| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Elizabethtown | 1 | 36,218 | 31,408 | 2.17% | 1,279 | 28 | City |
| Radcliff | 2 | 22,481 | 23,021 | -0.42% | 1,683 | 13 | City |
| Vine Grove | 3 | 7,098 | 6,609 | 1.14% | 1,034 | 7 | City |
| West Point | 4 | 884 | 950 | -1.23% | 332 | 3 | City |
| Upton | 5 | 700 | 708 | -0.28% | 515 | 1 | City |
| Sonora | 6 | 560 | 580 | -0.71% | 297 | 2 | City |
Elizabethtown is the largest city in Hardin County, with a population of 36,218.
Sonora is the smallest city in Hardin County, with a population of 560.
There are 6 cities in Hardin County, Kentucky.