| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| West Branch | 1 | 3,049 | 2,510 | 3.15% | 1,186 | 3 | City |
| Tipton | 2 | 3,036 | 3,161 | -0.78% | 1,501 | 2 | City |
| Durant | 3 | 1,782 | 1,877 | -1% | 1,444 | 1 | City |
| Clarence | 4 | 985 | 1,037 | -1.1% | 1,294 | 1 | City |
| Mechanicsville | 5 | 967 | 1,016 | -1.02% | 1,174 | 1 | City |
| Lowden | 6 | 761 | 802 | -1.04% | 709 | 1 | City |
| Stanwood | 7 | 606 | 639 | -1.14% | 761 | 1 | City |
| Bennett | 8 | 324 | 348 | -1.52% | 1,565 | 0 | City |
| Toronto | 9 | 99 | 102 | -1% | 544 | 0 | City |
West Branch is the largest city in Cedar County, with a population of 3,049.
Toronto is the smallest city in Cedar County, with a population of 99.
There are 9 cities in Cedar County, Iowa.