Year	Employer	Vendor Name	Amount	Source
2019	State Board Of Education	Plainfield School Dist 202	$111,622,454.76	Illinois State Checkbook
2021	Healthcare & Family Services	Ann & Robert H Lurie Childrens	$111,206,788.59	Illinois State Checkbook
2021	State Board Of Education	Board Of Education City Of	$111,067,067.16	Illinois State Checkbook
2021	Il State Toll Highway Auth	Walsh Construction Co Ii Llc	$110,876,111.28	Illinois State Checkbook
2022	Human Services	Citizens Alliance Bank	$110,329,979.07	Illinois State Checkbook
2022	Healthcare & Family Services	University Of Chicago Hospital	$110,230,989.30	Illinois State Checkbook
2018	Revenue	Dupage County Treasurer	$109,915,064.86	Illinois State Checkbook
2022	State Board Of Education	Community Unit School Dist 308	$109,845,965.99	Illinois State Checkbook
2017	Revenue	Dupage County Treasurer	$109,833,853.99	Illinois State Checkbook
2019	State Board Of Education	Joliet Public Schools Dist 86	$109,138,124.31	Illinois State Checkbook
2021	Transportation	Lorig Construction Company	$108,866,252.75	Illinois State Checkbook
2017	Transportation	D Construction Inc	$108,764,290.28	Illinois State Checkbook
2018	Healthcare & Family Services	Humana Health Plan Inc	$108,633,335.24	Illinois State Checkbook
2020	Il State Toll Highway Auth	Fh Paschen S N Nielsen &	$107,783,334.70	Illinois State Checkbook
2018	State Board Of Education	Worth Twp Trustees Of Schools	$107,752,130.38	Illinois State Checkbook
2022	Revenue	Will County Treasurer	$107,412,318.86	Illinois State Checkbook
2023	Transportation	E T Simonds Construction Co	$107,409,646.69	Illinois State Checkbook
2018	State Board Of Education	Plainfield School Dist 202	$107,194,179.42	Illinois State Checkbook
2019	Commerce And Economic Opportun	Community & Ecnmc Dev Assn	$105,984,837.90	Illinois State Checkbook
2017	Transportation	Siemens Industry Inc	$105,746,930.79	Illinois State Checkbook
2018	Transportation	United Contractors Midwest Inc	$105,474,777.02	Illinois State Checkbook
2022	State Board Of Education	Community Unit School Dist 300	$105,453,417.45	Illinois State Checkbook
2022	Transportation	Chicago City Of	$105,210,584.63	Illinois State Checkbook
2021	Healthcare & Family Services	University Of Chicago Hospital	$105,145,526.01	Illinois State Checkbook
2021	State Board Of Education	Lyons Twp School Treasurer	$104,999,076.61	Illinois State Checkbook
2018	State Board Of Education	Joliet Public Schools Dist 86	$104,594,546.13	Illinois State Checkbook
2019	Transportation	United Contractors Midwest Inc	$104,351,682.54	Illinois State Checkbook
2021	Environmental Protect Agency	Chicago City Of	$104,019,135.40	Illinois State Checkbook
2017	Transportation	Cook County	$103,910,896.04	Illinois State Checkbook
2017	Healthcare & Family Services	Walgreens Company	$103,710,098.59	Illinois State Checkbook
2018	Transportation	Cook County	$103,323,203.71	Illinois State Checkbook
2020	Commerce And Economic Opportun	Community & Ecnmc Dev Assn	$102,692,270.73	Illinois State Checkbook
2023	State Board Of Education	Cook County High School Dist	$102,127,039.32	Illinois State Checkbook
2023	Human Services	Illinois Dept Of Human Svcs	$102,010,000.00	Illinois State Checkbook
2023	Healthcare & Family Services	Ann & Robert H Lurie Childrens	$101,991,548.45	Illinois State Checkbook
2023	State Board Of Education	Round Lake Area Schools Distri	$101,354,400.12	Illinois State Checkbook
2018	Healthcare & Family Services	Ann & Robert H Lurie Childrens	$100,782,407.64	Illinois State Checkbook
2021	Employment Security	Illinois Dept Employmnt Sec	$100,019,550.00	Illinois State Checkbook
2018	Healthcare & Family Services	Hfs Healthcare Provider Relief	$100,000,000.00	Illinois State Checkbook
2021	State Board Of Education	Board Of Educatn Schl Dist 189	$99,992,019.87	Illinois State Checkbook
2018	Transportation	D Construction Inc	$99,983,098.21	Illinois State Checkbook
2021	Revenue	Springfield City Treasurer	$99,336,900.80	Illinois State Checkbook
2023	Revenue	Naperville City Treasurer	$99,164,826.90	Illinois State Checkbook
2023	Commerce And Economic Opportun	Illinois Dept Of Commerce &	$99,158,658.68	Illinois State Checkbook
2022	State Board Of Education	Board Of Educatn Schl Dist 189	$99,145,560.97	Illinois State Checkbook
2020	Central Management	Tristar Risk Enterprise Mgt	$98,979,500.00	Illinois State Checkbook
2020	State Board Of Education	Lyons Twp School Treasurer	$98,877,210.00	Illinois State Checkbook
2022	Environmental Protect Agency	Illinois Envrnmntl Prot Agency	$98,869,145.56	Illinois State Checkbook
2021	Human Services	Citizens Alliance Bank	$98,837,565.43	Illinois State Checkbook
