Lagro Township is one of seven townships in Wabash County, Indiana, United States. As of the 2020 census, its population was 2,733 (down from 2,894 at 2010[2]) and it contained 1,194 housing units.
According to the 2010 census, the township has a total area of 83.33 square miles (215.8 km2), of which 81.24 square miles (210.4 km2) (or 97.49%) is land and 2.09 square miles (5.4 km2) (or 2.51%) is water.[2]