This was 5.7 percent lower than the state average of 41.1 percent. In 2020 the total municipality population reached 6,600.
86.5 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 | 649 | 13.5 |
| Regular high school diploma | 1,234 | 25.7 |
| GED or alternative credential | 171 | 3.6 |
| Some college, less than 1 year | 441 | 9.2 |
| Some college, 1 or more years, no degree | 605 | 12.6 |
| Associate's degree | 392 | 8.2 |
| Bachelor's degree | 905 | 18.9 |
| Master's degree | 274 | 5.7 |
| Professional school degree | 110 | 2.3 |
| Doctorate degree | 16 | 0.3 |

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