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Where 52556 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 52556 into a pocket calculator and turn it upside down: gSSZS — not quite a word, sorry.
- ➕ As a number, 52,556 = 2 × 2 × 7 × 1877. Its digits add up to 23, a total 2,533 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100110101001100 - 🏠 Its numerical neighbours: 52555 (Exline, IA, 53 mi away) and 52557 (Fairfield, IA, 2 mi away).
- 🔄 Backwards, 52556 becomes 65525, which is not a ZIP code at all.
- 👥 10 other ZIP codes are made of exactly the same digits (25565, 26555, 52565, 52655, 56255, 56525, …). The farthest-flung twin is 26555 in Fairmont, WV, 626 miles away.
- 🧭 Farther north than 67% of all ZIP codes, and farther west than 61%.
- 🎯359 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 52556 and you would come out at 41.02°S, 88.07°E — 1,038 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 08m of daylight. Shortest: 9h 13m.
- 📏 At 175.5 square miles of land, 52556 is bigger than 89% of ZIP codes — room for about 133 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 11,448This ZIP11,448 |
|---|---|
| Households | 5,377This ZIP5,377 |
| Housing units | 6,044This ZIP6,044 |
| Median age | 45.2This ZIP45.2Iowa38.6US 38.9 |
| Median household income | $59,243This ZIP$59,243Iowa$75,059US $80,734 |
| Median home value | $166,800This ZIP$166,800Iowa$208,000US $332,700 |
| Median gross rent | $878This ZIP$878Iowa$972US $1,413 |
| Bachelor's degree or higher | 48.0%This ZIP48.0% |
| Mean commute | 13.6 minThis ZIP13.6 min |
| Population density | 65.2 / sq miThis ZIP65.2 / sq mi |
Business and tax activity
| Business establishments | 552This ZIP552 |
|---|---|
| Employees | 5,563This ZIP5,563 |
| Annual payroll | $298,087,000This ZIP$298,087,000 |
| Tax returns filed | 5,290This ZIP5,290 |
| Total adjusted gross income | $396,059,000This ZIP$396,059,000 |
Land area
| Land area | 175.54 sq miThis ZIP175.54 sq mi |
|---|---|
| Water area | 0.48 sq miThis ZIP0.48 sq mi |
Other place names in 52556
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 52556
| ZIP | City | Distance |
|---|---|---|
52557 | Fairfield, IA | 2.0 mi |
52635 | Lockridge, IA | 9.0 mi |
52567 | Libertyville, IA | 9.9 mi |
52580 | Packwood, IA | 10.2 mi |
52540 | Brighton, IA | 10.7 mi |
52535 | Birmingham, IA | 11.3 mi |
52533 | Batavia, IA | 11.5 mi |
52585 | Richland, IA | 11.8 mi |
52651 | Stockport, IA | 12.6 mi |
52642 | Rome, IA | 12.7 mi |
Find every ZIP code within 10 miles of 52556 →
Questions about this ZIP code
Where is ZIP code 52556?
52556 is in Fairfield, Iowa, in Jefferson County. Its published point location is 41.0242, -91.9275.
What county is 52556 in?
52556 lies in Jefferson County.
What area code is 52556?
Fairfield uses area code 641, from NANPA's telephone records.
What time zone is 52556 in?
52556 uses America/Chicago.
How many people live in 52556?
About 11,448 people live in ZIP code 52556, in 5,377 households, at 65.2 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 52556?
$59,243 a year, against $75,059 across Iowa.
What ZIP codes are near 52556?
The closest are 52557 (2 mi), 52635 (9 mi), 52567 (9.9 mi), 52580 (10.2 mi) and 52540 (10.7 mi).
Is 52556 a PO Box ZIP code?
52556 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “52556 ZIP Code — Fairfield, Iowa (Jefferson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/52556
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/52556.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.