Year	Employer	Vendor Name	Amount	Source
2022	State Board Of Education	Bensenville Elementary Schl	$9,323,528.74	Illinois State Checkbook
2021	Revenue	Wilmette Village Treasurer	$9,323,218.65	Illinois State Checkbook
2018	State Board Of Education	Illinois State University	$9,320,497.59	Illinois State Checkbook
2024	Transportation	Hanson Professional Svcs Inc	$9,319,464.25	Illinois State Checkbook
2017	Healthcare & Family Services	State Of Michigan Dept Of	$9,318,906.62	Illinois State Checkbook
2020	State Board Of Education	Genoa Kingston Community Unit	$9,317,521.82	Illinois State Checkbook
2025	Revenue	Lansing Vilalge Treasurer	$9,315,923.30	Illinois State Checkbook
2024	State Board Of Education	Meridian Community Unit Dist	$9,312,614.88	Illinois State Checkbook
2020	Environmental Protect Agency	City Of Elmhurst	$9,312,365.49	Illinois State Checkbook
2025	Commerce And Economic Opportun	Tazwood Community Services Inc	$9,310,789.00	Illinois State Checkbook
2020	State Board Of Education	United Township High School	$9,310,437.74	Illinois State Checkbook
2017	Revenue	Glen Ellyn Village Treasurer	$9,310,380.59	Illinois State Checkbook
2021	Transportation	J A Johnson Paving	$9,309,441.01	Illinois State Checkbook
2023	State Board Of Education	Schiller Park School Dist 81	$9,308,543.12	Illinois State Checkbook
2018	Revenue	Burbank City Treasurer	$9,308,117.08	Illinois State Checkbook
2025	State Board Of Education	Community Unit District No 3	$9,306,477.25	Illinois State Checkbook
2025	Transportation	R S & H Inc	$9,304,438.66	Illinois State Checkbook
2020	Human Services	Southern Illinois Living Ctrs	$9,302,465.14	Illinois State Checkbook
2017	Transportation	Hntb Corp	$9,300,941.33	Illinois State Checkbook
2025	Revenue	Monee Village Treasurer	$9,299,855.43	Illinois State Checkbook
2024	State Board Of Education	Community High School Dist 99	$9,298,992.01	Illinois State Checkbook
2025	Transportation	Gallagher Asphalt Corporation	$9,298,331.68	Illinois State Checkbook
2023	Transportation	Brandt Construction Co Inc	$9,297,885.50	Illinois State Checkbook
2022	State Board Of Education	Grant Community High School	$9,297,717.65	Illinois State Checkbook
2018	Healthcare & Family Services	Aeries Healthcare Of Illinois	$9,293,807.70	Illinois State Checkbook
2021	Human Services	Human Resources Dev Inst Inc	$9,291,957.05	Illinois State Checkbook
2024	Capital Development Board	Fager Mcgee Cmmrcial Const Inc	$9,290,891.13	Illinois State Checkbook
2021	Transportation	Dekalb County	$9,290,478.85	Illinois State Checkbook
2025	Commerce And Economic Opportun	Community Contacts Inc	$9,287,539.53	Illinois State Checkbook
2024	Human Services	Childrens Home & Aid Society	$9,287,472.61	Illinois State Checkbook
2023	Revenue	Macomb City Treasurer	$9,287,329.94	Illinois State Checkbook
2025	State Board Of Education	North Mac Cusd 34	$9,285,830.80	Illinois State Checkbook
2022	Il Community College Board	Oakton Community College	$9,284,784.84	Illinois State Checkbook
2021	State Board Of Education	Meridian Community Unit Dist	$9,284,369.79	Illinois State Checkbook
2022	Revenue	Macomb City Treasurer	$9,283,692.26	Illinois State Checkbook
2023	Human Services	Illinois Assistive Technology	$9,283,442.00	Illinois State Checkbook
2018	Transportation	Fh Paschen S N Nielsen &	$9,282,583.38	Illinois State Checkbook
2022	Revenue	Roselle Village Treasurer	$9,282,108.35	Illinois State Checkbook
2018	Healthcare & Family Services	Southern Illinois Medical Svcs	$9,278,218.01	Illinois State Checkbook
2025	Corrections	Geo Reentry Services Llc	$9,278,132.15	Illinois State Checkbook
2023	Secretary Of State	Galesburg Public Library	$9,276,569.75	Illinois State Checkbook
2021	Transportation	Dunnet Bay Construction Co	$9,276,380.22	Illinois State Checkbook
2022	State Board Of Education	Pontiac Central School Dist	$9,274,344.33	Illinois State Checkbook
2025	State Board Of Education	Chester Community Unit	$9,274,050.35	Illinois State Checkbook
2025	Transportation	Keller Construction Inc	$9,273,517.85	Illinois State Checkbook
2024	Aging	Destiny Healthcare Svcs Inc	$9,272,836.70	Illinois State Checkbook
2021	Revenue	Waukegan Cusd 60	$9,272,095.35	Illinois State Checkbook
2018	Human Services	Lake County	$9,271,584.02	Illinois State Checkbook
2022	Revenue	Mannheim Elem Sd 83	$9,269,576.92	Illinois State Checkbook
2024	Revenue	Taylorville City Treasurer	$9,267,887.41	Illinois State Checkbook
