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zipcodes.pro — ZIP/51301

51301

ZIP 51301 is Spencer, Iowa, in Clay County; area code 712; Central time.

Type
Standard
Time zone
America/Chicago
County
Clay
Metro area
Spencer, IA
Population
12,638
Coordinates
43.1531, -95.1498
☼ Live from 51301 — Spencer, IA

Weather right now

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Local time: —

Where 51301 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 51301
  • 🔢 Type 51301 into a pocket calculator and turn it upside down: IOEIS — not quite a word, sorry.
  • ➕ As a number, 51,301 = 29 × 29 × 61. Its digits add up to 10, a total 513 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100100001100101
  • 🏠 Its numerical neighbours: 51250 (Sioux Center, IA, 53 mi away) and 51331 (Arnolds Park, IA, 14 mi away).
  • 🔄 Backwards, 51301 becomes 10315, which is not a ZIP code at all.
  • 👥 26 other ZIP codes are made of exactly the same digits (01351, 01531, 10153, 11053, 11530, 13051, …). The farthest-flung twin is 01531 in New Braintree, MA, 1,166 miles away.
  • 🧭 Farther north than 84% of all ZIP codes, and farther west than 69%.
  • 🎯290 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 51301 and you would come out at 43.15°S, 84.85°E — 818 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 23m of daylight. Shortest: 8h 59m.
  • 📏 At 157.7 square miles of land, 51301 is bigger than 87% of ZIP codes — room for about 120 Central Parks.
🌙 The sky over 51301 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population12,638This ZIP12,638
Households5,680This ZIP5,680
Housing units6,185This ZIP6,185
Median age41.8This ZIP41.8Iowa38.6US 38.9
Median household income$63,402This ZIP$63,402Iowa$75,059US $80,734
Median home value$188,300This ZIP$188,300Iowa$208,000US $332,700
Median gross rent$807This ZIP$807Iowa$972US $1,413
Bachelor's degree or higher29.0%This ZIP29.0%
Mean commute16.2 minThis ZIP16.2 min
Population density80.2 / sq miThis ZIP80.2 / sq mi

Business and tax activity

Business establishments483This ZIP483
Employees6,534This ZIP6,534
Annual payroll$304,818,000This ZIP$304,818,000
Tax returns filed5,960This ZIP5,960
Total adjusted gross income$474,444,000This ZIP$474,444,000

Land area

Land area157.66 sq miThis ZIP157.66 sq mi
Water area0.87 sq miThis ZIP0.87 sq mi

Other place names in 51301

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

ZIP codes near 51301

ZIPCityDistance
51340 Fostoria, IA 6.0 mi
51333 Dickens, IA 7.6 mi
51338 Everly, IA 9.2 mi
51357 Royal, IA 9.4 mi
51343 Greenville, IA 9.4 mi
51341 Gillett Grove, IA 10.9 mi
51351 Milford, IA 11.3 mi
51358 Ruthven, IA 13.0 mi
51364 Terril, IA 13.8 mi
51331 Arnolds Park, IA 14.3 mi

Find every ZIP code within 10 miles of 51301 →

Questions about this ZIP code

Where is ZIP code 51301?

51301 is in Spencer, Iowa, in Clay County, part of the Spencer, IA micropolitan area. Its published point location is 43.1531, -95.1498.

What county is 51301 in?

51301 lies in Clay County.

What area code is 51301?

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

What time zone is 51301 in?

51301 uses America/Chicago.

How many people live in 51301?

About 12,638 people live in ZIP code 51301, in 5,680 households, at 80.2 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 51301?

$63,402 a year, against $75,059 across Iowa.

What ZIP codes are near 51301?

The closest are 51340 (6 mi), 51333 (7.6 mi), 51338 (9.2 mi), 51357 (9.4 mi) and 51343 (9.4 mi).

Is 51301 a PO Box ZIP code?

51301 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “51301 ZIP Code — Spencer, Iowa (Clay County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51301

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