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zipcodes.pro — ZIP/52631

52631

ZIP 52631 is Houghton, Iowa, in Lee County; area code 319; Central time.

Type
Standard
Time zone
America/Chicago
County
Lee
Metro area
Fort Madison, IA
Population
65
Coordinates
40.7831, -91.6124
☼ Live from 52631 — Houghton, IA

Weather right now

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Local time: —

Where 52631 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 52631
  • 🔢 Type 52631 into a pocket calculator and turn it upside down: IEgZS — not quite a word, sorry.
  • ➕ 52631 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 17, a total 2,133 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100110110010111
  • 🏠 Its numerical neighbours: 52630 (Hillsboro, IA, 5 mi away) and 52632 (Keokuk, IA, 26 mi away).
  • 🔄 Backwards, 52631 becomes 13625 — and that is a real ZIP code: Colton, NY, 886 miles away.
  • 👥 55 other ZIP codes are made of exactly the same digits (12563, 13625, 13652, 15236, 15362, 15623, …). The farthest-flung twin is 12563 in Patterson, NY, 938 miles away.
  • 🧭 Farther north than 64% of all ZIP codes, and farther west than 60%.
  • 🎯373 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 52631 and you would come out at 40.78°S, 88.39°E — 1,062 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 06m of daylight. Shortest: 9h 15m.
  • 📏 At 0.202 square miles of land, 52631 is bigger than 3% of ZIP codes — about 98 football fields.
🌙 The sky over 52631 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population65This ZIP65
Households26This ZIP26
Housing units26This ZIP26
Median age42.8This ZIP42.8Iowa38.6US 38.9
Median household income$107,083This ZIP$107,083Iowa$75,059US $80,734
Median home value$255,600This ZIP$255,600Iowa$208,000US $332,700
Bachelor's degree or higher42.0%This ZIP42.0%
Mean commute18.4 minThis ZIP18.4 min
Population density321.8 / sq miThis ZIP321.8 / sq mi

Business and tax activity

Business establishments20This ZIP20
Employees243This ZIP243
Annual payroll$16,615,000This ZIP$16,615,000

Land area

Land area0.20 sq miThis ZIP0.20 sq mi
Water area0.00 sq mi

Other place names in 52631

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

ZIP codes near 52631

ZIPCityDistance
52649 Salem, IA 3.8 mi
52648 Pilot Grove, IA 4.2 mi
52630 Hillsboro, IA 4.5 mi
52657 Saint Paul, IA 5.1 mi
52625 Donnellson, IA 8.7 mi
52656 West Point, IA 8.7 mi
52620 Bonaparte, IA 11.2 mi
52626 Farmington, IA 11.7 mi
52651 Stockport, IA 11.9 mi
52642 Rome, IA 14.1 mi

Find every ZIP code within 10 miles of 52631 →

Questions about this ZIP code

Where is ZIP code 52631?

52631 is in Houghton, Iowa, in Lee County, part of the Fort Madison, IA micropolitan area. Its published point location is 40.7831, -91.6124.

What county is 52631 in?

52631 lies in Lee County.

What area code is 52631?

Houghton uses area code 319, from NANPA's telephone records.

What time zone is 52631 in?

52631 uses America/Chicago.

How many people live in 52631?

About 65 people live in ZIP code 52631, in 26 households, at 321.8 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 52631?

$107,083 a year, against $75,059 across Iowa.

What ZIP codes are near 52631?

The closest are 52649 (3.8 mi), 52648 (4.2 mi), 52630 (4.5 mi), 52657 (5.1 mi) and 52625 (8.7 mi).

Is 52631 a PO Box ZIP code?

52631 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “52631 ZIP Code — Houghton, Iowa (Lee County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/52631

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