14 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Fort Dodge | 1 | 24,409 | 24,864 | -0.37% | 1,525 | 16.01 | City |
| Gowrie | 2 | 921 | 955 | -0.75% | 640 | 1.44 | City |
| Dayton | 3 | 749 | 774 | -0.66% | 879 | 0.85 | City |
| Coalville | 4 | 572 | 645 | -0.52% | 262 | 2.18 | CDP |
| Badger | 5 | 537 | 524 | 0.56% | 477 | 1.13 | City |
| Otho | 6 | 401 | 425 | -1.23% | 905 | 0.44 | City |
| Lehigh | 7 | 385 | 399 | -0.77% | 182 | 2.11 | City |
| Duncombe | 8 | 364 | 379 | -0.82% | 185 | 1.96 | City |
| Callender | 9 | 351 | 371 | -1.13% | 667 | 0.53 | City |
| Harcourt | 10 | 249 | 264 | -1.19% | 246 | 1.01 | City |
| Barnum | 11 | 179 | 176 | 0.56% | 479 | 0.37 | City |
| Moorland | 12 | 165 | 170 | -0.6% | 111 | 1.49 | City |
| Clare | 13 | 133 | 140 | -0.75% | 268 | 0.50 | City |
| Vincent | 14 | 120 | 129 | -1.64% | 462 | 0.26 | City |
Fort Dodge is the largest city in Webster County, with a population of 24,409.
Vincent is the smallest city in Webster County.
There are 14 cities in Webster County, Iowa.