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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/53581

53581

ZIP 53581 is Richland Center, Wisconsin, in Richland County; area code 608; Central time.

Type
Standard
Time zone
America/Chicago
County
Richland
Metro area
none
Population
10,176
Coordinates
43.3767, -90.4195
☼ Live from 53581 — Richland Center, WI

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Local time: —

Where 53581 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 53581
  • 🔢 Type 53581 into a pocket calculator and turn it upside down: IBSES — not quite a word, sorry.
  • ➕ As a number, 53,581 = 11 × 4871. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1101000101001101
  • 🏠 Its numerical neighbours: 53580 (Rewey, WI, 36 mi away) and 53582 (Ridgeway, WI, 33 mi away).
  • 🔄 Backwards, 53581 becomes 18535, which is not a ZIP code at all.
  • 👥 20 other ZIP codes are made of exactly the same digits (15358, 15538, 15853, 18355, 31558, 35185, …). The farthest-flung twin is 85351 in Sun City, AZ, 1,356 miles away.
  • 🧭 Farther north than 85% of all ZIP codes, and farther west than 57%.
  • 🎯487 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 53581 and you would come out at 43.38°S, 89.58°E — 1,007 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 24m of daylight. Shortest: 8h 57m.
  • 📏 At 232.4 square miles of land, 53581 is bigger than 92% of ZIP codes — room for about 176 Central Parks.
🌙 The sky over 53581 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population10,176This ZIP10,176
Households4,354This ZIP4,354
Housing units4,934This ZIP4,934
Median age46.5This ZIP46.5Wisconsin40.2US 38.9
Median household income$64,833This ZIP$64,833Wisconsin$77,485US $80,734
Median home value$196,100This ZIP$196,100Wisconsin$266,500US $332,700
Median gross rent$724This ZIP$724Wisconsin$1,087US $1,413
Bachelor's degree or higher21.9%This ZIP21.9%
Mean commute21.6 minThis ZIP21.6 min
Population density43.8 / sq miThis ZIP43.8 / sq mi

Business and tax activity

Business establishments293This ZIP293
Employees3,873This ZIP3,873
Annual payroll$171,112,000This ZIP$171,112,000
Tax returns filed4,430This ZIP4,430
Total adjusted gross income$281,415,000This ZIP$281,415,000

Land area

Land area232.40 sq miThis ZIP232.40 sq mi
Water area0.11 sq miThis ZIP0.11 sq mi

Other place names in 53581

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

ZIP codes near 53581

ZIPCityDistance
53584 Sextonville, WI 9.2 mi
53924 Cazenovia, WI 10.8 mi
53540 Gotham, WI 12.4 mi
53518 Blue River, WI 12.9 mi
53556 Lone Rock, WI 13.0 mi
54664 Viola, WI 13.6 mi
53573 Muscoda, WI 13.7 mi
53937 Hillpoint, WI 13.8 mi
53942 Lime Ridge, WI 14.1 mi
54634 Hillsboro, WI 14.2 mi

Find every ZIP code within 10 miles of 53581 →

Questions about this ZIP code

Where is ZIP code 53581?

53581 is in Richland Center, Wisconsin, in Richland County. Its published point location is 43.3767, -90.4195.

What county is 53581 in?

53581 lies in Richland County.

What area code is 53581?

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

What time zone is 53581 in?

53581 uses America/Chicago.

How many people live in 53581?

About 10,176 people live in ZIP code 53581, in 4,354 households, at 43.8 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 53581?

$64,833 a year, against $77,485 across Wisconsin.

What ZIP codes are near 53581?

The closest are 53584 (9.2 mi), 53924 (10.8 mi), 53540 (12.4 mi), 53518 (12.9 mi) and 53556 (13 mi).

Is 53581 a PO Box ZIP code?

53581 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “53581 ZIP Code — Richland Center, Wisconsin (Richland County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/53581

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