Smithville is an unincorporated community and census-designated place (CDP) in Peoria County, Illinois, United States.

It is in the southern part of the county, in the center of Logan Township.

Smithville was first listed as a CDP prior to the 2020 census.

Smithville first appeared as a census designated place in the 2020 U.S.

This Peoria County, Illinois location article is a stub.