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zipcodes.pro — ZIP/51331

51331

ZIP 51331 is Arnolds Park, Iowa, in Dickinson County; area code 712; Central time.

Type
Standard
Time zone
America/Chicago
County
Dickinson
Metro area
Spirit Lake, IA
Population
935
Coordinates
43.3596, -95.1308
☼ Live from 51331 — Arnolds Park, IA

Weather right now

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Local time: —

Where 51331 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 51331
  • 🔢 Type 51331 into a pocket calculator and turn it upside down: IEEIS — not quite a word, sorry.
  • ➕ As a number, 51,331 = 7 × 7333. Its digits add up to 13, a total 1,179 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100100010000011
  • 🏠 Its numerical neighbours: 51301 (Spencer, IA, 14 mi away) and 51333 (Dickens, IA, 17 mi away).
  • 🔄 Backwards, 51331 becomes 13315 — and that is a real ZIP code: Burlington Flats, NY, 1,008 miles away.
  • 👥 11 other ZIP codes are made of exactly the same digits (13135, 13153, 13315, 15133, 15313, 15331, …). The farthest-flung twin is 33151 in Miami, FL, 1,474 miles away.
  • 🧭 Farther north than 85% of all ZIP codes, and farther west than 69%.
  • 🎯302 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 51331 and you would come out at 43.36°S, 84.87°E — 810 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 58m.
  • 📏 At 1.6 square miles of land, 51331 is bigger than 10% of ZIP codes — room for about 1.2 Central Parks.
🌙 The sky over 51331 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population935This ZIP935
Households522This ZIP522
Housing units1,618This ZIP1,618
Median age64.8This ZIP64.8Iowa38.6US 38.9
Median household income$89,167This ZIP$89,167Iowa$75,059US $80,734
Median home value$448,800This ZIP$448,800Iowa$208,000US $332,700
Median gross rent$497This ZIP$497Iowa$972US $1,413
Bachelor's degree or higher40.7%This ZIP40.7%
Mean commute16.8 minThis ZIP16.8 min
Population density582.6 / sq miThis ZIP582.6 / sq mi

Business and tax activity

Business establishments92This ZIP92
Employees605This ZIP605
Annual payroll$27,108,000This ZIP$27,108,000
Tax returns filed680This ZIP680
Total adjusted gross income$82,285,000This ZIP$82,285,000

Land area

Land area1.61 sq miThis ZIP1.61 sq mi
Water area0.91 sq miThis ZIP0.91 sq mi

Other place names in 51331

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

ZIP codes near 51331

ZIPCityDistance
51355 Okoboji, IA 2.1 mi
51351 Milford, IA 4.1 mi
51360 Spirit Lake, IA 5.6 mi
51340 Fostoria, IA 8.3 mi
51364 Terril, IA 9.4 mi
51347 Lake Park, IA 10.4 mi
51363 Superior, IA 10.6 mi
51338 Everly, IA 14.2 mi
51301 Spencer, IA 14.3 mi
51345 Harris, IA 16.0 mi

Find every ZIP code within 10 miles of 51331 →

Questions about this ZIP code

Where is ZIP code 51331?

51331 is in Arnolds Park, Iowa, in Dickinson County, part of the Spirit Lake, IA micropolitan area. Its published point location is 43.3596, -95.1308.

What county is 51331 in?

51331 lies in Dickinson County.

What area code is 51331?

Arnolds Park uses area code 712, from NANPA's telephone records.

What time zone is 51331 in?

51331 uses America/Chicago.

How many people live in 51331?

About 935 people live in ZIP code 51331, in 522 households, at 582.6 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 51331?

$89,167 a year, against $75,059 across Iowa.

What ZIP codes are near 51331?

The closest are 51355 (2.1 mi), 51351 (4.1 mi), 51360 (5.6 mi), 51340 (8.3 mi) and 51364 (9.4 mi).

Is 51331 a PO Box ZIP code?

51331 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “51331 ZIP Code — Arnolds Park, Iowa (Dickinson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51331

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