Florence County, Wisconsin ZIP codes
2 ZIP codes are in Florence County, plus 2 that cross in from neighboring counties. It's part of the Iron Mountain, MI-WI micro area.
- ZIP codes
- 2
- Population in these ZIPs
- 3,470
- Avg. median income
- $58,500population-weighted
- Cities & towns
- 2
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Florence County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 54120 | Fence | 213 | $53,906 | $209,000 |
| 54121 | Florence | 3,257 | $58,750 | $218,800 |
ZIP codes partly in Florence County
These ZIP codes are mostly in a neighboring county but cover part of Florence County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 54151 | Niagara | Marinette County | 3,411 | $69,511 | $185,500 |
| 54542 | Long Lake | Forest County | 702 | $46,607 | $156,800 |
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 and towns in Florence County
Nearby counties
Frequently asked questions
How many ZIP codes are in Florence County, Wisconsin?
2 ZIP codes are mainly in Florence County, and 2 more ZIP codes from neighboring areas reach partly into it.
What cities are in Florence County?
ZIP codes in Florence County use the city names Fence and Florence.
What metro area is Florence County in?
Florence County is part of the Iron Mountain, MI-WI micropolitan statistical area.