This was 1.9 percent lower than the state average of 48.4 percent. In 2020 the total municipality population reached 2,589.
95.7 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Barnesville for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 68 | 4.3 |
| Regular high school diploma | 389 | 24.7 |
| GED or alternative credential | 28 | 1.8 |
| Some college, less than 1 year | 112 | 7.1 |
| Some college, 1 or more years, no degree | 248 | 15.7 |
| Associate's degree | 291 | 18.4 |
| Bachelor's degree | 367 | 23.3 |
| Master's degree | 58 | 3.7 |
| Professional school degree | 5 | 0.3 |
| Doctorate degree | 12 | 0.8 |
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