Philo is Township 18 North, Range 9 East of the Third Principal Meridian.

According to the 2010 census, the township has a total area of 36.66 square miles (94.9 km2), all land.

[2] The township contains these cemeteries: Calvary, Captain Davidson, Locust Grove (Section 22) and Loeffler.

Philo elevator (Section 22) was built along the Wabash—Norfolk Southern railroad.

14.80% of all households were made up of individuals, and 9.10% had someone living alone who was 65 years of age or older.