This was 12.5 percent lower than the state average of 42.6 percent. In 2020 the total municipality population reached 690.
94.7 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Fairfield for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 23 | 5.3 |
| Regular high school diploma | 151 | 34.5 |
| GED or alternative credential | 11 | 2.5 |
| Some college, less than 1 year | 21 | 4.8 |
| Some college, 1 or more years, no degree | 100 | 22.8 |
| Associate's degree | 24 | 5.5 |
| Bachelor's degree | 73 | 16.7 |
| Master's degree | 35 | 8 |
| Professional school degree | 0 | 0 |
| Doctorate degree | 0 | 0 |
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