| Year |
Employer |
Vendor Name |
Amount |
Source |
| 2022 |
Comptroller |
Teachers Retirement System |
$172,986,596.02 |
Illinois State Checkbook |
| 2022 |
State Board Of Education |
Proviso Township |
$172,922,502.00 |
Illinois State Checkbook |
| 2019 |
State Lottery |
Camelot Global Svcs Inc |
$172,904,462.48 |
Illinois State Checkbook |
| 2024 |
Transportation |
Cook County |
$172,125,310.48 |
Illinois State Checkbook |
| 2018 |
Revenue |
Chicago Board Of Education |
$171,881,671.19 |
Illinois State Checkbook |
| 2023 |
Il State Toll Highway Auth |
Walsh Construction Co Ii Llc |
$170,580,423.28 |
Illinois State Checkbook |
| 2018 |
State Board Of Education |
Thornton Twp School Trustees |
$170,545,932.57 |
Illinois State Checkbook |
| 2017 |
Revenue |
Chicago City Of |
$170,018,344.55 |
Illinois State Checkbook |
| 2017 |
State Univ Retirement Sys |
State Univ Retirement System |
$170,000,000.00 |
Illinois State Checkbook |
| 2017 |
Central Management |
Treasurer Office Of |
$169,903,688.53 |
Illinois State Checkbook |
| 2017 |
State Board Of Education |
School District U-46 |
$169,623,508.24 |
Illinois State Checkbook |
| 2022 |
State Board Of Education |
Worth Twp Trustees Of Schools |
$168,553,271.95 |
Illinois State Checkbook |
| 2020 |
Revenue |
Chicago City Of |
$168,095,307.97 |
Illinois State Checkbook |
| 2021 |
State Board Of Education |
Proviso Township |
$167,379,197.99 |
Illinois State Checkbook |
| 2022 |
State Board Of Education |
Township 36 North Range 13 E |
$167,137,474.55 |
Illinois State Checkbook |
| 2018 |
Central Management |
Treasurer Office Of |
$166,406,740.66 |
Illinois State Checkbook |
| 2023 |
Healthcare & Family Services |
Humana Health Plan Inc |
$165,879,487.03 |
Illinois State Checkbook |
| 2017 |
State Board Of Education |
School District 205 Board Of |
$165,740,419.90 |
Illinois State Checkbook |
| 2024 |
Healthcare & Family Services |
Advocate Health And Hospitals |
$165,685,212.02 |
Illinois State Checkbook |
| 2022 |
State Board Of Education |
County Of Cook School Dist 99 |
$165,070,436.87 |
Illinois State Checkbook |
| 2020 |
Transportation |
Chicago City Of |
$164,781,659.95 |
Illinois State Checkbook |
| 2023 |
State Board Of Education |
County Of Cook School Dist 99 |
$163,648,412.55 |
Illinois State Checkbook |
| 2024 |
State Board Of Education |
Plainfield School Dist 202 |
$163,225,539.92 |
Illinois State Checkbook |
| 2020 |
Transportation |
Chicago City Treasurer |
$163,223,059.65 |
Illinois State Checkbook |
| 2024 |
State Board Of Education |
County Of Cook School Dist 99 |
$162,727,048.54 |
Illinois State Checkbook |
| 2022 |
Il State Toll Highway Auth |
Fh Paschen S N Nielsen & |
$161,407,958.01 |
Illinois State Checkbook |
| 2024 |
Transportation |
Walsh Construction Co Ii Llc |
$161,207,035.63 |
Illinois State Checkbook |
| 2018 |
Environmental Protect Agency |
Chicago City Of |
$161,097,183.70 |
Illinois State Checkbook |
| 2018 |
Metro Pier & Exposition Auth |
Metropolitan Pier & Exposition |
$161,002,608.72 |
Illinois State Checkbook |
| 2018 |
Healthcare & Family Services |
Walgreens Company |
$157,873,146.36 |
Illinois State Checkbook |
| 2017 |
Aging |
Addus Healthcare Inc |
$157,624,444.22 |
Illinois State Checkbook |
| 2022 |
Il Emergency Management Agcy |
State Of Illinois Emergency |
$157,527,995.00 |
Illinois State Checkbook |
| 2020 |
Il State Toll Highway Auth |
Union Pacific Railroad Company |
$156,450,000.00 |
Illinois State Checkbook |
| 2023 |
