The city of Lucan is located in Granite Rock Township.

As of the census[1] of 2000, there were 241 people, 78 households, and 64 families residing in the township.

There were 87 housing units at an average density of 2.4 per square mile (0.93/km2).

14.1% of all households were made up of individuals, and 2.6% had someone living alone who was 65 years of age or older.

About 8.2% of families and 12.1% of the population were below the poverty line, including 15.0% of those under the age of eighteen and 6.5% of those 65 or over.