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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/53546

53546

ZIP 53546 is in Janesville, Wisconsin, in Rock County; area code 608; Central time. Janesville has 4 ZIP codes; the others are 53545, 53547 and 53548.

Type
Standard
Time zone
America/Chicago
County
Rock
Population
29,867
Coordinates
42.6522, -88.9482
☼ Live from 53546 — Janesville, WI

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Where 53546 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 53546
  • 🔢 Type 53546 into a pocket calculator and turn it upside down: ghSES — not quite a word, sorry.
  • ➕ As a number, 53,546 = 2 × 41 × 653. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1101000100101010
  • 🏠 Its numerical neighbours: 53545 (Janesville, WI, 8 mi away) and 53547 (Janesville, WI, 7 mi away).
  • 🔄 Backwards, 53546 becomes 64535, which is not a ZIP code at all.
  • 👥 34 other ZIP codes are made of exactly the same digits (34655, 35456, 35546, 35564, 35645, 35654, …). The farthest-flung twin is 34655 in New Port Richey, FL, 1,058 miles away.
  • 🧭 Farther north than 80% of all ZIP codes, and farther west than 53%.
  • 🎯537 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 53546 and you would come out at 42.65°S, 91.05°E — 1,097 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 19m of daylight. Shortest: 9h 02m.
  • 📏 At 81.1 square miles of land, 53546 is bigger than 73% of ZIP codes — room for about 62 Central Parks.
🌙 The sky over 53546 today
  • Working out the sun…
🌋 Shake report
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Source: USGS.

People and housing

Population29,867This ZIP29,867
Households12,314This ZIP12,314
Housing units12,837This ZIP12,837
Median age41.0This ZIP41.0Wisconsin40.2US 38.9
Median household income$75,825This ZIP$75,825Wisconsin$77,485US $80,734
Median home value$239,400This ZIP$239,400Wisconsin$266,500US $332,700
Median gross rent$1,043This ZIP$1,043Wisconsin$1,087US $1,413
Bachelor's degree or higher26.3%This ZIP26.3%
Mean commute21.9 minThis ZIP21.9 min
Population density368.3 / sq miThis ZIP368.3 / sq mi

Business and tax activity

Business establishments600This ZIP600
Employees15,784This ZIP15,784
Annual payroll$911,404,000This ZIP$911,404,000
Tax returns filed15,970This ZIP15,970
Total adjusted gross income$1,126,874,000This ZIP$1,126,874,000

Land area

Land area81.11 sq miThis ZIP81.11 sq mi
Water area0.49 sq miThis ZIP0.49 sq mi

Other place names in 53546

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

ZIP codes near 53546

ZIPCityDistance
53505 Avalon, WI 6.5 mi
53547 Janesville, WI 6.8 mi
53501 Afton, WI 7.3 mi
53545 Janesville, WI 7.6 mi
53563 Milton, WI 8.9 mi
53525 Clinton, WI 9.1 mi
53548 Janesville, WI 9.6 mi
53114 Darien, WI 10.7 mi
53512 Beloit, WI 10.8 mi
53542 Hanover, WI 10.8 mi

Find every ZIP code within 10 miles of 53546 →

Questions about this ZIP code

Where is ZIP code 53546?

53546 is in Janesville, Wisconsin, in Rock County, part of the Janesville-Beloit, WI metropolitan area. Its published point location is 42.6522, -88.9482.

What county is 53546 in?

53546 lies in Rock County.

What area code is 53546?

Janesville uses area code 608, from NANPA's telephone records.

What time zone is 53546 in?

53546 uses America/Chicago.

How many people live in 53546?

About 29,867 people live in ZIP code 53546, in 12,314 households, at 368.3 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 53546?

$75,825 a year, against $77,485 across Wisconsin.

What ZIP codes are near 53546?

The closest are 53505 (6.5 mi), 53547 (6.8 mi), 53501 (7.3 mi), 53545 (7.6 mi) and 53563 (8.9 mi).

Is 53546 a PO Box ZIP code?

53546 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “53546 ZIP Code — Janesville, Wisconsin (Rock County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/53546

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