Harrods Creek, Louisville merged with Jefferson County,  most populous county in Kentucky, in 2003.
 Formerly an unincorporated community, it was designated a neighborhood of Louisville when the city merged with Jefferson County in 2003. 
Jefferson County is a county located in the U.S. state of Kentucky. 
 It is the most populous county in Kentucky and is more than twice as large as the second most populous, Fayette. 
