13 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Jeffersonville | Clark County | 54,581 |
| Jasper | Dubois County | 17,091 |
| Jasonville | Greene County | 2,011 |
| Jonesboro | Grant County | 1,502 |
| Jimmerson Lake | 1,324 | |
| Jamestown | Boone County | 975 |
| Johnson | 415 | |
| Judah | 217 | |
| Jonesville | Bartholomew County | 181 |
| Judyville | Warren County | 145 |
| Jalapa | Blackford County | 44 |
| Jerome | 38 | |
| Judson | Parke County | 36 |