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zipcodes.pro — ZIP/54121

54121

ZIP 54121 is Florence, Wisconsin, in Florence County; area code 715; Central time.

Type
Standard
Time zone
America/Chicago
County
Florence
Population
3,257
Coordinates
45.8656, -88.3270
☼ Live from 54121 — Florence, WI

Weather right now

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Local time: —

Where 54121 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 54121
  • 🔢 Type 54121 into a pocket calculator and turn it upside down: IZIhS — not quite a word, sorry.
  • ➕ 54121 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 13, a total 1,179 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1101001101101001
  • 🏠 Its numerical neighbours: 54120 (Fence, WI, 12 mi away) and 54123 (Forest Junction, WI, 115 mi away).
  • 🔄 Backwards, 54121 becomes 12145, which is not a ZIP code at all.
  • 👥 33 other ZIP codes are made of exactly the same digits (11245, 11425, 11542, 12154, 12451, 12514, …). The farthest-flung twin is 11542 in Glen Cove, NY, 813 miles away.
  • 🧭 Farther north than 93% of all ZIP codes, and farther west than 52%.
  • 🎯665 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 54121 and you would come out at 45.87°S, 91.67°E — 1,024 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 44m of daylight. Shortest: 8h 39m.
  • 📏 At 272.0 square miles of land, 54121 is bigger than 94% of ZIP codes — room for about 207 Central Parks.
🌙 The sky over 54121 today
  • Working out the sun…
🌋 Shake report
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Source: USGS.

People and housing

Population3,257This ZIP3,257
Households1,580This ZIP1,580
Housing units3,264This ZIP3,264
Median age55.0This ZIP55.0Wisconsin40.2US 38.9
Median household income$58,750This ZIP$58,750Wisconsin$77,485US $80,734
Median home value$189,600This ZIP$189,600Wisconsin$266,500US $332,700
Median gross rent$731This ZIP$731Wisconsin$1,087US $1,413
Bachelor's degree or higher28.2%This ZIP28.2%
Mean commute18.8 minThis ZIP18.8 min
Population density12.0 / sq miThis ZIP12.0 / sq mi

Business and tax activity

Business establishments83This ZIP83
Employees564This ZIP564
Annual payroll$17,723,000This ZIP$17,723,000
Tax returns filed1,560This ZIP1,560
Total adjusted gross income$119,093,000This ZIP$119,093,000

Land area

Land area272.04 sq miThis ZIP272.04 sq mi
Water area6.02 sq miThis ZIP6.02 sq mi

Other place names in 54121

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 54121

ZIPCityDistance
54120 Fence, WI 12.4 mi
49802 Kingsford, MI 12.6 mi
49902 Alpha, MI 13.0 mi
49801 Iron Mountain, MI 15.6 mi
49927 Gaastra, MI 15.7 mi
49876 Quinnesec, MI 17.4 mi
54103 Armstrong Creek, WI 18.3 mi
54119 Dunbar, WI 18.6 mi
49920 Crystal Falls, MI 18.9 mi
54151 Niagara, WI 19.0 mi

Find every ZIP code within 10 miles of 54121 →

Questions about this ZIP code

Where is ZIP code 54121?

54121 is in Florence, Wisconsin, in Florence County, part of the Iron Mountain, MI-WI micropolitan area. Its published point location is 45.8656, -88.3270.

What county is 54121 in?

54121 lies in Florence County.

What area code is 54121?

Florence uses area code 715, from NANPA's telephone records.

What time zone is 54121 in?

54121 uses America/Chicago.

How many people live in 54121?

About 3,257 people live in ZIP code 54121, in 1,580 households, at 12.0 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 54121?

$58,750 a year, against $77,485 across Wisconsin.

What ZIP codes are near 54121?

The closest are 54120 (12.4 mi), 49802 (12.6 mi), 49902 (13 mi), 49801 (15.6 mi) and 49927 (15.7 mi).

Is 54121 a PO Box ZIP code?

54121 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “54121 ZIP Code — Florence, Wisconsin (Florence County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/54121

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