52568
ZIP 52568 is Martinsburg, Iowa, in Keokuk County; area code 641; Central time.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Keokuk
- