Harrods Creek, Louisville merged with what most populous county in Kentucky in 2003?
Jefferson County, Kentucky Jefferson County is a county located in the U.S. state of Kentucky. As of the 2010 census, the population was 741,096. It is the most populous county in Kentucky and is more than twice as large as the second most populous, Fayette. The county was formed in 1780 and named for future President Thomas Jefferson, who was Governor of Virginia at the time.
St. Regis Park, Kentucky St. Regis Park is a home rule-class city in Jefferson County, Kentucky, United States, and a part of the Louisville Metro government. The population was 1,520 during the year 2000 U.S. Census.