Blue River Township is one of thirteen townships in Henry County, Indiana, United States. As of the 2010 census, its population was 1,224 and it contained 500 housing units.[2]
According to the 2010 census, the township has a total area of 22.05 square miles (57.1 km2), of which 21.98 square miles (56.9 km2) (or 99.68%) is land and 0.07 square miles (0.18 km2) (or 0.32%) is water.[2] The streams of Number Four Arm and Wilbur Wright Creek run through this township.