[2] According to the U.S. Census Bureau, the township has a total area of 17.2 square miles (45 km2), of which 0.06% is water.

London Grove Township is located in southern Chester County in Pennsylvania's rolling Piedmont region.

The township traditionally has been an agricultural community, but has recently also become an attractive place to live as development pushes west from Philadelphia and north from Wilmington, Delaware.

Foreign born persons, percent, 2018-2022 7.5%[4] At the 2000 census there were 5,265 people, 1,633 households, and 1,365 families living in the township.

Pennsylvania Route 41 follows Gap Newport Pike along a northwest–southeast alignment across the northern portion of the township.

Finally, Pennsylvania Route 926 follows Street Road along a southwest–northeast alignment along the northern border of the township.