This was 2.9 percent higher than the state average of 43.7 percent. In 2020 the total municipality population reached 1,468.
92.7 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Williamsville for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 75 | 7.3 |
| Regular high school diploma | 259 | 25.4 |
| GED or alternative credential | 10 | 1 |
| Some college, less than 1 year | 70 | 6.9 |
| Some college, 1 or more years, no degree | 131 | 12.8 |
| Associate's degree | 98 | 9.6 |
| Bachelor's degree | 238 | 23.3 |
| Master's degree | 125 | 12.2 |
| Professional school degree | 13 | 1.3 |
| Doctorate degree | 2 | 0.2 |
Alerts Sign-up