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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/54904

54904

ZIP 54904 is in Oshkosh, Wisconsin, mostly in Winnebago County; area code 920; Central time. Oshkosh has 5 ZIP codes; the others are 54901, 54902, 54903 and 54906.

Type
Standard
Time zone
America/Chicago
County
Winnebago +1 more
Metro area
Oshkosh-Neenah, WI
Population
22,273
Coordinates
44.0234, -88.6238
☼ Live from 54904 — Oshkosh, WI

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Local time: —

Where 54904 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 54904
  • 🔢 Type 54904 into a pocket calculator and turn it upside down: hOGhS — not quite a word, sorry.
  • ➕ As a number, 54,904 = 2 × 2 × 2 × 6863. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1101011001111000
  • 🏠 Its numerical neighbours: 54903 (Oshkosh, WI, 3 mi away) and 54906 (Oshkosh, WI, 3 mi away).
  • 🔄 Backwards, 54904 becomes 40945, which is not a ZIP code at all.
  • 👥 26 other ZIP codes are made of exactly the same digits (04459, 04495, 04549, 04945, 04954, 05449, …). The farthest-flung twin is 95044 in Redwood Estates, CA, 1,800 miles away.
  • 🧭 Farther north than 87% of all ZIP codes, and farther west than 52%.
  • 🎯588 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 54904 and you would come out at 44.02°S, 91.38°E — 1,064 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 29m of daylight. Shortest: 8h 53m.
  • 📏 At 77.9 square miles of land, 54904 is bigger than 72% of ZIP codes — room for about 59 Central Parks.
🌙 The sky over 54904 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population22,273This ZIP22,273
Households9,719This ZIP9,719
Housing units10,112This ZIP10,112
Median age46.7This ZIP46.7Wisconsin40.2US 38.9
Median household income$93,341This ZIP$93,341Wisconsin$77,485US $80,734
Median home value$281,000This ZIP$281,000Wisconsin$266,500US $332,700
Median gross rent$940This ZIP$940Wisconsin$1,087US $1,413
Bachelor's degree or higher41.8%This ZIP41.8%
Mean commute18.9 minThis ZIP18.9 min
Population density286.0 / sq miThis ZIP286.0 / sq mi

Business and tax activity

Business establishments543This ZIP543
Employees12,478This ZIP12,478
Annual payroll$634,808,000This ZIP$634,808,000
Tax returns filed11,670This ZIP11,670
Total adjusted gross income$1,102,761,000This ZIP$1,102,761,000

Land area

Land area77.88 sq miThis ZIP77.88 sq mi
Water area8.33 sq miThis ZIP8.33 sq mi

Counties 54904 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Winnebago County 99.5%
Fond du Lac County 0.5%

Other place names in 54904

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

ZIP codes near 54904

ZIPCityDistance
54903 Oshkosh, WI 3.3 mi
54906 Oshkosh, WI 3.3 mi
54901 Oshkosh, WI 5.2 mi
54927 Butte Des Morts, WI 5.7 mi
54985 Winnebago, WI 6.3 mi
54902 Oshkosh, WI 6.7 mi
54963 Omro, WI 7.3 mi
54980 Waukau, WI 7.5 mi
54986 Winneconne, WI 8.9 mi
54964 Pickett, WI 9.5 mi

Find every ZIP code within 10 miles of 54904 →

Questions about this ZIP code

Where is ZIP code 54904?

54904 is in Oshkosh, Wisconsin, in Winnebago County, part of the Oshkosh-Neenah, WI metropolitan area. Its published point location is 44.0234, -88.6238.

What county is 54904 in?

54904 spans 2 counties: Winnebago County and Fond du Lac County. Most of it falls in Winnebago County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 54904?

Oshkosh uses area code 920, from NANPA's telephone records.

What time zone is 54904 in?

54904 uses America/Chicago.

How many people live in 54904?

About 22,273 people live in ZIP code 54904, in 9,719 households, at 286.0 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 54904?

$93,341 a year, against $77,485 across Wisconsin.

What ZIP codes are near 54904?

The closest are 54903 (3.3 mi), 54906 (3.3 mi), 54901 (5.2 mi), 54927 (5.7 mi) and 54985 (6.3 mi).

Is 54904 a PO Box ZIP code?

54904 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “54904 ZIP Code — Oshkosh, Wisconsin (Winnebago County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/54904

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