- Location: Washington County, Missouri
- Legal status: Fourth-class city
- Population: 2,662 (Change since 1990: -0.8%)
- Founded: 1813 by Moses Austin
- Name origin: Potosi, Bolivia
- Located near intersections of MO 8, MO 21, and MO 185
- Latitude: 37°56'16" N (+37.9379)
- Longitude: 90°46'55" W (-90.7819)
- Civil township: Breton
- Land area: 2.2 square miles
As the crow flies, Potosi is...
Name origin
Named after Potosi, Bolivia, a silver
mining town. "Potosi" is a South American Indian word for "place of much noise".
Timeline
- ca. 1763
- Francis "The Breton" Azor discovered an outcropping of lead and received a land grant to open a mine. The village of Mine au Breton sprung up around the mine.
- ca. 1797
- Moses Austin received a large land grant and started to make improvements to the area.
- 1813
- Potosi founded by Moses Austin as the county seat for Washington County.
- 1826
- Potosi and Mine Au Breton incorporated into one town.
| Year | Population | Percent change |
|---|
| 1900 | 638 | -- |
| 1910 | 772 | +21.0% |
| 1920 | 984 | +27.5% |
| 1930 | 1,279 | +30.0% |
| 1940 | 2,017 | +57.7% |
| 1950 | 2,359 | +17.0% |
| 1960 | 2,805 | +18.9% |
| 1970 | 2,761 | -1.6% |
| 1980 | 2,528 | -8.4% |
| 1990 | 2,683 | +6.1% |
| 2000 | 2,662 | -0.8% |