18 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Kokomo | Howard County | 60,353 |
| Kendallville | Noble County | 10,354 |
| Knox | Starke County | 3,612 |
| Knightstown | Henry County | 2,164 |
| Kouts | Porter County | 2,072 |
| Kentland | Newton County | 1,622 |
| Kingsford Heights | LaPorte County | 1,319 |
| Koontz Lake | LaPorte County | 1,139 |
| Kirklin | Clinton County | 710 |
| Knightsville | Clay County | 691 |
| Kingman | Fountain County | 567 |
| Kewanna | Fulton County | 551 |
| Kimmell | Noble County | 468 |
| Kennard | Henry County | 449 |
| Kempton | Tipton County | 275 |
| Kingsbury | LaPorte County | 184 |
| Keystone | Wells County | 113 |
| Kramer | Fountain County | 63 |