| Groton - Population Characteristics | FIPS Code=05020 |
| 1970 | 1980 | 1990 | |
| Population Density (Persons per Square Mile) | 0.13 | 0.13 | 16.00 |
| Total Population | 666 | 667 | 862 |
| Per Cent of Popualtion Born within Vermont | 160 | 186 | 246 |
| Number of Families | 76.41 | 62.52 | 49.40 |
| Per Cent of Population Aged 18 or Younger | 34.09 | 31.03 | 30.30 |
| Per Cent of Population Aged 18 to 64 | 51.86 | 58.03 | 58.04 |
| Per Cent of Population Aged 65 or Older | 14.05 | 10.94 | 11.66 |