According to the United States Census Bureau, the township has a total area of 28.0 square miles (72.4 km2), all land.

[3] The township includes the unincorporated communities of McCracken, Aleppo, Morford, and Windy Gap.

The racial makeup of the township was 99.66% White, 0.17% Native American, and 0.17% from two or more races.

26.2% of all households were made up of individuals, and 13.3% had someone living alone who was 65 years of age or older.

Media related to Aleppo Township, Greene County, Pennsylvania at Wikimedia Commons