41 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Anderson | Madison County | 55,509 |
| Avon | Hendricks County | 25,928 |
| Auburn | DeKalb County | 14,127 |
| Angola | Steuben County | 9,519 |
| Alexandria | Madison County | 5,175 |
| Austin | Scott County | 4,229 |
| Aurora | Dearborn County | 3,525 |
| Attica | Fountain County | 3,352 |
| Avilla | Noble County | 2,495 |
| Albany | Delaware County | 2,277 |
| Albion | Noble County | 2,225 |
| Ardmore | 2,089 | |
| Aberdeen | Porter County | 1,726 |
| Argos | Marshall County | 1,725 |
| Arcadia | Hamilton County | 1,448 |
| Akron | Fulton County | 1,105 |
| Andrews | Huntington County | 1,055 |
| Ashley | DeKalb County | 1,053 |
| Atlanta | Hamilton County | 762 |
| Advance | Boone County | 507 |
| Arlington | Rush County | 478 |
| Amity | 421 | |
| Amo | Hendricks County | 420 |
| Anoka | 368 | |
| Avoca | Lawrence County | 362 |
| Andersonville | 339 | |
| Adams Lake | 338 | |
| Abington | 319 | |
| Amboy | Miami County | 302 |
| Arcola | Allen County | 296 |
| Americus | Carroll County | 252 |
| Arthur | 248 | |
| Adams | 238 | |
| Alford | 234 | |
| Ambia | Benton County | 227 |
| Altona | DeKalb County | 220 |
| Antioch | 201 | |
| Azalia | 175 | |
| Alamo | Montgomery County | 66 |
| Alfordsville | Daviess County | 63 |
| Alton | Crawford County | 27 |