This was 35 percent lower than the state average of 41.9 percent. In 2020 the total municipality population reached 608.
83.2 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Atlantic for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 78 | 16.8 |
| Regular high school diploma | 212 | 45.7 |
| GED or alternative credential | 40 | 8.6 |
| Some college, less than 1 year | 38 | 8.2 |
| Some college, 1 or more years, no degree | 64 | 13.8 |
| Associate's degree | 0 | 0 |
| Bachelor's degree | 17 | 3.7 |
| Master's degree | 10 | 2.2 |
| Professional school degree | 5 | 1.1 |
| Doctorate degree | 0 | 0 |
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