State Board Of Education |
Plainfield School Dist 202 |
$155,723,072.22 |
Illinois State Checkbook |
| 2024 |
State Lottery |
Treasurer Office Of |
$155,617,237.00 |
Illinois State Checkbook |
| 2023 |
Healthcare & Family Services |
Advocate Health And Hospitals |
$155,102,520.59 |
Illinois State Checkbook |
| 2019 |
Revenue |
Chicago City Of |
$153,563,525.12 |
Illinois State Checkbook |
| 2019 |
State Board Of Education |
Community Unit School Dist 60 |
$153,177,184.25 |
Illinois State Checkbook |
| 2023 |
Il Student Assistance Comm |
University Of Illinois |
$152,788,926.72 |
Illinois State Checkbook |
| 2018 |
Aging |
Addus Healthcare Inc |
$152,743,196.47 |
Illinois State Checkbook |
| 2021 |
Metro Pier & Exposition Auth |
Metropolitan Pier & Exposition |
$152,458,402.16 |
Illinois State Checkbook |
| 2019 |
Treasurer |
Zb National Association |
$152,163,704.70 |
Illinois State Checkbook |
| 2023 |
Revenue |
Chicago Park District |
$150,893,987.66 |
Illinois State Checkbook |
| 2018 |
Environmental Protect Agency |
Metropolitan Water Reclamation |
$150,498,948.88 |
Illinois State Checkbook |
| 2020 |
State Board Of Education |
Proviso Township |
$150,478,225.39 |
Illinois State Checkbook |
| 2023 |
Commerce And Economic Opportun |
National Community |
$150,225,745.64 |
Illinois State Checkbook |
| 2019 |
State Lottery |
Treasurer Office Of |
$149,737,203.00 |
Illinois State Checkbook |
| 2018 |
Healthcare & Family Services |
Advocate Health And Hospitals |
$149,318,165.75 |
Illinois State Checkbook |
| 2021 |
State Board Of Education |
Worth Twp Trustees Of Schools |
$148,250,534.01 |
Illinois State Checkbook |
| 2024 |
State Board Of Education |
Joliet Public Schools Dist 86 |
$147,630,937.25 |
Illinois State Checkbook |
| 2017 |
Transportation |
United Contractors Midwest Inc |
$147,602,287.91 |
Illinois State Checkbook |
| 2017 |
State Board Of Education |
Thornton Twp School Trustees |
$147,231,630.55 |
Illinois State Checkbook |
| 2018 |
State Board Of Education |
Community Unit School Dist 60 |
$147,120,299.93 |
Illinois State Checkbook |
| 2023 |
State Lottery |
Camelot Global Svcs Inc |
$146,998,981.14 |
Illinois State Checkbook |
| 2018 |
State Board Of Education |
School District 131 |
$146,622,231.68 |
Illinois State Checkbook |
| 2020 |
Transportation |
United Contractors Midwest Inc |
$145,519,986.89 |
Illinois State Checkbook |
| 2021 |
Healthcare & Family Services |
Advocate Health And Hospitals |
$145,383,426.03 |
Illinois State Checkbook |
| 2020 |
Healthcare & Family Services |
Advocate Health And Hospitals |
$145,014,265.46 |
Illinois State Checkbook |
| 2024 |
Human Services |
Citizens Alliance Bank |
$144,966,059.90 |
Illinois State Checkbook |
| 2020 |
State Board Of Education |
County Of Cook School Dist 99 |
$144,052,024.84 |
Illinois State Checkbook |
| 2021 |
State Board Of Education |
County Of Cook School Dist 99 |
$143,706,545.31 |
Illinois State Checkbook |
| 2022 |
Il Emergency Management Agcy |
Favorite Healthcare Staffing |
$143,201,060.35 |
Illinois State Checkbook |
| 2022 |
Metro Pier & Exposition Auth |
Metropolitan Pier & Exposition |
$143,136,741.59 |
Illinois State Checkbook |
| 2023 |
Transportation |
Chicago City Treasurer |
$142,783,456.38 |
Illinois State Checkbook |
| 2022 |
State Board Of Education |
Plainfield School Dist 202 |
$142,530,465.09 |
Illinois State Checkbook |
| 2023 |
Il State Toll Highway Auth |
Fh Paschen S N Nielsen & |
$142,173,235.55 |
Illinois State Checkbook |
