5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Sebastian | 1 | 27,577 | 25,125 | 1.81% | 1,585 | 17 | City |
| Vero Beach | 2 | 17,838 | 16,426 | 1.61% | 1,551 | 11 | City |
| Fellsmere | 3 | 5,076 | 4,834 | 0.95% | 88 | 58 | City |
| Indian River Shores | 4 | 4,518 | 4,255 | 1.16% | 882 | 5 | Town |
| Orchid | 5 | 552 | 516 | 1.28% | 447 | 1 | Town |
Sebastian is the largest city in Indian River County, with a population of 27,577.
Orchid is the smallest city in Indian River County, with a population of 552.
There are 5 cities in Indian River County, Florida.