Home Chicago Agencies Chicago Government Agencies 39 Chicago city government agencies have paid vendors $19,337,412,829 across 19,663 tracked payments. Ranked by total spending.
Rankings Vendors Agencies Openings Verification # Agency Total paid Payments Vendors 1 Unknown Department $18,608,115,923 213,215 61,133 2 Chicago Department of Aviation $1,046,880,892 5,312 112 3 Department of Finance $838,077,410 634 38 4 Chicago Department of Transportation $567,221,013 3,186 91 5 Department of Family and Support Services $385,679,113 13,811 285 6 Department of Planning and Development $355,852,062 627 160 7 Department of Water Management $337,217,018 2,517 90 8 Dept of General Services $245,074,483 7,420 67 9 Dept of Assets Information and Services $160,448,478 787 24 10 Department of Streets and Sanitation $111,185,621 492 17 11 Department of Fleet and Facility Management $107,333,861 2,792 20 12 Dept of Business & Information Services $96,683,639 1,371 9 13 Chicago Department of Public Health $90,601,498 4,865 136 14 Office of Public Safety Administration $36,560,827 655 24 15 Office of Emergency Management and Communications $32,107,495 416 9 16 Department of Cultural Affairs and Special Events $28,437,302 778 442 17 Department of Technology and Innovation $25,120,305 634 3 18 Chicago Fire Department $24,297,113 1,448 16 19 Planning & Development $20,995,188 214 9 20 Department of Housing $15,725,244 940 47 21 Chicago Police Department $8,866,350 754 22 22 Department of Buildings $8,687,802 74 8 23 Dept of Fleet MGMT $7,047,713 979 13 24 Dept of Innovation & Technology $6,894,178 196 3 25 Ohare Modernization Project $5,421,660 38 3 26 Department of Human Resources $4,793,862 249 4 27 Mayors Office for People With Disabilities $4,162,857 210 4 28 Dept of Business Affairs & Consumer Protection $4,155,987 471 55 29 Department of Revenue $3,428,111 13 1 30 Department of Business Affairs and Consumer Protection $2,714,959 514 59 31 Department of Law $2,671,012 221 7 32 Office of Budget & Management $1,981,001 18 5 33 Chicago Public Library $1,772,680 217 12 34 Department of Environment $1,542,311 127 8 35 Office of City Clerk $1,275,578 36 4 36 Department of Personnel $835,433 26 2 37 Department of Procurement Services $445,113 70 5 38 Department of Cultural Affairs $416,452 130 5 39 Office of the Mayor $255,163 3 3
Verified Data refreshed Sep 24, 2026 from Chicago Checkbook (data.cityofchicago.org): 266,483 payments on record, Jan 3, 2022 to Dec 31, 2025. How we verify this data