40 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Anderson | Madison County | 56,366 |
| Avon | Hendricks County | 26,275 |
| Auburn | DeKalb County | 14,215 |
| Angola | Steuben County | 9,465 |
| Alexandria | Madison County | 5,244 |
| Austin | Scott County | 4,208 |
| Aurora | Dearborn County | 3,534 |
| Attica | Fountain County | 3,344 |
| Avilla | Noble County | 2,519 |
| Albany | Delaware County | 2,291 |
| Albion | Noble County | 2,271 |
| Ardmore | 2,224 | |
| Argos | Marshall County | 1,739 |
| Aberdeen | Porter County | 1,735 |
| Arcadia | Hamilton County | 1,439 |
| Akron | Fulton County | 1,074 |
| Andrews | Huntington County | 1,067 |
| Ashley | DeKalb County | 1,048 |
| Atlanta | Hamilton County | 745 |
| Advance | Boone County | 517 |
| Arlington | Rush County | 504 |
| Anoka | 492 | |
| Amo | Hendricks County | 431 |
| Amity | 416 | |
| Arthur | 383 | |
| Adams Lake | 350 | |
| Amboy | Miami County | 307 |
| Avoca | Lawrence County | 289 |
| Alford | 279 | |
| Abington | 256 | |
| Ambia | Benton County | 236 |
| Antioch | 224 | |
| Andersonville | 222 | |
| Altona | DeKalb County | 221 |
| Arcola | Allen County | 171 |
| Adams | 129 | |
| Alamo | Montgomery County | 68 |
| Alfordsville | Daviess County | 66 |
| Azalia | 38 | |
| Alton | Crawford County | 30 |