Potosi, WI ZIP code
The ZIP code for Potosi, Wisconsin is 53820. It is in Grant County.
- Population in these ZIPs
- 2,467
- Avg. median income
- $77,100population-weighted
- Typical home value
- $251,400population-weighted
- Metro area
- Platteville, WI
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Potosi, WI ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 53820 | 2,467 | $77,083 | $251,400 |
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
- Dickeyville 7 mi
- Kieler 10 mi
- Lancaster 10 mi
- Platteville 11 mi
- Cassville 11 mi
- Beetown 12 mi
- Cuba City 13 mi
- Hazel Green 14 mi
- Bloomington 16 mi
- Stitzer 16 mi
- Glen Haven 17 mi
- Belmont 19 mi
Frequently asked questions
What is the ZIP code for Potosi, WI?
The ZIP code for Potosi, WI is 53820.
What county is Potosi, Wisconsin in?
Potosi ZIP codes are in Grant County.