Where to bid in Winnebago County, IL

Winnebago County posts its bids and RFPs on its open bids page. Contracts here can also come from the State of Illinois (BidBuy).

Winnebago County

Open bids →

Open Bids, Quotes & RFPs

Bid page checked, 2026-11-05.

State of Illinois

BidBuy

In SpendQuery: Capital Development Board projects expected to bid

Bid page checked, 2026-11-05.

Cities in Winnebago County

SpendQuery links to Winnebago County's own pages and doesn't copy their bids. Wrong or missing link?

All of Illinois