Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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/53512

53512

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

Type
No street area
Time zone
America/Chicago
County
Rock
Coordinates
42.5083, -89.0318

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 53511, whose figures describe that area — not this ZIP code.

☼ Live from 53512 — Beloit, WI

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Where 53512 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 53512
  • 🔢 Type 53512 into a pocket calculator and turn it upside down: ZISES — not quite a word, sorry.
  • ➕ As a number, 53,512 = 2 × 2 × 2 × 6689. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1101000100001000
  • 🏠 Its numerical neighbours: 53511 (Beloit, WI, 5 mi away) and 53515 (Black Earth, WI, 55 mi away).
  • 🔄 Backwards, 53512 becomes 21535, which is not a ZIP code at all.
  • 👥 28 other ZIP codes are made of exactly the same digits (12553, 15235, 15253, 15325, 15352, 15532, …). The farthest-flung twin is 31525 in Brunswick, GA, 876 miles away.
  • 🧭 Farther north than 79% of all ZIP codes, and farther west than 53%.
  • 🎯530 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 53512 and you would come out at 42.51°S, 90.97°E — 1,099 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.
🌙 The sky over 53512 today
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Source: USGS.

Business and tax activity

Business establishments6This ZIP6
Employees38This ZIP38
Annual payroll$2,344,000This ZIP$2,344,000

Land area

ZIP codes near 53512

ZIPCityDistance
61080 South Beloit, IL 3.1 mi
53511 Beloit, WI 4.6 mi
61073 Roscoe, IL 6.2 mi
53501 Afton, WI 6.9 mi
61072 Rockton, IL 7.1 mi
53525 Clinton, WI 9.7 mi
61115 Machesney Park, IL 10.1 mi
61079 Shirland, IL 10.1 mi
61011 Caledonia, IL 10.6 mi
53542 Hanover, WI 10.7 mi

Find every ZIP code within 10 miles of 53512 →

Questions about this ZIP code

Where is ZIP code 53512?

53512 is in Beloit, Wisconsin, in Rock County, part of the Janesville-Beloit, WI metropolitan area. Its published point location is 42.5083, -89.0318.

What county is 53512 in?

53512 lies in Rock County.

What area code is 53512?

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

What time zone is 53512 in?

53512 uses America/Chicago.

What ZIP codes are near 53512?

The closest are 61080 (3.1 mi), 53511 (4.6 mi), 61073 (6.2 mi), 53501 (6.9 mi) and 61072 (7.1 mi).

Is 53512 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “53512 ZIP Code — Beloit, Wisconsin (Rock County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/53512

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/53512.json

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