Where to bid in DuPage County, IL
DuPage County posts its bids and RFPs on its open bids page, which runs on DemandStar. Contracts here can also come from the State of Illinois (BidBuy).
DuPage County
Bids and RFPs · runs on DemandStar
Bid page checked, 2026-11-05.
State of Illinois
In SpendQuery: Capital Development Board projects expected to bid
Bid page checked, 2026-11-05.
Federal contracts performed in DuPage County
Federal agencies obligated $3.51B on contracts for work performed in DuPage County in fiscal year 2026, most from Department of Defense ($2.13B), Department of Energy ($1.20B) and Department of Veterans Affairs ($111.57M). The largest contractors: W S Darley & Co ($1.76B), Uchicago Argonne, LLC ($1.20B), Aar Corp ($307.40M), Sonova USA Inc ($91.48M), Mistica Foods LLC ($19.26M).
Ask about federal money in DuPage County · Open federal notices in Illinois · DuPage County: federal money by agency and program
Place of performance as agencies report it, USAspending.gov. Amounts are obligations (money committed).
Cities in DuPage County
- Naperville · OpenGov Procurement
- Wheaton
- Elmhurst
- Lombard
- Bartlett
- Carol Stream
- Addison
- Woodridge
- Glen Ellyn
- West Chicago
- Westmont
- Lisle
- Roselle
- Bloomingdale
- Villa Park
- Darien
- Bensenville
- Hinsdale
- Warrenville
- Wood Dale
- Burr Ridge
- Winfield
SpendQuery links to DuPage County's own pages and doesn't copy their bids. Wrong or missing link?