Chicago Government Agencies

39 Chicago city government agencies have paid vendors $19,380,248,928 across 19,760 tracked payments. Ranked by total spending.

#AgencyTotal paidPaymentsVendors
1Unknown Department$18,607,040,224213,12161,131
2Chicago Department of Aviation$1,046,880,8925,312112
3Department of Finance$838,077,41063438
4Chicago Department of Transportation$567,221,0133,18691
5Department of Family and Support Services$385,963,45813,880287
6Department of Planning and Development$354,236,270621156
7Department of Water Management$337,217,0182,51790
8Dept of General Services$245,074,4837,42067
9Dept of Assets Information and Services$160,448,47878724
10Department of Streets and Sanitation$111,185,62149217
11Department of Fleet and Facility Management$107,333,8612,79220
12Dept of Business & Information Services$96,683,6391,3719
13Chicago Department of Public Health$92,872,2724,998138
14Office of Public Safety Administration$36,560,82765524
15Office of Emergency Management and Communications$32,107,4954169
16Department of Cultural Affairs and Special Events$28,437,302778442
17Department of Technology and Innovation$25,120,3056343
18Chicago Fire Department$24,297,1131,44816
19Planning & Development$20,995,1882149
20Department of Housing$15,725,24494047
21Chicago Police Department$8,866,35075422
22Department of Buildings$8,687,802748
23Dept of Fleet MGMT$7,047,71397913
24Dept of Innovation & Technology$6,894,1781963
25Ohare Modernization Project$5,421,660383
26Department of Human Resources$4,793,8622494
27Mayors Office for People With Disabilities$4,162,8572104
28Dept of Business Affairs & Consumer Protection$4,155,98747155
29Department of Revenue$3,428,111131
30Department of Business Affairs and Consumer Protection$2,714,95951459
31Department of Law$2,671,0122217
32Office of Budget & Management$1,981,001185
33Chicago Public Library$1,772,68021712
34Department of Environment$1,542,3111278
35Office of City Clerk$1,275,578364
36Department of Personnel$835,433262
37Department of Procurement Services$445,113705
38Department of Cultural Affairs$416,4521305
39Office of the Mayor$255,16333

VerifiedData refreshed Jul 20, 2026 from Chicago Checkbook (data.cityofchicago.org): 266,585 payments on record, Jan 3, 2022 to Dec 31, 2025. How we verify this data