| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Danville | 1 | 27,902 | 29,124 | -0.84% | 1,563 | 18 | City |
| Hoopeston | 2 | 4,625 | 4,899 | -1.09% | 1,255 | 4 | City |
| Westville | 3 | 2,997 | 3,167 | -1.06% | 1,786 | 2 | Village |
| Georgetown | 4 | 2,975 | 3,141 | -1.03% | 1,841 | 2 | City |
| Tilton | 5 | 2,513 | 2,642 | -0.95% | 661 | 4 | Village |
| Catlin | 6 | 1,896 | 1,983 | -0.84% | 2,233 | 1 | Village |
| Oakwood | 7 | 1,263 | 1,320 | -0.86% | 1,361 | 1 | Village |
| Rossville | 8 | 1,157 | 1,225 | -1.11% | 828 | 1 | Village |
| Ridge Farm | 9 | 744 | 786 | -1.06% | 243 | 3 | Village |
| Potomac | 10 | 649 | 685 | -1.07% | 1,330 | 0 | Village |
| Fairmount | 11 | 586 | 616 | -1.01% | 1,849 | 0 | Village |
| Bismarck | 12 | 574 | 583 | -0.52% | 773 | 1 | Village |
| Fithian | 13 | 469 | 494 | -1.05% | 1,225 | 0 | Village |
| Sidell | 14 | 468 | 496 | -1.27% | 505 | 1 | Village |
| Rankin | 15 | 467 | 492 | -1.06% | 807 | 1 | Village |
| Belgium | 16 | 350 | 361 | -0.57% | 806 | 0 | Village |
| Allerton | 17 | 237 | 251 | -1.25% | 349 | 1 | Village |
| Indianola | 18 | 217 | 229 | -0.91% | 559 | 0 | Village |
| Alvan (Alvin) | 19 | 212 | 225 | -1.4% | 267 | 1 | Village |
| Henning | 20 | 200 | 209 | -0.99% | 131 | 2 | Village |
| Muncie | 21 | 148 | 158 | -1.33% | 827 | 0 | Village |
Danville is the largest city in Vermilion County, with a population of 27,902.
Muncie is the smallest city in Vermilion County, with a population of 148.
There are 21 cities in Vermilion County, Illinois.