| Grand Isle - Population Characteristics | FIPS Code=13010 |
| 1970 | 1980 | 1990 | |
| Population Density (Persons per Square Mile) | 62.23 | 95.23 | 96.60 |
| Total Population | 809 | 1238 | 1642 |
| Per Cent of Popualtion Born within Vermont | 85.24 | 66.48 | 63.50 |
| Number of Families | 212 | 339 | 468 |
| Per Cent of Population Aged 18 or Younger | 27.37 | 29.56 | 24.42 |
| Per Cent of Population Aged 18 to 64 | 62.12 | 61.64 | 66.02 |
| Per Cent of Population Aged 65 or Older | 10.49 | 8.80 | 9.56 |