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zipcodes.pro — ZIP/51565

51565

ZIP 51565 is Portsmouth, Iowa, mostly in Shelby County; area code 712; Central time.

Type
Standard
Time zone
America/Chicago
County
Shelby +1 more
Metro area
none
Population
516
Coordinates
41.6429, -95.5245
☼ Live from 51565 — Portsmouth, IA

Weather right now

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Local time: —

Where 51565 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 51565
  • 🔢 Type 51565 into a pocket calculator and turn it upside down: SgSIS — not quite a word, sorry.
  • ➕ As a number, 51,565 = 5 × 10313. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100100101101101
  • 🏠 Its numerical neighbours: 51564 (Pisgah, IA, 24 mi away) and 51566 (Red Oak, IA, 46 mi away).
  • 🔄 Backwards, 51565 becomes 56515 — and that is a real ZIP code: Battle Lake, MN, 322 miles away.
  • 👥 9 other ZIP codes are made of exactly the same digits (15565, 15655, 51556, 55165, 55615, 56155, …). The farthest-flung twin is 15565 in West Salisbury, PA, 868 miles away.
  • 🧭 Farther north than 72% of all ZIP codes, and farther west than 70%.
  • 🎯203 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 51565 and you would come out at 41.64°S, 84.48°E — 870 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 45.7 square miles of land, 51565 is bigger than 57% of ZIP codes — room for about 35 Central Parks.
🌙 The sky over 51565 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population516This ZIP516
Households275This ZIP275
Housing units279This ZIP279
Median age54.6This ZIP54.6Iowa38.6US 38.9
Median household income$103,257This ZIP$103,257Iowa$75,059US $80,734
Median home value$182,100This ZIP$182,100Iowa$208,000US $332,700
Median gross rent$833This ZIP$833Iowa$972US $1,413
Bachelor's degree or higher18.5%This ZIP18.5%
Mean commute23.8 minThis ZIP23.8 min
Population density11.3 / sq miThis ZIP11.3 / sq mi

Business and tax activity

Business establishments13This ZIP13
Employees36This ZIP36
Annual payroll$2,136,000This ZIP$2,136,000
Tax returns filed220This ZIP220
Total adjusted gross income$21,043,000This ZIP$21,043,000

Land area

Land area45.66 sq miThis ZIP45.66 sq mi
Water area0.01 sq miThis ZIP0.01 sq mi

Counties 51565 spans

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

CountyShare of this ZIP
Shelby County 74.0%
Harrison County 26.0%

Other place names in 51565

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

ZIP codes near 51565

ZIPCityDistance
51562 Panama, IA 5.9 mi
51563 Persia, IA 5.9 mi
51570 Shelby, IA 8.5 mi
51578 Westphalia, IA 8.5 mi
51530 Earling, IA 11.1 mi
51537 Harlan, IA 11.7 mi
51546 Logan, IA 12.5 mi
51579 Woodbine, IA 13.0 mi
51593 Harlan, IA 13.0 mi
51521 Avoca, IA 14.3 mi

Find every ZIP code within 10 miles of 51565 →

Questions about this ZIP code

Where is ZIP code 51565?

51565 is in Portsmouth, Iowa, in Shelby County. Its published point location is 41.6429, -95.5245.

What county is 51565 in?

51565 spans 2 counties: Shelby County and Harrison County. Most of it falls in Shelby 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 51565?

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

What time zone is 51565 in?

51565 uses America/Chicago.

How many people live in 51565?

About 516 people live in ZIP code 51565, in 275 households, at 11.3 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 51565?

$103,257 a year, against $75,059 across Iowa.

What ZIP codes are near 51565?

The closest are 51562 (5.9 mi), 51563 (5.9 mi), 51570 (8.5 mi), 51578 (8.5 mi) and 51530 (11.1 mi).

Is 51565 a PO Box ZIP code?

51565 is a standard ZIP code. A normal ZIP code with street delivery.

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zipcodes.pro. “51565 ZIP Code — Portsmouth, Iowa (Shelby County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51565

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