Grundy County Property Tax Rate, The rate was set at 19. The average yearly Taxes Property taxes in Grundy County usually range between $3,200 and $7,350, with the average tax bill sitting at $5,329 (15% higher than average property taxes in Illinois). The decision was made during a meeting on August 27th. . The Grundy County Treasurer's Office, located in Morris, Illinois is responsible for financial transactions, including issuing Grundy County tax bills, collecting personal and real property tax payments. O’Connor, the Grundy County, IL property tax experts, has been helping property owners reduce taxes with proven results for over 20 years. Jun 9, 2026 · Learn how to search Grundy County tax maps, understand your property assessment, and find exemptions that could lower your tax bill. There are 102 taxing districts in Grundy County. Use our calculator, review assessment values, and find ways to save money with Ownwell. The Supervisor of Assessments is concerned with value and does not collect taxes, calculate taxes or determine the tax rate. nrxw, 9l, ke4k, uteh, pcvoz, obikq, ssgo, p54ml4, ngb9y, 7eoldg,