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zipcodes.pro — ZIP/51105

51105

ZIP 51105 is in Sioux City, Iowa, in Woodbury County; area code 712; Central time. Sioux City has 9 ZIP codes in all.

Type
Standard
Time zone
America/Chicago
County
Woodbury
Population
10,415
Coordinates
42.5079, -96.3663
☼ Live from 51105 — Sioux City, IA

Weather right now

Asking the National Weather Service…

NEXRAD radar
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Local time: —

Where 51105 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 51105
  • 🔢 Type 51105 into a pocket calculator and turn it upside down: SOIIS — not quite a word, sorry.
  • ➕ As a number, 51,105 = 3 × 5 × 3407. Its digits add up to 12, a total 940 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100011110100001
  • 🏠 Its numerical neighbours: 51104 (Sioux City, IA, 3 mi away) and 51106 (Sioux City, IA, 4 mi away).
  • 🔄 Backwards, 51105 becomes 50115 — and that is a real ZIP code: Guthrie Center, IA, 109 miles away.
  • 👥 20 other ZIP codes are made of exactly the same digits (01515, 05151, 10155, 10551, 11055, 11550, …). The farthest-flung twin is 01515 in East Brookfield, MA, 1,238 miles away.
  • 🧭 Farther north than 79% of all ZIP codes, and farther west than 72%.
  • 🎯218 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 51105 and you would come out at 42.51°S, 83.63°E — 797 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 18m of daylight. Shortest: 9h 03m.
  • 📏 At 6.0 square miles of land, 51105 is bigger than 21% of ZIP codes — room for about 4.5 Central Parks.
🌙 The sky over 51105 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population10,415This ZIP10,415
Households3,596This ZIP3,596
Housing units4,053This ZIP4,053
Median age29.6This ZIP29.6Iowa38.6US 38.9
Median household income$51,786This ZIP$51,786Iowa$75,059US $80,734
Median home value$96,200This ZIP$96,200Iowa$208,000US $332,700
Median gross rent$859This ZIP$859Iowa$972US $1,413
Bachelor's degree or higher7.8%This ZIP7.8%
Mean commute16.9 minThis ZIP16.9 min
Population density1,749.8 / sq miThis ZIP1,749.8 / sq mi

Business and tax activity

Business establishments218This ZIP218
Employees3,286This ZIP3,286
Annual payroll$166,710,000This ZIP$166,710,000
Tax returns filed4,000This ZIP4,000
Total adjusted gross income$166,744,000This ZIP$166,744,000

Land area

Land area5.95 sq miThis ZIP5.95 sq mi
Water area0.03 sq miThis ZIP0.03 sq mi

Other place names in 51105

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

ZIP codes near 51105

ZIPCityDistance
51101 Sioux City, IA 1.7 mi
51104 Sioux City, IA 2.6 mi
51108 Sioux City, IA 4.1 mi
51106 Sioux City, IA 4.1 mi
51103 Sioux City, IA 4.3 mi
68776 South Sioux City, NE 5.2 mi
51111 Sioux City, IA 6.3 mi
57049 North Sioux City, SD 7.4 mi
51109 Sioux City, IA 8.8 mi
51054 Sergeant Bluff, IA 8.9 mi

Find every ZIP code within 10 miles of 51105 →

Questions about this ZIP code

Where is ZIP code 51105?

51105 is in Sioux City, Iowa, in Woodbury County, part of the Sioux City, IA-NE-SD metropolitan area. Its published point location is 42.5079, -96.3663.

What county is 51105 in?

51105 lies in Woodbury County.

What area code is 51105?

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

What time zone is 51105 in?

51105 uses America/Chicago.

How many people live in 51105?

About 10,415 people live in ZIP code 51105, in 3,596 households, at 1,749.8 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 51105?

$51,786 a year, against $75,059 across Iowa.

What ZIP codes are near 51105?

The closest are 51101 (1.7 mi), 51104 (2.6 mi), 51108 (4.1 mi), 51106 (4.1 mi) and 51103 (4.3 mi).

Is 51105 a PO Box ZIP code?

51105 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “51105 ZIP Code — Sioux City, Iowa (Woodbury County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51105

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