Founded in 1823, Oldham County is one of 120 counties in the state of Kentucky. Historically, Oldham County was formed from Henry County, Jefferson County and Shelby County. The city of La Grange is the county seat. With FIPS code of 185, Oldham County has a population of 68,685 and area of 189 square miles (490 km2).
List of all cities in Oldham County, KY alphabetically
| City/Town | Postal Code | Area Code |
| Ballardsville, KY | 40014 | 502 |
| Buckner, KY | 40010 | 502 |
| Crestwood, KY | 40014 | 502 |
| Goshen, KY | 40026 | 502 |
| Ky State Reformatory, KY | 40032 | 502 |
| La Grange, KY | 40031 | 502 |
| 40032 | 502 | |
| Pewee Valley, KY | 40056 | 502 |
| Westport, KY | 40077 | 502 |