[3] The county is named for Captain Nathaniel G. S. Hart, a Kentucky militia officer in the War of 1812 who was wounded at the Battle of Frenchtown and died in the Massacre of the River Raisin.

[4][5] The Battle of Munfordville, a Confederate victory, was fought in the county in 1862, during the American Civil War.

It is the fastest growing Amish settlement in America and had 14 church districts and a total population of about 1,800 people as of 2013[update].

The Fisher Ridge Cave System is located in Hart County.

The Amish settlement in Hart County mainly between Munfordville and Horse Cave was founded in 1989.

It is the fastest-growing Amish settlement in America and had 14 church districts and a total population of about 1,800 as of 2013[update].

[1] Religion in Hart County,according to ARDA (2020) [18][failed verification] *"Nones" is an unclear category.

The last Democratic Party presidential candidate to carry the county was Bill Clinton in 1992.