| City | County | 2026 Pop. ↓ |
|---|---|---|
| Kokomo | Howard County | 60,116 |
| Kendallville | Noble County | 10,397 |
| Knox | Starke County | 3,591 |
| Knightstown | Henry County | 2,168 |
| Kouts | Porter County | 2,055 |
| Kentland | Newton County | 1,628 |
| Kingsford Heights | LaPorte County | 1,498 |
| Koontz Lake | LaPorte County | 1,139 |
| Kirklin | Clinton County | 718 |
| Knightsville | Clay County | 669 |
| Kingman | Fountain County | 565 |
| Kewanna | Fulton County | 559 |
| Kimmell | Noble County | 468 |
| Kennard | Henry County | 446 |
| Kempton | Tipton County | 279 |
| Kingsbury | LaPorte County | 184 |
| Keystone | Wells County | 113 |
| Kramer | Fountain County | 63 |