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zipcodes.pro — ZIP/61231

61231

ZIP 61231 is Aledo, Illinois, in Mercer County; area code 309; Central time.

Type
Standard
Time zone
America/Chicago
County
Mercer
Population
4,962
Coordinates
41.2107, -90.7178
☼ Live from 61231 — Aledo, IL

Weather right now

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Local time: —

Where 61231 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 61231
  • 🔢 Type 61231 into a pocket calculator and turn it upside down: IEZIg — not quite a word, sorry.
  • ➕ 61231 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 13, a total 1,179 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110111100101111
  • 🏠 Its numerical neighbours: 61230 (Albany, IL, 45 mi away) and 61232 (Andalusia, IL, 15 mi away).
  • 🔄 Backwards, 61231 becomes 13216, which is not a ZIP code at all.
  • 👥 31 other ZIP codes are made of exactly the same digits (11236, 11362, 12136, 13126, 13162, 13261, …). The farthest-flung twin is 32116 in Daytona Beach, FL, 999 miles away.
  • 🧭 Farther north than 68% of all ZIP codes, and farther west than 58%.
  • 🎯424 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 61231 and you would come out at 41.21°S, 89.28°E — 1,079 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 09m of daylight. Shortest: 9h 12m.
  • 📏 At 153.5 square miles of land, 61231 is bigger than 87% of ZIP codes — room for about 117 Central Parks.
🌙 The sky over 61231 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population4,962This ZIP4,962
Households2,128This ZIP2,128
Housing units2,317This ZIP2,317
Median age42.2This ZIP42.2Illinois39.0US 38.9
Median household income$70,991This ZIP$70,991Illinois$83,390US $80,734
Median home value$147,600This ZIP$147,600Illinois$263,300US $332,700
Median gross rent$815This ZIP$815Illinois$1,274US $1,413
Bachelor's degree or higher25.3%This ZIP25.3%
Mean commute21.3 minThis ZIP21.3 min
Population density32.3 / sq miThis ZIP32.3 / sq mi

Business and tax activity

Business establishments156This ZIP156
Employees1,696This ZIP1,696
Annual payroll$72,026,000This ZIP$72,026,000
Tax returns filed2,440This ZIP2,440
Total adjusted gross income$181,285,000This ZIP$181,285,000

Land area

Land area153.48 sq miThis ZIP153.48 sq mi
Water area0.08 sq miThis ZIP0.08 sq mi

Other place names in 61231

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

ZIP codes near 61231

ZIPCityDistance
61263 Matherville, IL 7.4 mi
61486 Viola, IL 7.4 mi
61279 Reynolds, IL 8.0 mi
61260 Joy, IL 9.0 mi
61476 Seaton, IL 10.2 mi
61276 Preemption, IL 10.4 mi
61412 Alexis, IL 11.6 mi
61237 Buffalo Prairie, IL 11.8 mi
61281 Sherrard, IL 12.0 mi
61465 New Windsor, IL 12.4 mi

Find every ZIP code within 10 miles of 61231 →

Questions about this ZIP code

Where is ZIP code 61231?

61231 is in Aledo, Illinois, in Mercer County, part of the Davenport-Moline-Rock Island, IA-IL metropolitan area. Its published point location is 41.2107, -90.7178.

What county is 61231 in?

61231 lies in Mercer County.

What area code is 61231?

Aledo uses area code 309, from NANPA's telephone records.

What time zone is 61231 in?

61231 uses America/Chicago.

How many people live in 61231?

About 4,962 people live in ZIP code 61231, in 2,128 households, at 32.3 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 61231?

$70,991 a year, against $83,390 across Illinois.

What ZIP codes are near 61231?

The closest are 61263 (7.4 mi), 61486 (7.4 mi), 61279 (8 mi), 61260 (9 mi) and 61476 (10.2 mi).

Is 61231 a PO Box ZIP code?

61231 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “61231 ZIP Code — Aledo, Illinois (Mercer County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/61231

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