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zipcodes.pro — ZIP/51557

51557

ZIP 51557 is Mondamin, Iowa, mostly in Harrison County; area code 712; Central time.

Type
Standard
Time zone
America/Chicago
County
Harrison +1 more
Metro area
Omaha, NE-IA
Population
828
Coordinates
41.7336, -96.0064
☼ Live from 51557 — Mondamin, IA

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Local time: —

Where 51557 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 51557
  • 🔢 Type 51557 into a pocket calculator and turn it upside down: LSSIS — not quite a word, sorry.
  • ➕ As a number, 51,557 = 11 × 43 × 109. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100100101100101
  • 🏠 Its numerical neighbours: 51556 (Modale, IA, 7 mi away) and 51558 (Moorhead, IA, 14 mi away).
  • 🔄 Backwards, 51557 becomes 75515, which is not a ZIP code at all.
  • 👥 9 other ZIP codes are made of exactly the same digits (15557, 17555, 51575, 55175, 55571, 55751, …). The farthest-flung twin is 17555 in Narvon, PA, 1,050 miles away.
  • 🧭 Farther north than 73% of all ZIP codes, and farther west than 71%.
  • 🎯188 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 51557 and you would come out at 41.73°S, 83.99°E — 847 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 13m of daylight. Shortest: 9h 08m.
  • 📏 At 75.3 square miles of land, 51557 is bigger than 71% of ZIP codes — room for about 57 Central Parks.
🌙 The sky over 51557 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population828This ZIP828
Households351This ZIP351
Housing units416This ZIP416
Median age41.5This ZIP41.5Iowa38.6US 38.9
Median household income$76,250This ZIP$76,250Iowa$75,059US $80,734
Median home value$161,000This ZIP$161,000Iowa$208,000US $332,700
Median gross rent$890This ZIP$890Iowa$972US $1,413
Bachelor's degree or higher27.4%This ZIP27.4%
Mean commute26.2 minThis ZIP26.2 min
Population density11.0 / sq miThis ZIP11.0 / sq mi

Business and tax activity

Business establishments10This ZIP10
Employees26This ZIP26
Annual payroll$982,000This ZIP$982,000
Tax returns filed380This ZIP380
Total adjusted gross income$27,475,000This ZIP$27,475,000

Land area

Land area75.27 sq miThis ZIP75.27 sq mi
Water area0.73 sq miThis ZIP0.73 sq mi

Counties 51557 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Harrison County 89.7%
Burt County 10.3%

Other place names in 51557

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

ZIP codes near 51557

ZIPCityDistance
51556 Modale, IA 6.5 mi
51564 Pisgah, IA 6.8 mi
51550 Magnolia, IA 7.4 mi
51545 Little Sioux, IA 8.1 mi
68061 Tekamah, NE 12.1 mi
51555 Missouri Valley, IA 12.9 mi
51523 Blencoe, IA 12.9 mi
51546 Logan, IA 14.1 mi
51558 Moorhead, IA 14.2 mi
68029 Herman, NE 14.8 mi

Find every ZIP code within 10 miles of 51557 →

Questions about this ZIP code

Where is ZIP code 51557?

51557 is in Mondamin, Iowa, in Harrison County, part of the Omaha, NE-IA metropolitan area. Its published point location is 41.7336, -96.0064.

What county is 51557 in?

51557 spans 2 counties: Harrison County and Burt County. Most of it falls in Harrison County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 51557?

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

What time zone is 51557 in?

51557 uses America/Chicago.

How many people live in 51557?

About 828 people live in ZIP code 51557, in 351 households, at 11.0 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 51557?

$76,250 a year, against $75,059 across Iowa.

What ZIP codes are near 51557?

The closest are 51556 (6.5 mi), 51564 (6.8 mi), 51550 (7.4 mi), 51545 (8.1 mi) and 68061 (12.1 mi).

Is 51557 a PO Box ZIP code?

51557 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “51557 ZIP Code — Mondamin, Iowa (Harrison County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51557

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