Oldham County
Also known as Oldham County, Kentucky, Oldham County, KY
county in Kentucky, United States
Key facts
- Country
- United States
- State
- Kentucky
- Founded
- December 15, 1823
- Named after
- William Oldham (1753–1791), American Revolutionary War colonel
- Seat
- La Grange
- Largest city
- La Grange
- Judge executive
- David Voegele (R)
- Total
- 196 sq mi (510 km )
- Land
- 187 sq mi (480 km )
- Water
- 9.2 sq mi (24 km ) 4.7%
- Estimate 2025
- 70,986
- Density
- 362/sq mi (140/km )
- Time zone
Article
Oldham County is a county located in the north central part of the U.S. state of Kentucky. As of the 2020 census, the population was 67,607. Its county seat is La Grange. The county is named for Colonel William Oldham.
Oldham County is part of the Louisville/Jefferson County, KY–IN Metropolitan Statistical Area.