| 2020 |
State Board Of Education |
Worth Twp Trustees Of Schools |
$142,077,187.95 |
Illinois State Checkbook |
| 2018 |
Revenue |
Chicago City Of |
$141,949,672.35 |
Illinois State Checkbook |
| 2017 |
Aging |
Help At Home Inc |
$141,841,128.22 |
Illinois State Checkbook |
| 2019 |
Aging |
Addus Healthcare Inc |
$141,836,753.90 |
Illinois State Checkbook |
| 2023 |
State Board Of Education |
Board Of Education City Of |
$141,454,622.79 |
Illinois State Checkbook |
| 2024 |
State Board Of Education |
Lyons Twp School Treasurer |
$141,426,364.70 |
Illinois State Checkbook |
| 2024 |
Il State Toll Highway Auth |
Walsh Construction Co Ii Llc |
$141,076,962.33 |
Illinois State Checkbook |
| 2019 |
Corrections |
Wexford Health Sources Inc |
$140,564,256.52 |
Illinois State Checkbook |
| 2021 |
State Board Of Education |
Township 36 North Range 13 E |
$140,123,616.93 |
Illinois State Checkbook |
| 2023 |
State Board Of Education |
Joliet Public Schools Dist 86 |
$140,047,316.19 |
Illinois State Checkbook |
| 2022 |
Transportation |
Chicago City Treasurer |
$137,972,657.96 |
Illinois State Checkbook |
| 2023 |
State Lottery |
Lottery Dept Of |
$137,794,819.59 |
Illinois State Checkbook |
| 2022 |
Commerce And Economic Opportun |
Illinois Housing Dev Authority |
$137,409,889.99 |
Illinois State Checkbook |
| 2019 |
State Board Of Education |
Proviso Township |
$136,920,833.79 |
Illinois State Checkbook |
| 2020 |
State Lottery |
Camelot Global Svcs Inc |
$135,852,318.72 |
Illinois State Checkbook |
| 2023 |
Transportation |
D Construction Inc |
$135,670,503.53 |
Illinois State Checkbook |
| 2022 |
Healthcare & Family Services |
Advocate Health And Hospitals |
$135,571,231.06 |
Illinois State Checkbook |
| 2023 |
Transportation |
Chicago City Of |
$134,915,365.09 |
Illinois State Checkbook |
| 2022 |
Il State Toll Highway Auth |
Judlau Contracting Inc |
$134,739,617.81 |
Illinois State Checkbook |
| 2020 |
Healthcare & Family Services |
University Of Chicago Hospital |
$134,448,788.53 |
Illinois State Checkbook |
| 2020 |
State Board Of Education |
Township 36 North Range 13 E |
$134,376,682.59 |
Illinois State Checkbook |
| 2021 |
State Lottery |
Camelot Global Svcs Inc |
$134,334,678.76 |
Illinois State Checkbook |
| 2019 |
State Board Of Education |
County Of Cook School Dist 99 |
$134,328,034.15 |
Illinois State Checkbook |
| 2018 |
Human Services |
Citizens Alliance Bank |
$134,220,562.92 |
Illinois State Checkbook |
| 2023 |
Revenue |
Metrpltn Water Rclm Dist Of Ch |
$134,106,062.84 |
Illinois State Checkbook |
| 2022 |
Revenue |
Chicago Park District |
$133,507,650.01 |
Illinois State Checkbook |
| 2024 |
State Board Of Education |
Board Of Education City Of |
$133,317,849.51 |
Illinois State Checkbook |
| 2017 |
Healthcare & Family Services |
University Of Illinois |
$132,690,658.10 |
Illinois State Checkbook |
| 2018 |
State Board Of Education |
Proviso Township |
$131,717,696.39 |
Illinois State Checkbook |
| 2021 |
Transportation |
D Construction Inc |
$131,417,210.18 |
Illinois State Checkbook |
| 2018 |
State Board Of Education |
County Of Cook School Dist 99 |
$130,991,547.88 |
Illinois State Checkbook |
| 2019 |
Transportation |
Chicago City Of |
$130,658,946.37 |
Illinois State Checkbook |
| 2022 |
State Board Of Education |
Joliet Public Schools Dist 86 |
$130,511,367.23 |
Illinois State Checkbook |
| 2023 |
State Board Of Education |
Lyons Twp School Treasurer |
$130,186,060.82 |
Illinois State Checkbook |