| Place Name | Potosi |
| Place Type | City |
| ZIP Code(s) | 63664 |
| County | Washington County |
| Area Code(s) | 573 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 2,688 |
| Population Growth Rate (2010-19) | -4.59% |
| Majority Ethnicity | White 97.19% |
| US Congressional District(s) | Missouri 8th |
| State House Districts | 118,144 |
| State Senate Districts | 3 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 97.19% |
| African American | 1.29% |
| Hispanic | 0.16% |
| Asian | 0.24% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.13% |