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zipcodes.pro — STATE/WI/COUNTY/FLORENCE

Florence County, WI ZIP codes

Florence County, WI has 2 ZIP codes, in 2 towns: 54121 and 54120. 2 more cross into it from neighbouring counties: 54151 and 54542.

The county seat is Florence.

ZIP codes
2
Partly in it
2 more
Towns
2
County seat
Florence
County FIPS
55037
Population
4,646
Median household income
$61,086
Land area
488 sq mi
Metro area
Iron Mountain

Florence County ZIP codes by town

Florence (county seat)
54121

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Florence County

These ZIP codes lie mostly in a neighbouring county but each cover a twentieth or more of Florence County.

Map of Florence County ZIP codes

5412054121

The ZIP codes of Florence County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Florence County in numbers

About 4,646 people live in Florence County, in 2,197 households, the 71st most populous of Wisconsin's 72 counties. The median household income is $61,086 a year, 21% below the Wisconsin median of $77,485 (US: $80,734). The median owner-occupied home is valued at $173,200 (35% below the Wisconsin median), and median gross rent is $750 a month. The median age is 55.3; 25.0% of adults 25 and over hold a bachelor's degree or higher (33.4% across Wisconsin); the average commute takes 20 minutes.

Population4,646Florence4,646
Households2,197Florence2,197
Median age55.3Florence55.3Wisconsin40.2US 38.9
Median household income$61,086Florence$61,086Wisconsin$77,485US $80,734
Median home value$173,200Florence$173,200Wisconsin$266,500US $332,700
Median gross rent$750Florence$750Wisconsin$1,087US $1,413
Bachelor's degree or higher25.0%Florence25.0%Wisconsin33.4%US 35.7%
Mean commute20.1 minFlorence20.1 minWisconsin22.2 minUS 26.4 min
Population density10 / sq miFlorence10 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Florence County

Largest towns in Florence County
TownZIP codesPopulation
Florence 1 488
Fence 1 213

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Florence County.

Not sure you are in Florence County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Florence County, with figures

ZIP codes in Florence County
ZIP City Type Population Median income Median home
54120 Fence , WI Standard 213 $53,906 $168,100
54121 Florence , WI Standard 3,257 $58,750 $189,600

Cite this page

zipcodes.pro. “Florence County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/wi/county/florence

Underlying data is public domain or openly licensed — sources, vintages and licences.