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Where 51442 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 51442 into a pocket calculator and turn it upside down: ZhhIS — not quite a word, sorry.
- ➕ As a number, 51,442 = 2 × 17 × 17 × 89. Its digits add up to 16, a total 1,922 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100100011110010 - 🏠 Its numerical neighbours: 51441 (Deloit, IA, 6 mi away) and 51443 (Glidden, IA, 34 mi away).
- 🔄 Backwards, 51442 becomes 24415 — and that is a real ZIP code: Brownsburg, VA, 895 miles away.
- 👥 35 other ZIP codes are made of exactly the same digits (12454, 12544, 14425, 14452, 14542, 15244, …). The farthest-flung twin is 12544 in Mellenville, NY, 1,108 miles away.
- 🧭 Farther north than 75% of all ZIP codes, and farther west than 69%.
- 🎯227 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 51442 and you would come out at 42.03°S, 84.64°E — 858 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 15m of daylight. Shortest: 9h 07m.
- 📏 At 159.6 square miles of land, 51442 is bigger than 87% of ZIP codes — room for about 121 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 9,692This ZIP9,692 |
|---|---|
| Households | 3,587This ZIP3,587 |
| Housing units | 3,825This ZIP3,825 |
| Median age | 36.1This ZIP36.1Iowa38.6US 38.9 |
| Median household income | $66,767This ZIP$66,767Iowa$75,059US $80,734 |
| Median home value | $159,400This ZIP$159,400Iowa$208,000US $332,700 |
| Median gross rent | $755This ZIP$755Iowa$972US $1,413 |
| Bachelor's degree or higher | 17.3%This ZIP17.3% |
| Mean commute | 14.2 minThis ZIP14.2 min |
| Population density | 60.7 / sq miThis ZIP60.7 / sq mi |
Business and tax activity
| Business establishments | 257This ZIP257 |
|---|---|
| Employees | 4,264This ZIP4,264 |
| Annual payroll | $221,922,000This ZIP$221,922,000 |
| Tax returns filed | 4,320This ZIP4,320 |
| Total adjusted gross income | $292,809,000This ZIP$292,809,000 |
Land area
| Land area | 159.57 sq miThis ZIP159.57 sq mi |
|---|---|
| Water area | 0.13 sq miThis ZIP0.13 sq mi |
Other place names in 51442
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 51442
| ZIP | City | Distance |
|---|---|---|
51441 | Deloit, IA | 6.0 mi |
51520 | Arion, IA | 6.8 mi |
51465 | Vail, IA | 8.9 mi |
51528 | Dow City, IA | 11.3 mi |
51461 | Schleswig, IA | 11.6 mi |
51448 | Kiron, IA | 12.3 mi |
51439 | Charter Oak, IA | 12.4 mi |
51460 | Ricketts, IA | 13.0 mi |
51467 | Westside, IA | 13.1 mi |
51454 | Manilla, IA | 13.2 mi |
Find every ZIP code within 10 miles of 51442 →
Questions about this ZIP code
Where is ZIP code 51442?
51442 is in Denison, Iowa, in Crawford County. Its published point location is 42.0315, -95.3565.
What county is 51442 in?
51442 lies in Crawford County.
What area code is 51442?
Denison uses area code 712, from NANPA's telephone records.
What time zone is 51442 in?
51442 uses America/Chicago.
How many people live in 51442?
About 9,692 people live in ZIP code 51442, in 3,587 households, at 60.7 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 51442?
$66,767 a year, against $75,059 across Iowa.
What ZIP codes are near 51442?
The closest are 51441 (6 mi), 51520 (6.8 mi), 51465 (8.9 mi), 51528 (11.3 mi) and 51461 (11.6 mi).
Is 51442 a PO Box ZIP code?
51442 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “51442 ZIP Code — Denison, Iowa (Crawford County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51442
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/51442.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.