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Peoria County, Illinois


The Peoria County Courthouse is located at 324 Main street, Peoria IL 61602; phone: 309-672-6056.

Peoria County Neighborhoods

Peoria County was established in 1825. The population at that time was 1,236. The city of Peoria was platted in 1825, incorporated as a village in 1835 and as a city in 1845.