Peoria County on the map of Illinois 2024. Cities, roads, borders and directions in Peoria County of Illinois.

Peoria County is found in the central part of Illinois. This awesome county was named after The Peoria Native American tribe. The population of Peoria County exceeds 179 thousand people. The county, formed in 1825, covers an area of 618 square miles. The county seat of Peoria County is Peoria. This map shows the borders of Peoria County as well as neighboring counties, including major highways and natural objecsts as of 2024. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Peoria County.