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ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/54937

54937

ZIP 54937 is in Fond Du Lac, Wisconsin, in Fond du Lac County; area code 920; Central time. Fond Du Lac has 3 ZIP codes; the others are 54935 and 54936.

Type
Standard
Time zone
America/Chicago
County
Fond du Lac
Metro area
Fond du Lac, WI
Population
21,687
Coordinates
43.7241, -88.3982
☼ Live from 54937 — Fond Du Lac, WI

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Local time: —

Where 54937 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 54937
  • 🔢 Type 54937 into a pocket calculator and turn it upside down: LEGhS — not quite a word, sorry.
  • ➕ As a number, 54,937 = 137 × 401. Its digits add up to 28, a total 1,520 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1101011010011001
  • 🏠 Its numerical neighbours: 54936 (Fond Du Lac, WI, 4 mi away) and 54940 (Fremont, WI, 41 mi away).
  • 🔄 Backwards, 54937 becomes 73945 — and that is a real ZIP code: Hooker, OK, 826 miles away.
  • 👥 51 other ZIP codes are made of exactly the same digits (34759, 34957, 35749, 35974, 39457, 39475, …). The farthest-flung twin is 95437 in Fort Bragg, CA, 1,833 miles away.
  • 🧭 Farther north than 86% of all ZIP codes, and farther west than 52%.
  • 🎯589 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 54937 and you would come out at 43.72°S, 91.60°E — 1,083 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 27m of daylight. Shortest: 8h 55m.
  • 📏 At 120.1 square miles of land, 54937 is bigger than 82% of ZIP codes — room for about 91 Central Parks.
🌙 The sky over 54937 today
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🌋 Shake report
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Source: USGS.

People and housing

Population21,687This ZIP21,687
Households8,887This ZIP8,887
Housing units9,284This ZIP9,284
Median age46.5This ZIP46.5Wisconsin40.2US 38.9
Median household income$81,841This ZIP$81,841Wisconsin$77,485US $80,734
Median home value$272,200This ZIP$272,200Wisconsin$266,500US $332,700
Median gross rent$1,132This ZIP$1,132Wisconsin$1,087US $1,413
Bachelor's degree or higher23.1%This ZIP23.1%
Mean commute21.5 minThis ZIP21.5 min
Population density180.6 / sq miThis ZIP180.6 / sq mi

Business and tax activity

Business establishments399This ZIP399
Employees7,972This ZIP7,972
Annual payroll$414,917,000This ZIP$414,917,000
Tax returns filed10,710This ZIP10,710
Total adjusted gross income$1,096,091,000This ZIP$1,096,091,000

Land area

Land area120.11 sq miThis ZIP120.11 sq mi
Water area0.88 sq miThis ZIP0.88 sq mi

Other place names in 54937

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

ZIP codes near 54937

ZIPCityDistance
54935 Fond Du Lac, WI 3.9 mi
54936 Fond Du Lac, WI 4.1 mi
53019 Eden, WI 5.1 mi
53065 Oakfield, WI 9.2 mi
53057 Mount Calvary, WI 9.4 mi
53006 Brownsville, WI 9.9 mi
53010 Campbellsport, WI 10.0 mi
53048 Lomira, WI 10.8 mi
53079 Saint Cloud, WI 11.7 mi
54979 Van Dyne, WI 12.4 mi

Find every ZIP code within 10 miles of 54937 →

Questions about this ZIP code

Where is ZIP code 54937?

54937 is in Fond Du Lac, Wisconsin, in Fond du Lac County, part of the Fond du Lac, WI metropolitan area. Its published point location is 43.7241, -88.3982.

What county is 54937 in?

54937 lies in Fond du Lac County.

What area code is 54937?

Fond Du Lac uses area code 920, from NANPA's telephone records.

What time zone is 54937 in?

54937 uses America/Chicago.

How many people live in 54937?

About 21,687 people live in ZIP code 54937, in 8,887 households, at 180.6 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 54937?

$81,841 a year, against $77,485 across Wisconsin.

What ZIP codes are near 54937?

The closest are 54935 (3.9 mi), 54936 (4.1 mi), 53019 (5.1 mi), 53065 (9.2 mi) and 53057 (9.4 mi).

Is 54937 a PO Box ZIP code?

54937 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “54937 ZIP Code — Fond Du Lac, Wisconsin (Fond du Lac County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/54937

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