| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Tama | 1 | 2,993 | 3,087 | -0.6% | 1,007 | 3 | City |
| Toledo | 2 | 2,388 | 2,363 | 0.17% | 1,041 | 2 | City |
| Traer | 3 | 1,548 | 1,575 | -0.45% | 1,201 | 1 | City |
| Dysart | 4 | 1,266 | 1,277 | -0.16% | 1,012 | 1 | City |
| Gladbrook | 5 | 774 | 800 | -0.64% | 1,110 | 1 | City |
| Garwin | 6 | 465 | 483 | -0.85% | 462 | 1 | City |
| Clutier | 7 | 208 | 213 | -0.48% | 277 | 1 | City |
| Chelsea | 8 | 206 | 214 | -0.96% | 203 | 1 | City |
| Montour | 9 | 196 | 202 | -0.51% | 429 | 0 | City |
| Elberon | 10 | 177 | 181 | -0.56% | 270 | 1 | City |
| Lincoln | 11 | 119 | 121 | -0.83% | 212 | 1 | City |
| Vining | 12 | 52 | 54 | -1.89% | 94 | 1 | City |
Tama is the largest city in Tama County, with a population of 2,993.
Vining is the smallest city in Tama County, with a population of 52.
There are 12 cities in Tama County, Iowa.