18 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Kokomo | Howard County | 60,223 |
| Kendallville | Noble County | 10,340 |
| Knox | Starke County | 3,621 |
| Knightstown | Henry County | 2,161 |
| Kouts | Porter County | 2,065 |
| Kentland | Newton County | 1,624 |
| Kingsford Heights | LaPorte County | 1,321 |
| Koontz Lake | LaPorte County | 1,316 |
| Kirklin | Clinton County | 710 |
| Knightsville | Clay County | 692 |
| Kingman | Fountain County | 566 |
| Kewanna | Fulton County | 555 |
| Kimmell | Noble County | 461 |
| Kennard | Henry County | 450 |
| Kempton | Tipton County | 277 |
| Kingsbury | LaPorte County | 185 |
| Keystone | Wells County | 125 |
| Kramer | Fountain County | 70 |