County and municipal agencies in Kane County, Illinois sell surplus through online auction sites like GovDeals and Public Surplus. BidProwl tracks all of them in one place: 25 live lots right now. Register on the platform hosting the lot you want; most items are local pickup only.
The usual mix is retired fleet vehicles and police cruisers, public works equipment, school district electronics and furniture, and unclaimed or seized property. Inventory refreshes daily as agencies list new surplus.
27 live auctions across Kane County right now.

Gilberts, IL · GovDeals
5d 14h left · 4 bids
$726
South Elgin, IL · PurpleWave
2d 11h left · 3 bids
$30

South Elgin, IL · GovDeals
36d 12h left
$1