Excel Township was organized in 1884, and named after Excelsior, Minnesota.

[3] According to the United States Census Bureau, the township has a total area of 46.8 square miles (121 km2), all land.

There were 110 housing units at an average density of 2.3 per square mile (0.89/km2).

15.5% of all households were made up of individuals, and 5.8% had someone living alone who was 65 years of age or older.

About 3.3% of families and 5.6% of the population were below the poverty line, including 6.0% of those under the age of eighteen and none of those 65 or over.