4 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| La Grange | 1 | 10,777 | 10,068 | 1.11% | 1,493 | 7 | City |
| Crestwood | 2 | 6,640 | 6,198 | 1.13% | 1,641 | 4 | City |
| Pewee Valley | 3 | 1,693 | 1,590 | 1.01% | 876 | 2 | City |
| Goshen | 4 | 953 | 893 | 1.06% | 4,838 | 0 | City |
La Grange is the largest city in Oldham County, with a population of 10,777.
Goshen is the smallest city in Oldham County, with a population of 953.
There are 4 cities in Oldham County, Kentucky.