7 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Grand Isle | 1 | 2,175 | 2,080 | 0.6% | 133 | 16 | Town |
| Alburgh | 2 | 2,166 | 2,101 | -0.09% | 74 | 29 | Town |
| South Hero | 3 | 1,732 | 1,669 | 0.29% | 116 | 15 | Town |
| North Hero | 4 | 977 | 939 | 0.41% | 73 | 13 | Town |
| Alburgh | 5 | 615 | 592 | 0.65% | 964 | 1 | Village |
| Isle La Motte | 6 | 497 | 486 | -0.2% | 63 | 8 | Town |
| South Hero | 7 | 202 | 150 | 6.88% | 187 | 1 | CDP |
Grand Isle is the largest city in Grand Isle County, with a population of 2,175.
South Hero is the smallest city in Grand Isle County, with a population of 202.
There are 7 cities in Grand Isle County, Vermont.