51015
ZIP 51015 is Climbing Hill, Iowa, in Woodbury County; area code 712; Central time.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Woodbury
- Metro area
- Sioux City, IA-NE-SD
- Population
- 45
- Coordinates
- 42.3394, -96.0811
Weather right now
Asking the National Weather Service…
Where 51015 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.
- 🔢 Type 51015 into a pocket calculator and turn it upside down: SIOIS — not quite a word, sorry.
- ⇆51015 reads the same backwards. It is one of only 412 palindromic ZIP codes.
- ➕ As a number, 51,015 = 3 × 5 × 19 × 179. Its digits add up to 12, a total 940 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100011101000111 - 🏠 Its numerical neighbours: 51014 (Cleghorn, IA, 36 mi away) and 51016 (Correctionville, IA, 17 mi 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, 1,225 miles away.
- 🧭 Farther north than 78% of all ZIP codes, and farther west than 72%.
- 🎯217 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 51015 and you would come out at 42.34°S, 83.92°E — 816 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 17m of daylight. Shortest: 9h 04m.
- 📏 At 1.3 square miles of land, 51015 is bigger than 9% of ZIP codes — about 620 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 45This ZIP45 |
|---|---|
| Households | 18This ZIP18 |
| Housing units | 23This ZIP23 |
| Median age | 53.8This ZIP53.8Iowa38.6US 38.9 |
| Median household income | $87,500This ZIP$87,500Iowa$75,059US $80,734 |
| Median home value | $137,500This ZIP$137,500Iowa$208,000US $332,700 |
| Bachelor's degree or higher | 46.7%This ZIP46.7% |
| Population density | 35.1 / sq miThis ZIP35.1 / sq mi |
Land area
| Land area | 1.28 sq miThis ZIP1.28 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 51015
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 51015
| ZIP | City | Distance |
|---|---|---|
51026 | Hornick, IA | 5.8 mi |
51007 | Bronson, IA | 7.0 mi |
51039 | Moville, IA | 7.8 mi |
51044 | Oto, IA | 8.6 mi |
51004 | Anthon, IA | 8.8 mi |
51056 | Smithland, IA | 9.3 mi |
51052 | Salix, IA | 9.7 mi |
51051 | Rodney, IA | 11.0 mi |
51030 | Lawton, IA | 12.2 mi |
51102 | Sioux City, IA | 12.3 mi |
Find every ZIP code within 10 miles of 51015 →
Questions about this ZIP code
Where is ZIP code 51015?
51015 is in Climbing Hill, Iowa, in Woodbury County, part of the Sioux City, IA-NE-SD metropolitan area. Its published point location is 42.3394, -96.0811.
What county is 51015 in?
51015 lies in Woodbury County.
What area code is 51015?
Climbing Hill uses area code 712, from NANPA's telephone records.
What time zone is 51015 in?
51015 uses America/Chicago.
How many people live in 51015?
About 45 people live in ZIP code 51015, in 18 households, at 35.1 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 51015?
$87,500 a year, against $75,059 across Iowa.
What ZIP codes are near 51015?
The closest are 51026 (5.8 mi), 51007 (7 mi), 51039 (7.8 mi), 51044 (8.6 mi) and 51004 (8.8 mi).
Is 51015 a PO Box ZIP code?
51015 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “51015 ZIP Code — Climbing Hill, Iowa (Woodbury County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51015
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/51015.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.