Last update: Sept. 8, 2026, 2:51 p.m. Source: IAR Data Warehouse Data notes: - Geography notes: Metropolitan Statistical Areas are defined by the U.S. Census Bureau after each decennial census. They are made up of one or more counties and contain an urbanized area with at least 50,000 people. Learn more here: https://www.census.gov/programs-surveys/metro-micro/about.html. Louisville MSA includes Clark County, Floyd County, Harrison County, Scott County, Washington County.