| City | County | 2026 Pop. ↓ |
|---|---|---|
| Russellville | Franklin County | 10,897 |
| Rainbow City | Cherokee County | 10,444 |
| Robertsdale | Baldwin County | 7,973 |
| Rainsville | DeKalb County | 6,131 |
| Redland | Elmore County | 5,576 |
| Roanoke | Randolph County | 5,466 |
| Red Bay | Franklin County | 3,183 |
| Remlap | Blount County | 2,916 |
| Riverside | St. Clair County | 2,331 |
| Rehobeth | Geneva County | 2,297 |
| Ragland | St. Clair County | 1,715 |
| Rogersville | Lauderdale County | 1,465 |
| Reform | Pickens County | 1,411 |
| Rock Creek | Jefferson County | 1,280 |
| Redstone Arsenal | Madison County | 746 |
| Reeltown | Elmore County | 672 |
| Reece City | Etowah County | 619 |
| Ray | Coosa County | 498 |
| River Falls | Covington County | 498 |
| Ranburne | Cleburne County | 448 |
| Red Level | Covington County | 431 |
| Rock Mills | Chambers County | 399 |
| Rosa | Blount County | 380 |
| Rutledge | Crenshaw County | 345 |
| Rockford | Coosa County | 344 |
| Repton | Conecuh County | 216 |
| Riverview | Conecuh County | 162 |
| Ridgeville | DeKalb County | 82 |