2019	Secretary Of State	International Registration	$98,160,792.13	Illinois State Checkbook
2023	Revenue	Joliet City Treasurer	$98,124,800.99	Illinois State Checkbook
2023	Revenue	Aurora City Treasurer	$97,672,236.15	Illinois State Checkbook
2023	Transportation	Iroquois Paving Corp	$97,400,253.78	Illinois State Checkbook
2018	Transportation	Chicago City Of	$97,207,138.21	Illinois State Checkbook
2022	Revenue	Aurora City Treasurer	$97,175,050.45	Illinois State Checkbook
2022	State Board Of Education	Cook County High School Dist	$96,722,662.38	Illinois State Checkbook
2021	State Board Of Education	Decatur Public School Dist 61	$96,053,492.26	Illinois State Checkbook
2021	State Board Of Education	Community Unit School Dist 308	$95,901,944.20	Illinois State Checkbook
2019	Transportation	D Construction Inc	$95,673,804.20	Illinois State Checkbook
2022	Central Management	Tristar Risk Enterprise Mgt	$95,545,500.00	Illinois State Checkbook
2022	Revenue	Joliet City Treasurer	$95,374,463.81	Illinois State Checkbook
2022	Revenue	Naperville City Treasurer	$95,323,676.24	Illinois State Checkbook
2023	State Board Of Education	Board Of Educatn Schl Dist 189	$95,128,205.32	Illinois State Checkbook
2017	State Lottery	Treasurer Office Of	$95,122,617.80	Illinois State Checkbook
2019	Healthcare & Family Services	University Of Chicago Hospital	$94,792,357.28	Illinois State Checkbook
2017	Commerce And Economic Opportun	Community & Ecnmc Dev Assn	$94,556,313.54	Illinois State Checkbook
2020	Revenue	Springfield City Treasurer	$94,511,210.98	Illinois State Checkbook
2017	State Board Of Education	Township 36 North Range 13 E	$94,322,249.07	Illinois State Checkbook
2020	State Board Of Education	Board Of Education City Of	$94,101,419.90	Illinois State Checkbook
2022	State Board Of Education	Valley View Public Schools	$93,864,237.23	Illinois State Checkbook
2023	Human Services	Favorite Healthcare Staffing	$93,746,792.20	Illinois State Checkbook
2018	Healthcare & Family Services	Saint Francis Medical Center	$93,565,413.72	Illinois State Checkbook
2020	State Board Of Education	Community Unit School Dist 308	$93,537,456.73	Illinois State Checkbook
2023	State Board Of Education	Valley View Public Schools	$93,248,075.16	Illinois State Checkbook
2023	Capital Development Board	Veterans United Constructors	$93,200,132.57	Illinois State Checkbook
2017	State Board Of Education	Plainfield School Dist 202	$92,572,222.92	Illinois State Checkbook
2018	Central Management	Tristar Risk Enterprise Mgt	$92,540,000.00	Illinois State Checkbook
2017	Secretary Of State	International Registration	$92,458,511.82	Illinois State Checkbook
2023	State Board Of Education	Decatur Public School Dist 61	$91,990,325.08	Illinois State Checkbook
2019	Revenue	Springfield City Treasurer	$91,946,032.99	Illinois State Checkbook
2022	State Lottery	Treasurer Office Of	$91,618,034.88	Illinois State Checkbook
2018	Commerce And Economic Opportun	Community & Ecnmc Dev Assn	$91,454,952.87	Illinois State Checkbook
2021	State Board Of Education	Community Unit School Dist 300	$91,279,237.18	Illinois State Checkbook
2017	State Board Of Education	Joliet Public Schools Dist 86	$91,223,768.76	Illinois State Checkbook
2019	Transportation	Cook County	$90,996,717.66	Illinois State Checkbook
2018	Transportation	Siemens Industry Inc	$90,815,966.85	Illinois State Checkbook
2018	Secretary Of State	International Registration	$90,552,016.54	Illinois State Checkbook
2019	Healthcare & Family Services	Ann & Robert H Lurie Childrens	$90,483,815.51	Illinois State Checkbook
2021	State Board Of Education	Thornton Fractional Twp School	$90,109,226.96	Illinois State Checkbook
2021	Il Emergency Management Agcy	Cook County	$89,882,857.28	Illinois State Checkbook
2017	State Lottery	Northstar Lottery Group Llc	$89,607,228.16	Illinois State Checkbook
2022	State Board Of Education	Round Lake Area Schools Distri	$89,418,623.69	Illinois State Checkbook
2017	State Board Of Education	Worth Twp Trustees Of Schools	$89,299,538.49	Illinois State Checkbook
2019	State Board Of Education	Lyons Twp School Treasurer	$89,141,961.81	Illinois State Checkbook
2023	Revenue	Winnebago County Treasurer Off	$89,052,437.32	Illinois State Checkbook
2021	Revenue	Will County Treasurer	$88,963,362.52	Illinois State Checkbook
2020	State Board Of Education	Board Of Educatn Schl Dist 189	$88,691,500.37	Illinois State Checkbook
2022	Comptroller	Healthcare And Family Services	$88,674,508.58	Illinois State Checkbook
2022	State Board Of Education	Decatur Public School Dist 61	$88,476,171.51	Illinois State Checkbook
2019	Il Student Assistance Comm	University Of Illinois	$87,963,786.32	Illinois State Checkbook