Pleasant Valley Township is one of 23 townships in Jo Daviess County, Illinois, United States.

As of the 2010 census, its population was 273 and it contained 157 housing units.

[2] According to the 2010 census, the township has a total area of 36.66 square miles (94.9 km2), all land.

[2] The township contains Plum River Catholic Cemetery.