Hickory Grove Township is one of eleven townships in Benton County, Indiana.

[3] As of the 2020 census, its population was 398 and it contained 168 housing units.

[4] It was organized in March 1876 and named for a grove of hickory trees that grew within its borders in the 19th century.

[5] According to the 2020 census, the township has a total area of 28.9 square miles (75 km2), all land.

[4] The township contains one cemetery, Totheroh.