The district is based in southwestern Ohio and consists of Montgomery County, Greene County, and a portion of Clark County.

The cities of Dayton, Centerville, Xenia, and Springfield are part of the district.

[4] For the 118th and successive Congresses (based on redistricting following the 2020 census), the district contains all or portions of the following counties, townships, and municipalities:[8] Clark County (23) Greene County (23) Montgomery County (31) The following chart shows historic election results.

Bold type indicates victor.

Italic type indicates incumbent.