According to the 2010 census, the township has a total area of , of which (or 99.65%) is land and (or 0.35%) is water.
Unincorporated towns •
Martinsburg at (This list is based on USGS data and may include former settlements.)
Adjacent townships •
Pierce Township (north) •
Polk Township (northeast) •
Wood Township, Clark County (east) •
Greenville Township, Floyd County (southeast) •
Morgan Township, Harrison County (southwest) •
Posey Township (west) •
Howard Township (northwest)
Cemeteries The township contains four cemeteries: Goss, Hiestand, Martinsburg and Rickerd.
Lakes • Palmyra Lake ==School districts==