Peoria is an unincorporated community in Liberty Township, Union County, Ohio, United States.

The town was established at the junction of the newly built Marysville-Newton Road (Raymond was then called Newton) and the Atlantic and Great Western Railroad.

[5] The Peoria railroad station, situated at the grade crossing of the two rail lines, was the only depot in Liberty Township that could accommodate both freight and passengers.

Largely because of the railroad station and the post office established there in 1872, Peoria quickly became a commercial center, featuring stores, churches, warehouses, hotels, small businesses—including a barber shop and a mill—a grange hall and a public school.

With the closing of the post office in 1967, followed by the abandonment of the Erie-Lackawanna rail line (formerly the A&GW) in the early 1970s, the community became primarily residential, with commerce flowing to nearby Raymond, Broadway, and Marysville.