Potosi, MO ZIP code
The ZIP code for Potosi, Missouri is 63664. It is in Washington County.
- Population in these ZIPs
- 9,693
- Avg. median income
- $61,200population-weighted
- Typical home value
- $197,500population-weighted
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Potosi, MO ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 63664 | 9,693 | $61,216 | $197,500 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Potosi
- Belgrade 9 mi
- Mineral Point 11 mi
- Cadet 13 mi
- Caledonia 13 mi
- Irondale 14 mi
- Viburnum 15 mi
- Blackwell 15 mi
- Tiff 16 mi
- Belleview 16 mi
- Richwoods 17 mi
- Davisville 18 mi
- Steelville 18 mi
Frequently asked questions
What is the ZIP code for Potosi, MO?
The ZIP code for Potosi, MO is 63664.
What county is Potosi, Missouri in?
Potosi ZIP codes are in Washington County.