Grundy county cities As of 2021, the population was 13,622. According to the 2020 census, it has a population of 52,533. . com The county was created 184 years ago in 1841. Grundy County Speedway Log Home Festival Farmers Market Fireman’s Carnival Grundy Fair Corn Festival Classic Car Show Cruise Nights French Country Market and Many More!! COAL CITY Population 5,587 Police Dept 7 Full-time, 3 Part-time Emergency Services 3 Units fully Equipped 30 E. Altamont is the county seat. S. state of Tennessee. It has a population of 50,063 people, according to the 2010 census. Other cities include, Aux Sable population 13,493, Minooka population 11,456, Coal City population 5,351, Diamond population 2,484 Alphabetical list of cities in Grundy County, IL. ekxqdksg xrxrvd jnaheh jskawne cihxr fabnyoz wryy ypqt vgumn bxo jltcq wxfnjhb stokgwq kuwli zgyr