6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Marshfield | 1 | 8,081 | 7,490 | 1.48% | 1,464 | 5.52 | City |
| Rogersville | 2 | 5,875 | 3,905 | 7.19% | 1,552 | 3.79 | City |
| Seymour | 3 | 1,949 | 1,848 | 1.04% | 559 | 3.48 | City |
| Fordland | 4 | 823 | 777 | 1.11% | 744 | 1.11 | City |
| Niangua | 5 | 417 | 394 | 1.21% | 1,017 | 0.41 | City |
| Diggins | 6 | 320 | 302 | 1.27% | 330 | 0.97 | Village |
Marshfield is the largest city in Webster County, with a population of 8,081.
Diggins is the smallest city in Webster County.
There are 6 cities in Webster County, Missouri.