As of the 2010 census, its population was 4,292 and it contained 1,707 housing units.

Clay Township is also home to the Goethe Link Observatory and Bradford Woods, both affiliated to Indiana University.

Fire protection is provided to the township by the Brooklyn Volunteer Fire Department, which operates stations in Brooklyn and on Robb Hill Road.

The Franklin Landers-Black and Adams Farm and Bradford Estate are listed on the National Register of Historic Places.

[2] (This list is based on USGS data and may include former settlements.)