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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/54303

54303

ZIP 54303 is in Green Bay, Wisconsin, in Brown County; area codes 920 and 274; Central time. Green Bay has 12 ZIP codes in all.

Type
Standard
Time zone
America/Chicago
County
Brown
Metro area
Green Bay, WI
Population
28,153
Coordinates
44.5433, -88.0472
☼ Live from 54303 — Green Bay, WI

Weather right now

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Local time: —

Where 54303 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 54303
  • 🔢 Type 54303 into a pocket calculator and turn it upside down: EOEhS — not quite a word, sorry.
  • ➕ As a number, 54,303 = 3 × 23 × 787. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1101010000011111
  • 🏠 Its numerical neighbours: 54302 (Green Bay, WI, 4 mi away) and 54304 (Green Bay, WI, 4 mi away).
  • 🔄 Backwards, 54303 becomes 30345 — and that is a real ZIP code: Atlanta, GA, 765 miles away.
  • 👥 29 other ZIP codes are made of exactly the same digits (03435, 04353, 05343, 30345, 30354, 30453, …). The farthest-flung twin is 34035 in APO AA, a military post office, 5,841 miles away.
  • 🧭 Farther north than 89% of all ZIP codes, and farther west than 51%.
  • 🎯629 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 54303 and you would come out at 44.54°S, 91.95°E — 1,073 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 33m of daylight. Shortest: 8h 49m.
  • 📏 At 11.5 square miles of land, 54303 is bigger than 29% of ZIP codes — room for about 8.7 Central Parks.
🌙 The sky over 54303 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population28,153This ZIP28,153
Households12,626This ZIP12,626
Housing units13,316This ZIP13,316
Median age35.6This ZIP35.6Wisconsin40.2US 38.9
Median household income$60,781This ZIP$60,781Wisconsin$77,485US $80,734
Median home value$178,600This ZIP$178,600Wisconsin$266,500US $332,700
Median gross rent$888This ZIP$888Wisconsin$1,087US $1,413
Bachelor's degree or higher19.3%This ZIP19.3%
Mean commute18.4 minThis ZIP18.4 min
Population density2,449.6 / sq miThis ZIP2,449.6 / sq mi

Business and tax activity

Business establishments888This ZIP888
Employees16,901This ZIP16,901
Annual payroll$845,784,000This ZIP$845,784,000
Tax returns filed13,630This ZIP13,630
Total adjusted gross income$656,685,000This ZIP$656,685,000

Land area

Land area11.49 sq miThis ZIP11.49 sq mi
Water area0.98 sq miThis ZIP0.98 sq mi

Other place names in 54303

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

ZIP codes near 54303

ZIPCityDistance
54306 Green Bay, WI 2.1 mi
54308 Green Bay, WI 2.1 mi
54304 Green Bay, WI 3.6 mi
54302 Green Bay, WI 4.3 mi
54313 Green Bay, WI 4.4 mi
54301 Green Bay, WI 4.6 mi
54307 Green Bay, WI 5.1 mi
54305 Green Bay, WI 6.1 mi
54324 Green Bay, WI 6.1 mi
54173 Suamico, WI 6.9 mi

Find every ZIP code within 10 miles of 54303 →

Questions about this ZIP code

Where is ZIP code 54303?

54303 is in Green Bay, Wisconsin, in Brown County, part of the Green Bay, WI metropolitan area. Its published point location is 44.5433, -88.0472.

What county is 54303 in?

54303 lies in Brown County.

What area code is 54303?

Green Bay uses area codes 920 and 274, from NANPA's telephone records.

What time zone is 54303 in?

54303 uses America/Chicago.

How many people live in 54303?

About 28,153 people live in ZIP code 54303, in 12,626 households, at 2,449.6 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 54303?

$60,781 a year, against $77,485 across Wisconsin.

What ZIP codes are near 54303?

The closest are 54306 (2.1 mi), 54308 (2.1 mi), 54304 (3.6 mi), 54302 (4.3 mi) and 54313 (4.4 mi).

Is 54303 a PO Box ZIP code?

54303 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “54303 ZIP Code — Green Bay, Wisconsin (Brown County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/54303

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