Blakely Township was organized in 1874, and named after its largest settlement, Blakeley.

As of the census[1] of 2000, there were 496 people, 166 households, and 132 families residing in the township.

There were 169 housing units at an average density of 6.3 per square mile (2.4/km2).

There were 166 households, out of which 37.3% had children under the age of 18 living with them, 68.7% were married couples living together, 4.8% had a female householder with no husband present, and 19.9% were non-families.

12.0% of all households were made up of individuals, and 6.0% had someone living alone who was 65 years of age or older.