Jefferson County, Kentucky
county in Kentucky, United States
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 the commonwealth. Its county seat and largest city is Louisville, Kentucky.
Location within the U.S. state of Kentucky
Kentucky's location within the U.S.
|Named for||Thomas Jefferson|
|• Total||398 sq mi (1,030 km2)|
|• Land||380 sq mi (1,000 km2)|
|• Water||17 sq mi (40 km2) 4.3%%|
| • Estimate |
|• Density||2,011/sq mi (776/km2)|
|Time zone||UTC−5 (Eastern)|
|• Summer (DST)||UTC−4 (EDT)|
|Congressional districts||3rd, 4th|
- "State & County QuickFacts". United States Census Bureau. Retrieved March 8, 2014.
- "Louisville/Jefferson County Metro Government Code of Ordinances". American Legal Publishing Corporation. Retrieved August 19, 2014.