13 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Fort Dodge | 1 | 24,897 | 24,864 | 0.02% | 1,555 | 16 | City |
| Gowrie | 2 | 937 | 954 | -0.32% | 651 | 1 | City |
| Dayton | 3 | 762 | 774 | -0.26% | 894 | 1 | City |
| Badger | 4 | 546 | 527 | 0.55% | 485 | 1 | City |
| Otho | 5 | 412 | 426 | -0.48% | 930 | 0 | City |
| Lehigh | 6 | 393 | 399 | -0.25% | 186 | 2 | City |
| Duncombe | 7 | 371 | 379 | -0.27% | 189 | 2 | City |
| Callender | 8 | 356 | 370 | -0.56% | 677 | 1 | City |
| Harcourt | 9 | 253 | 264 | -0.78% | 250 | 1 | City |
| Barnum | 10 | 190 | 177 | 1.06% | 508 | 0 | City |
| Moorland | 11 | 168 | 170 | 0% | 113 | 1 | City |
| Clare | 12 | 132 | 135 | 0% | 266 | 0 | City |
| Vincent | 13 | 123 | 129 | -0.81% | 473 | 0 | City |
Fort Dodge is the largest city in Webster County, with a population of 24,897.
Vincent is the smallest city in Webster County, with a population of 123.
There are 13 cities in Webster County, Iowa.