 In 2018, the Louisville Combined Statistical Area (CSA) had a population of 1,569,112; including 1,209,191 in Kentucky, which means more than 25% of the state's population now lives in the Louisville CSA.Since 2000, over one-third of the state's population growth has occurred in the Louisville CSA.In addition, the top 28 wealthiest places in Kentucky are in Jefferson County and seven of the 15 wealthiest counties in the state are located in the Louisville CSA.