29 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Louisville | Jefferson County | 645,270 |
| Lexington | Fayette County | 332,841 |
| Lawrenceburg | Anderson County | 12,416 |
| Lyndon | Jefferson County | 11,328 |
| La Grange | Oldham County | 10,777 |
| London | Laurel County | 7,572 |
| Leitchfield | Grayson County | 6,954 |
| Lebanon | Marion County | 6,691 |
| Ludlow | Kenton County | 4,390 |
| Lancaster | Garrard County | 4,172 |
| Lakeside Park | Kenton County | 2,858 |
| Louisa | Lawrence County | 2,432 |
| Liberty | Casey County | 1,986 |
| Lebanon Junction | Bullitt County | 1,851 |
| Lewisport | Hancock County | 1,728 |
| Ledbetter | Livingston County | 1,618 |
| Livermore | McLean County | 1,193 |
| Lynnview | Jefferson County | 965 |
| Langdon Place | Jefferson County | 897 |
| La Center | Ballard County | 857 |
| Lewisburg | Logan County | 787 |
| Loretto | Marion County | 706 |
| Lynch | Harlan County | 575 |
| Loyall | Harlan County | 570 |
| Lakeview Heights | Carter County | 272 |
| LaFayette | Christian County | 170 |
| Livingston | Rockcastle County | 165 |
| Lowes | Graves County | 155 |
| Lincolnshire | Jefferson County | 141 |