[5] According to the United States Census Bureau, the borough has a total area of 0.5 square miles (1.3 km2), all land.

The north branch of Plum Creek passes through Plumville; it is spanned by a bridge constructed in 1918.

An 1856 land ownership map depicted it as a small community within South Mahoning township.

[9] The Consolidated Coal and Coke Company's Plumville mine was located in the area west of Redding Run Road.

[10] The Pennsylvania Department of Environmental Protection has identified undermined areas within and adjacent to the borough.