Allen is a village in Hillsdale County in the U.S. state of Michigan.

With a total land area of only 0.174 square miles (0.451 km2), Allen is the fourth smallest village by land area in the state of Michigan and the fifth smallest municipality overall after Ahmeek, Copper City, Novi Township, and Eagle.

The community was first settled by War of 1812 veteran Captain Moses Allen and his family in 1827.

[6] According to the U.S. Census Bureau, the village has a total area of 0.174 square miles (0.451 km2), all land.

25.0% of all households were made up of individuals, and 18.8% had someone living alone who was 65 years of age or older.

28.7% of all households were made up of individuals, and 16.1% had someone living alone who was 65 years of age or older.

About 8.0% of families and 5.5% of the population were below the poverty line, including none of those under the age of eighteen or sixty five or over.