Grafton is an unincorporated community in Black Township, Posey County, in the U.S. state of Indiana.

[1] Grafton was laid out in 1852 near the site of a gristmill on Big Creek.

[2] The community was named after Grafton, Illinois.

[3] The Grafton post office closed in 1902.

This Posey County, Indiana location article is a stub.