Nielsen &	$37,607,002.73	Illinois State Checkbook
2020	Il Emergency Management Agcy	Chicago City Of	$37,584,101.70	Illinois State Checkbook
2021	Transportation	Lake County	$37,559,483.94	Illinois State Checkbook
2023	Revenue	Oak Lawn Village Treasurer	$37,550,560.22	Illinois State Checkbook
2018	Healthcare & Family Services	Northshore University Health	$37,528,061.16	Illinois State Checkbook
2023	Transportation	Baxmeyer Excavating Inc	$37,493,687.37	Illinois State Checkbook
2018	State Board Of Education	North Chicago School District	$37,473,280.19	Illinois State Checkbook
2022	Il State Toll Highway Auth	Dunnet Bay Construction Co	$37,459,187.35	Illinois State Checkbook
2022	Environmental Protect Agency	Metropolitan Water Reclamation	$37,445,400.00	Illinois State Checkbook
2021	Healthcare & Family Services	Hoosier Care Inc	$37,443,132.21	Illinois State Checkbook
2023	Healthcare & Family Services	Hoosier Care Inc	$37,423,894.47	Illinois State Checkbook
2022	Transportation	Stark Excavating Inc	$37,371,592.19	Illinois State Checkbook
2022	State Board Of Education	Board Of Education S D 100	$37,361,773.43	Illinois State Checkbook
2020	State Board Of Education	Collinsville Community Unit	$37,360,211.20	Illinois State Checkbook
2022	Revenue	Elk Grove Village Treasurer	$37,338,713.49	Illinois State Checkbook
2023	Il Student Assistance Comm	Northern Illinois University	$37,309,440.21	Illinois State Checkbook
2020	Healthcare & Family Services	Deloitte Consulting Llp	$37,281,077.11	Illinois State Checkbook
2018	Revenue	Illinois Housing Dev Authority	$37,276,345.61	Illinois State Checkbook
2023	Transportation	Iowa Dept Of Transportation	$37,269,680.08	Illinois State Checkbook
2022	Healthcare & Family Services	Hoosier Care Inc	$37,238,108.30	Illinois State Checkbook
2019	Revenue	Mount Prospect Village Treasur	$37,234,007.96	Illinois State Checkbook
2021	Revenue	Glenview Village Treasurer	$37,225,136.89	Illinois State Checkbook
2017	State Board Of Education	Cahokia Comm School Dist 187	$37,163,516.94	Illinois State Checkbook
2017	Transportation	R W Dunteman Company	$37,150,105.96	Illinois State Checkbook
2023	Human Services	The Thresholds	$37,134,256.21	Illinois State Checkbook
2022	Healthcare & Family Services	Dentaquest Group Inc	$37,131,037.22	Illinois State Checkbook
2023	Revenue	Des Plaines City Treasurer	$37,122,583.36	Illinois State Checkbook
2017	Revenue	Orland Park Village Treasurer	$37,097,581.68	Illinois State Checkbook
2021	State Board Of Education	Champaign Comm Schl Dist No 4	$37,087,238.65	Illinois State Checkbook
2021	State Board Of Education	Huntley Community School	$37,053,397.22	Illinois State Checkbook
2021	State Board Of Education	West Chicago School Dist 33	$36,996,571.36	Illinois State Checkbook
2017	State Board Of Education	Maine Twp School Treasurer	$36,974,031.38	Illinois State Checkbook
2023	Il Emergency Management Agcy	Cook County	$36,973,750.63	Illinois State Checkbook
2022	State Board Of Education	Belleville School District 118	$36,906,893.09	Illinois State Checkbook
2019	University Of Illinois	University Of Illinois	$36,852,784.91	Illinois State Checkbook
2020	Healthcare & Family Services	Hoosier Care Inc	$36,838,615.45	Illinois State Checkbook
2020	Transportation	Meade Inc	$36,830,979.71	Illinois State Checkbook
2022	Innovation And Technology	Carahsoft Technology Corp	$36,786,168.77	Illinois State Checkbook
