| Westfield - Population Characteristics | FIPS Code=19090 |
| 1970 | 1980 | 1990 | |
| Population Density (Persons per Square Mile) | 19.74 | 22.00 | 10.60 |
| Total Population | 375 | 418 | 422 |
| Per Cent of Popualtion Born within Vermont | 92.23 | 73.30 | 69.00 |
| Number of Families | 82 | 108 | 125 |
| Per Cent of Population Aged 18 or Younger | 47.15 | 32.06 | 23.22 |
| Per Cent of Population Aged 18 to 64 | 43.26 | 59.33 | 61.61 |
| Per Cent of Population Aged 65 or Older | 9.59 | 8.61 | 15.17 |