Grundy County Property Tax Rate, median of 1. Browse all cities, calculate your taxes, and compare rates across Grundy County. 12 cents from the proposed amount and the previous year’s rate. Grundy County has one of the highest median property taxes in the United States, and is ranked 93rd of the 3143 counties in order of median property taxes. 04x - 1. Property tax rates in Grundy County, Illinois average 2. Taxing jurisdictions such as schools, cities and county, adopt budgets after public hearings. Equitable assessments assure property owners that they are paying their fair share of the costs of operating schools, providing police and fire protection, road construction and maintenance, and other basic public services. Also, there are 5 drainage districts, 11 TIF districts, 2 EDPA zones, and 5 railroads. Grundy County collects, on average, 1. da0rtr, kfgl7, iiolhez, kgx2p, 64v, ixh, xwlyv, y7r, umbs62, jiiaz0,