(35 ILCS 200/20-105)

Sec. 20-105. Demand for payment of special assessment when general tax is paid; counties of 3,000,000 or more. In any county with 3,000,000 or more inhabitants, when any special assessment is returned to the county collector on a property on which the general taxes have been paid to the township collector, or on which any special assessment which has been withdrawn at any previous sale or sales is returned to the county collector, and the general taxes on the property have been paid, the county collector shall demand payment of the special assessment, or shall mail a demand notice to the owner, if the place of residence is known. The certificate of a collector that a demand was made or notice given shall be evidence thereof.

(Source: P.A. 76-2254; 88-455.)