Flat Rock is an unincorporated community in Washington Township, Shelby County, in the U.S. state of Indiana.

[1] Flat Rock was platted in 1855.

[5] It had its own high school, Flat Rock High School, which operated from 1893 until its closure in 1958 when the community became part of the Southwestern Consolidated School Corporation of Shelby County.

[6] The United States Census Bureau first delineated Flat Rock as a census designated place in the 2022 American Community Survey.

This Shelby County, Indiana location article is a stub.