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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/51546

51546

ZIP 51546 is Logan, Iowa, in Harrison County; area code 712; Central time.

Type
Standard
Time zone
America/Chicago
County
Harrison
Metro area
Omaha, NE-IA
Population
3,114
Coordinates
41.6371, -95.7661
☼ Live from 51546 — Logan, IA

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Local time: —

Where 51546 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 51546
  • 🔢 Type 51546 into a pocket calculator and turn it upside down: ghSIS — not quite a word, sorry.
  • ➕ As a number, 51,546 = 2 × 3 × 11 × 11 × 71. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100100101011010
  • 🏠 Its numerical neighbours: 51545 (Little Sioux, IA, 20 mi away) and 51548 (Mc Clelland, IA, 23 mi away).
  • 🔄 Backwards, 51546 becomes 64515, which is not a ZIP code at all.
  • 👥 31 other ZIP codes are made of exactly the same digits (14556, 15456, 15465, 15546, 15564, 41655, …). The farthest-flung twin is 14556 in Sonyea, NY, 920 miles away.
  • 🧭 Farther north than 72% of all ZIP codes, and farther west than 71%.
  • 🎯193 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 51546 and you would come out at 41.64°S, 84.23°E — 861 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 12m of daylight. Shortest: 9h 09m.
  • 📏 At 121.4 square miles of land, 51546 is bigger than 82% of ZIP codes — room for about 92 Central Parks.
🌙 The sky over 51546 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population3,114This ZIP3,114
Households1,131This ZIP1,131
Housing units1,277This ZIP1,277
Median age37.5This ZIP37.5Iowa38.6US 38.9
Median household income$86,910This ZIP$86,910Iowa$75,059US $80,734
Median home value$207,900This ZIP$207,900Iowa$208,000US $332,700
Median gross rent$909This ZIP$909Iowa$972US $1,413
Bachelor's degree or higher26.5%This ZIP26.5%
Mean commute30.1 minThis ZIP30.1 min
Population density25.6 / sq miThis ZIP25.6 / sq mi

Business and tax activity

Business establishments65This ZIP65
Employees546This ZIP546
Annual payroll$29,474,000This ZIP$29,474,000
Tax returns filed1,290This ZIP1,290
Total adjusted gross income$112,394,000This ZIP$112,394,000

Land area

Land area121.44 sq miThis ZIP121.44 sq mi
Water area0.13 sq miThis ZIP0.13 sq mi

Other place names in 51546

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

ZIP codes near 51546

ZIPCityDistance
51550 Magnolia, IA 6.8 mi
51579 Woodbine, IA 8.9 mi
51555 Missouri Valley, IA 9.4 mi
51563 Persia, IA 10.4 mi
51565 Portsmouth, IA 12.5 mi
51542 Honey Creek, IA 14.0 mi
51559 Neola, IA 14.1 mi
51557 Mondamin, IA 14.1 mi
51556 Modale, IA 14.2 mi
51564 Pisgah, IA 14.4 mi

Find every ZIP code within 10 miles of 51546 →

Questions about this ZIP code

Where is ZIP code 51546?

51546 is in Logan, Iowa, in Harrison County, part of the Omaha, NE-IA metropolitan area. Its published point location is 41.6371, -95.7661.

What county is 51546 in?

51546 lies in Harrison County.

What area code is 51546?

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

What time zone is 51546 in?

51546 uses America/Chicago.

How many people live in 51546?

About 3,114 people live in ZIP code 51546, in 1,131 households, at 25.6 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 51546?

$86,910 a year, against $75,059 across Iowa.

What ZIP codes are near 51546?

The closest are 51550 (6.8 mi), 51579 (8.9 mi), 51555 (9.4 mi), 51563 (10.4 mi) and 51565 (12.5 mi).

Is 51546 a PO Box ZIP code?

51546 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “51546 ZIP Code — Logan, Iowa (Harrison County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51546

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