5 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Sebastian | 1 | 28,068 | 25,125 | 1.78% | 1,613 | 17 | City |
| Vero Beach | 2 | 18,121 | 16,426 | 1.59% | 1,576 | 11 | City |
| Fellsmere | 3 | 5,125 | 4,834 | 0.97% | 89 | 58 | City |
| Indian River Shores | 4 | 4,571 | 4,255 | 1.17% | 892 | 5 | Town |
| Orchid | 5 | 559 | 516 | 1.27% | 452 | 1 | Town |
Sebastian is the largest city in Indian River County, with a population of 28,068.
Orchid is the smallest city in Indian River County, with a population of 559.
There are 5 cities in Indian River County, Florida.