| City | County | 2026 Pop. ↓ |
|---|---|---|
| Jeffersonville | Clark County | 54,998 |
| Jasper | Dubois County | 17,363 |
| Jasonville | Greene County | 1,953 |
| Jonesboro | Grant County | 1,508 |
| Jimmerson Lake | Steuben County | 1,324 |
| Jamestown | Boone County | 965 |
| Johnson | Gibson County | 415 |
| Judah | Lawrence County | 217 |
| Jonesville | Bartholomew County | 183 |
| Judyville | Warren County | 145 |
| Jalapa | Blackford County | 44 |
| Jerome | Howard County | 38 |
| Judson | Parke County | 36 |