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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/51533

51533

ZIP 51533 is Emerson, Iowa, mostly in Montgomery County; area code 712; Central time.

Type
Standard
Time zone
America/Chicago
County
Montgomery +1 more
Metro area
none
Population
844
Coordinates
41.0395, -95.3782
☼ Live from 51533 — Emerson, IA

Weather right now

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Local time: —

Where 51533 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 51533
  • 🔢 Type 51533 into a pocket calculator and turn it upside down: EESIS — not quite a word, sorry.
  • ➕ As a number, 51,533 = 29 × 1777. Its digits add up to 17, a total 2,133 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100100101001101
  • 🏠 Its numerical neighbours: 51532 (Elliott, IA, 16 mi away) and 51534 (Glenwood, IA, 18 mi away).
  • 🔄 Backwards, 51533 becomes 33515, which is not a ZIP code at all.
  • 👥 12 other ZIP codes are made of exactly the same digits (13355, 15353, 15533, 31535, 31553, 33155, …). The farthest-flung twin is 33155 in Miami, FL, 1,364 miles away.
  • 🧭 Farther north than 67% of all ZIP codes, and farther west than 69%.
  • 🎯188 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 51533 and you would come out at 41.04°S, 84.62°E — 904 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 08m of daylight. Shortest: 9h 13m.
  • 📏 At 79.9 square miles of land, 51533 is bigger than 72% of ZIP codes — room for about 61 Central Parks.
🌙 The sky over 51533 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population844This ZIP844
Households359This ZIP359
Housing units395This ZIP395
Median age44.8This ZIP44.8Iowa38.6US 38.9
Median household income$68,750This ZIP$68,750Iowa$75,059US $80,734
Median home value$136,500This ZIP$136,500Iowa$208,000US $332,700
Median gross rent$1,034This ZIP$1,034Iowa$972US $1,413
Bachelor's degree or higher13.1%This ZIP13.1%
Mean commute27.2 minThis ZIP27.2 min
Population density10.6 / sq miThis ZIP10.6 / sq mi

Business and tax activity

Business establishments17This ZIP17
Employees93This ZIP93
Annual payroll$4,555,000This ZIP$4,555,000
Tax returns filed370This ZIP370
Total adjusted gross income$28,844,000This ZIP$28,844,000

Land area

Land area79.92 sq miThis ZIP79.92 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Counties 51533 spans

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

CountyShare of this ZIP
Montgomery County 54.8%
Mills County 45.2%

Other place names in 51533

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

ZIP codes near 51533

ZIPCityDistance
51540 Hastings, IA 6.3 mi
51541 Henderson, IA 7.2 mi
51566 Red Oak, IA 7.9 mi
51549 Macedonia, IA 11.1 mi
51645 Imogene, IA 11.1 mi
51551 Malvern, IA 11.4 mi
51591 Red Oak, IA 11.6 mi
51525 Carson, IA 13.6 mi
51571 Silver City, IA 14.3 mi
51638 Essex, IA 15.1 mi

Find every ZIP code within 10 miles of 51533 →

Questions about this ZIP code

Where is ZIP code 51533?

51533 is in Emerson, Iowa, in Montgomery County. Its published point location is 41.0395, -95.3782.

What county is 51533 in?

51533 spans 2 counties: Montgomery County and Mills County. Most of it falls in Montgomery 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 51533?

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

What time zone is 51533 in?

51533 uses America/Chicago.

How many people live in 51533?

About 844 people live in ZIP code 51533, in 359 households, at 10.6 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 51533?

$68,750 a year, against $75,059 across Iowa.

What ZIP codes are near 51533?

The closest are 51540 (6.3 mi), 51541 (7.2 mi), 51566 (7.9 mi), 51549 (11.1 mi) and 51645 (11.1 mi).

Is 51533 a PO Box ZIP code?

51533 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “51533 ZIP Code — Emerson, Iowa (Montgomery County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51533

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