Identifiers: city
| Rank | Community | Population |
|---|---|---|
| 1 | Oskaloosa (city), IA | 11,558 |
| 2 | Pella (city), IA | 10,464 |
| 3 | Knoxville (city), IA | 7,595 |
| 4 | Monroe (city), IA | 1,967 |
| 5 | New Sharon (city), IA | 1,262 |
| 6 | Eddyville (city), IA | 970 |
| 7 | Fremont (city), IA | 708 |
| 8 | What Cheer (city), IA | 607 |
| 9 | University Park (city), IA | 487 |
| 10 | Beacon (city), IA | 445 |
| 11 | Delta (city), IA | 264 |
| 12 | Harvey (city), IA | 236 |
| 13 | Leighton (city), IA | 158 |
| 14 | Kirkville (city), IA | 157 |
| 15 | Rose Hill (city), IA | 157 |
| 16 | Keomah Village (city), IA | 110 |
| 17 | Chillicothe (city), IA | 76 |
Identifiers: city
| Rank | Community | Population |
|---|---|---|
| 1 | Oskaloosa (city), IA | 11,558 |
| 2 | Pella (city), IA | 10,464 |
| 3 | Knoxville (city), IA | 7,595 |
| 4 | Monroe (city), IA | 1,967 |
| 5 | New Sharon (city), IA | 1,262 |
| 6 | Eddyville (city), IA | 970 |
| 7 | Fremont (city), IA | 708 |
| 8 | What Cheer (city), IA | 607 |
| 9 | University Park (city), IA | 487 |
| 10 | Beacon (city), IA | 445 |
| 11 | Bussey (city), IA | 387 |
| 12 | Delta (city), IA | 264 |
| 13 | Harvey (city), IA | 236 |
| 14 | Leighton (city), IA | 158 |
| 15 | Kirkville (city), IA | 157 |
| 16 | Rose Hill (city), IA | 157 |
| 17 | Keomah Village (city), IA | 110 |
| 18 | Chillicothe (city), IA | 76 |
Identifiers: city
| Rank | Community | Population |
|---|---|---|
| 1 | Ottumwa (city), IA | 25,529 |
| 2 | Oskaloosa (city), IA | 11,558 |
| 3 | Pella (city), IA | 10,464 |
| 4 | Knoxville (city), IA | 7,595 |
| 5 | Monroe (city), IA | 1,967 |
| 6 | New Sharon (city), IA | 1,262 |
| 7 | Eddyville (city), IA | 970 |
| 8 | Fremont (city), IA | 708 |
| 9 | What Cheer (city), IA | 607 |
| 10 | University Park (city), IA | 487 |
| 11 | Beacon (city), IA | 445 |
| 12 | Bussey (city), IA | 387 |
| 13 | Delta (city), IA | 264 |
| 14 | Harvey (city), IA | 236 |
| 15 | Leighton (city), IA | 158 |
| 16 | Kirkville (city), IA | 157 |
| 17 | Rose Hill (city), IA | 157 |
| 18 | Keomah Village (city), IA | 110 |
| 19 | Chillicothe (city), IA | 76 |