2018	Revenue	Orland Park Village Treasurer	$36,759,472.93	Illinois State Checkbook
2022	Innovation And Technology	Ibm Corporation	$36,721,399.58	Illinois State Checkbook
2021	Healthcare & Family Services	Northshore University Health	$36,682,198.49	Illinois State Checkbook
2019	Environmental Protect Agency	City Of Joliet	$36,672,151.79	Illinois State Checkbook
2020	Transportation	Kankakee Vly Cnstrctn Co Inc	$36,657,504.39	Illinois State Checkbook
2022	Revenue	Tinley Park Village Treasurer	$36,619,098.36	Illinois State Checkbook
2023	State Board Of Education	Comm Cons School District 15	$36,460,488.60	Illinois State Checkbook
2023	Revenue	Downers Grove Village Treasure	$36,412,374.06	Illinois State Checkbook
2022	Il State Toll Highway Auth	Toll Highway Authority	$36,406,037.32	Illinois State Checkbook
2019	State Board Of Education	Rock Island School Dstrct #41	$36,400,609.29	Illinois State Checkbook
2021	Il State Toll Highway Auth	Commonwealth Edison Company	$36,373,828.13	Illinois State Checkbook
2023	Transportation	Stark Excavating Inc	$36,368,797.93	Illinois State Checkbook
2023	Revenue	Addison Village Treasurer	$36,316,498.19	Illinois State Checkbook
2022	Innovation And Technology	Dell Marketing Lp	$36,252,584.32	Illinois State Checkbook
2018	Revenue	Metrpltn Water Rclm Dist Of Ch	$36,241,146.07	Illinois State Checkbook
2022	State Employees' Retire System	Treasurer Office Of	$36,171,258.57	Illinois State Checkbook
2020	Transportation	Walsh Construction Co Ii Llc	$35,978,485.72	Illinois State Checkbook
2022	State Board Of Education	Community Unit District No 203	$35,899,682.57	Illinois State Checkbook
2021	Revenue	Normal Town Treasurer	$35,889,782.68	Illinois State Checkbook
2018	Environmental Protect Agency	Illinois Envrnmntl Prot Agency	$35,885,778.05	Illinois State Checkbook
2018	Healthcare & Family Services	Presence Saints Mary And	$35,867,531.37	Illinois State Checkbook
2017	State Board Of Education	Belvidere Community Unit	$35,838,737.38	Illinois State Checkbook
2017	Transportation	Ihc Construction Companies Llc	$35,829,842.48	Illinois State Checkbook
2019	Revenue	Mchenry County Treasurer	$35,826,331.09	Illinois State Checkbook
2022	Revenue	Oak Lawn Village Treasurer	$35,802,835.01	Illinois State Checkbook
2023	State Employees' Retire System	Treasurer Office Of	$35,795,373.30	Illinois State Checkbook
2023	Human Services	Misericordia Home	$35,776,819.28	Illinois State Checkbook
2023	State Board Of Education	Stickney Township School Treas	$35,766,803.20	Illinois State Checkbook
2023	Human Services	Illinois Student Assstnce Comm	$35,762,477.19	Illinois State Checkbook
2020	Environmental Protect Agency	City Of Joliet	$35,710,907.72	Illinois State Checkbook
2022	Revenue	Downers Grove Village Treasure	$35,678,603.06	Illinois State Checkbook
2018	State Board Of Education	Granite City Cusd 9	$35,670,100.53	Illinois State Checkbook
2020	Transportation	Iowa Dept Of Transportation	$35,666,609.50	Illinois State Checkbook
2023	Il Student Assistance Comm	Southern Illinois University	$35,635,734.85	Illinois State Checkbook
2021	Revenue	Skokie Village Treasurer	$35,612,951.14	Illinois State Checkbook
2023	State Board Of Education	Belleville Township High	$35,593,057.54	Illinois State Checkbook
2020	State Board Of Education	West Chicago School Dist 33	$35,591,186.50	Illinois State Checkbook