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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/53511

53511

ZIP 53511 is in Beloit, Wisconsin, in Rock County; area code 608; Central time. Beloit has 2 ZIP codes; the other is 53512.

Type
Standard
Time zone
America/Chicago
County
Rock
Population
48,701
Coordinates
42.5464, -89.1067
☼ Live from 53511 — Beloit, WI

Weather right now

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Local time: —

Where 53511 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 53511
  • 🔢 Type 53511 into a pocket calculator and turn it upside down: IISES — not quite a word, sorry.
  • ➕ As a number, 53,511 = 3 × 17837. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1101000100000111
  • 🏠 Its numerical neighbours: 53510 (Belmont, WI, 63 mi away) and 53512 (Beloit, WI, 5 mi away).
  • 🔄 Backwards, 53511 becomes 11535, which is not a ZIP code at all.
  • 👥 18 other ZIP codes are made of exactly the same digits (11355, 11553, 13155, 15135, 15315, 15351, …). The farthest-flung twin is 31551 in Mershon, GA, 851 miles away.
  • 🧭 Farther north than 79% of all ZIP codes, and farther west than 53%.
  • 🎯527 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 53511 and you would come out at 42.55°S, 90.89°E — 1,094 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 18m of daylight. Shortest: 9h 03m.
  • 📏 At 114.9 square miles of land, 53511 is bigger than 81% of ZIP codes — room for about 87 Central Parks.
🌙 The sky over 53511 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population48,701This ZIP48,701
Households18,392This ZIP18,392
Housing units19,477This ZIP19,477
Median age37.0This ZIP37.0Wisconsin40.2US 38.9
Median household income$67,067This ZIP$67,067Wisconsin$77,485US $80,734
Median home value$173,500This ZIP$173,500Wisconsin$266,500US $332,700
Median gross rent$1,057This ZIP$1,057Wisconsin$1,087US $1,413
Bachelor's degree or higher19.4%This ZIP19.4%
Mean commute23.2 minThis ZIP23.2 min
Population density424.0 / sq miThis ZIP424.0 / sq mi

Business and tax activity

Business establishments873This ZIP873
Employees20,564This ZIP20,564
Annual payroll$1,495,441,000This ZIP$1,495,441,000
Tax returns filed22,760This ZIP22,760
Total adjusted gross income$1,310,264,000This ZIP$1,310,264,000

Land area

Land area114.86 sq miThis ZIP114.86 sq mi
Water area1.25 sq miThis ZIP1.25 sq mi

Other place names in 53511

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

ZIP codes near 53511

ZIPCityDistance
53501 Afton, WI 4.3 mi
53512 Beloit, WI 4.6 mi
53542 Hanover, WI 6.5 mi
61072 Rockton, IL 7.4 mi
61080 South Beloit, IL 7.7 mi
53576 Orfordville, WI 8.5 mi
61079 Shirland, IL 8.5 mi
53548 Janesville, WI 10.0 mi
53537 Footville, WI 10.2 mi
61073 Roscoe, IL 10.2 mi

Find every ZIP code within 10 miles of 53511 →

Questions about this ZIP code

Where is ZIP code 53511?

53511 is in Beloit, Wisconsin, in Rock County, part of the Janesville-Beloit, WI metropolitan area. Its published point location is 42.5464, -89.1067.

What county is 53511 in?

53511 lies in Rock County.

What area code is 53511?

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

What time zone is 53511 in?

53511 uses America/Chicago.

How many people live in 53511?

About 48,701 people live in ZIP code 53511, in 18,392 households, at 424.0 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 53511?

$67,067 a year, against $77,485 across Wisconsin.

What ZIP codes are near 53511?

The closest are 53501 (4.3 mi), 53512 (4.6 mi), 53542 (6.5 mi), 61072 (7.4 mi) and 61080 (7.7 mi).

Is 53511 a PO Box ZIP code?

53511 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “53511 ZIP Code — Beloit, Wisconsin (Rock County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/53511

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