This was 13.8 percent higher than the state average of 43.2 percent. In 2020 the total municipality population reached 2,432.
99 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Hickman for 2020*
| Degree | Number of people | Percentage of population | 
|---|---|---|
| No degree | 14 | 1 | 
| Regular high school diploma | 185 | 13.3 | 
| GED or alternative credential | 75 | 5.4 | 
| Some college, less than 1 year | 124 | 8.9 | 
| Some college, 1 or more years, no degree | 201 | 14.4 | 
| Associate's degree | 224 | 16.1 | 
| Bachelor's degree | 343 | 24.6 | 
| Master's degree | 200 | 14.4 | 
| Professional school degree | 7 | 0.5 | 
| Doctorate degree | 20 | 1.4 | 

 
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