Identifiers: city · town · CDP
| Rank | Community | Population |
|---|---|---|
| 1 | Lafayette (city), IN | 70,783 |
| 2 | West Lafayette (city), IN | 44,595 |
| 3 | Delphi (city), IN | 2,961 |
| 4 | Battle Ground (town), IN | 1,838 |
| 5 | Shadeland (town), IN | 1,757 |
| 6 | Brookston (town), IN | 1,631 |
| 7 | Rossville (town), IN | 1,508 |
| 8 | Dayton (town), IN | 1,330 |
| 9 | Mulberry (town), IN | 1,231 |
| 10 | Oxford (town), IN | 1,165 |
| 11 | Otterbein (town), IN | 1,144 |
| 12 | Linden (town), IN | 711 |
| 13 | Clarks Hill (town), IN | 600 |
| 14 | Chalmers (town), IN | 523 |
| 15 | Stockwell (CDP), IN | 494 |
| 16 | Americus (CDP), IN | 431 |
| 17 | West Point (CDP), IN | 318 |
| 18 | Romney (CDP), IN | 304 |
| 19 | Wingate (town), IN | 237 |
| 20 | Pine Village (town), IN | 212 |