This was 0.3 percent higher than the state average of 38 percent. In 2020 the total municipality population reached 10,269.
96.9 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in Smithville for 2020*
| Degree | Number of people | Percentage of population | 
|---|---|---|
| No degree | 204 | 3.1 | 
| Regular high school diploma | 1,826 | 27.9 | 
| GED or alternative credential | 232 | 3.5 | 
| Some college, less than 1 year | 682 | 10.4 | 
| Some college, 1 or more years, no degree | 1,094 | 16.7 | 
| Associate's degree | 722 | 11 | 
| Bachelor's degree | 1,386 | 21.2 | 
| Master's degree | 244 | 3.7 | 
| Professional school degree | 92 | 1.4 | 
| Doctorate degree | 63 | 1 | 

 
               
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