Question: Harrods Creek, Louisville merged with what most populous county in Kentucky in 2003?

Related documents: [0]  [DOC] Harrods Creek is a neighborhood of Louisville, Kentucky centered near Harrods Creek at the intersection of River Road and Wolf Pen Branch Road. It is roughly bordered by the Ohio River to the west and US 42 to the east. Its ZIP code is 40027. Formerly an unincorporated community, it was designated a neighborhood of Louisville when the city merged with Jefferson County in 2003. [END] 
[1]  [DOC] 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. [END]  
Answer: Jefferson County
Jefferson County