2023	Il Community College Board	Waubonsee Community College	$9,267,582.99	Illinois State Checkbook
2022	State Board Of Education	Hononegah High School	$9,265,954.72	Illinois State Checkbook
2021	State Board Of Education	Wabash Community Unit School	$9,264,055.83	Illinois State Checkbook
2021	Il Student Assistance Comm	Aurora University	$9,263,671.50	Illinois State Checkbook
2023	Healthcare & Family Services	Renaissance And Success Nb	$9,263,495.83	Illinois State Checkbook
2019	Revenue	Darien City Treasurer	$9,263,451.94	Illinois State Checkbook
2021	Revenue	Oak Forest Village Treasurer	$9,263,354.88	Illinois State Checkbook
2017	Transportation	Dms Contracting Inc	$9,263,236.36	Illinois State Checkbook
2024	Transportation	Stantec Consulting Services	$9,258,705.70	Illinois State Checkbook
2020	Healthcare & Family Services	Sycamore Cusd 427	$9,258,256.55	Illinois State Checkbook
2025	Revenue	Dekalb County Treasurer	$9,256,095.35	Illinois State Checkbook
2020	Transportation	Madison County	$9,251,933.30	Illinois State Checkbook
2018	State Board Of Education	Lake Villa Comm Consolidated	$9,249,216.80	Illinois State Checkbook
2022	Revenue	Morton Village Treasurer	$9,248,624.70	Illinois State Checkbook
2023	Commerce And Economic Opportun	Sangamon County	$9,246,660.41	Illinois State Checkbook
2025	State Board Of Education	Prairie Central Community	$9,246,648.85	Illinois State Checkbook
2020	Revenue	Lincolnwood Village Treasurer	$9,243,893.56	Illinois State Checkbook
2019	Revenue	Lake In The Hills Vlg Treasure	$9,243,328.31	Illinois State Checkbook
2022	State Board Of Education	Christopher Unit School	$9,242,912.04	Illinois State Checkbook
2023	Revenue	Forest Park Village Treasurer	$9,241,933.78	Illinois State Checkbook
2022	State Board Of Education	Oakwood Cusd 76	$9,240,290.73	Illinois State Checkbook
2024	Capital Development Board	Kroeschell Engineering Co Inc	$9,238,566.85	Illinois State Checkbook
2018	Transportation	Land & Water Resources Inc	$9,238,210.00	Illinois State Checkbook
2022	Human Services	Human Resources Dev Inst Inc	$9,236,811.32	Illinois State Checkbook
2025	Human Services	Healthcare Altrntv Systs Inc	$9,236,570.72	Illinois State Checkbook
2020	Revenue	Ottawa City Treasurer	$9,235,684.70	Illinois State Checkbook
2017	Human Services	Beacon Health Options Inc	$9,234,845.07	Illinois State Checkbook
2018	Revenue	Glen Ellyn Village Treasurer	$9,232,538.32	Illinois State Checkbook
2022	State Board Of Education	Community Consoldated School	$9,231,090.75	Illinois State Checkbook
2025	State Board Of Education	Lockport Township High School	$9,229,912.69	Illinois State Checkbook
2022	Transportation	St Clair County Of	$9,229,283.02	Illinois State Checkbook
2022	State Board Of Education	Winnebago Co Dist 323	$9,227,667.40	Illinois State Checkbook
2025	Revenue	Dixon City Treasurer	$9,226,930.20	Illinois State Checkbook
2021	State Board Of Education	Benton Community Consolidated	$9,226,236.71	Illinois State Checkbook
2020	Revenue	Darien City Treasurer	$9,223,882.81	Illinois State Checkbook
2020	State Board Of Education	Kirby School Dist 140	$9,223,528.49	Illinois State Checkbook
2021	Human Services	Greater Chicago Food Dpstry	$9,221,537.28	Illinois State Checkbook
2019	Il State Toll Highway Auth	Plote Construction Inc	$9,220,953.69	Illinois State Checkbook
2020	Il State Toll Highway Auth	Hdr Engineering Inc	$9,220,922.06	Illinois State Checkbook
2023	State Board Of Education	Bensenville Elementary Schl	$9,220,599.95	Illinois State Checkbook
2021	Il Community College Board	Kaskaskia College	$9,218,052.48	Illinois State Checkbook
2023	Healthcare & Family Services	Trinity Medical Center	$9,216,919.78	Illinois State Checkbook
2018	Revenue	Franklin Williamson Regional	$9,216,008.00	Illinois State Checkbook
2023	State Board Of Education	Geneva Cusd 304	$9,210,648.47	Illinois State Checkbook
2021	Public Health	Aids Foundation Of Chicago	$9,209,855.43	Illinois State Checkbook
2023	Commerce And Economic Opportun	Winnetka Village Of	$9,209,719.99	Illinois State Checkbook
2022	State Board Of Education	Lawndale Ed And Reg Network Ch	$9,206,905.32	Illinois State Checkbook
2025	Healthcare & Family Services	Advocate Health Care Network	$9,203,968.16	Illinois State Checkbook
2025	State Board Of Education	Momence Community Unit School	$9,202,413.85	Illinois State Checkbook
2017	State Board Of Education	Ball Chatham School Dist 5	$9,200,345.31	Illinois State Checkbook