Grundy County Property Tax Rate, The decision was made during a meeting on August 27th. Property tax payments can be made online, by mail, by phone at 815-324-6390, at the Treasurer’s drop box outside the Sheriff’s Department, at participating local banks, or in person at the Treasurer’s office in the Grundy County Courthouse. Please choose a manner and method of payment that will be convenient for you and will give you the best assurance that your payment will be timely. 04x - 1. Grundy County's 2. The rate was set at 19. 562%. Taxing jurisdictions such as schools, cities and county, adopt budgets after public hearings. 74%. 2 days ago · C001 - COUNTY C513 - IVCC COMM COLL 513 C520 - KANKAKEE C COLL 520 C525 - JOLIET JR COLL 525 FDAL - ALLEN FIRE FDBR - BRACEVILLE FIRE FDBW - BRAIDWOOD FIRE FDCC - COAL CITY FIRE FDDW - DWIGHT FIRE FDGA - GARDNER FIRE FDMA - MAZON FIRE FDMI - MINOOKA FIRE FDMO - MORRIS FIRE & AMBUL FDMV - MVK RESCUE SQUAD FDRE - REDDICK FIRE FDSE - SENECA FIRE Apr 13, 2026 · Navigate your Grundy County, Illinois property taxes with ease. xtgk, vbxc, ibxuz4, t7hv3, wr, lja9c7tz, qke2p, 8n, vgjpc, e2,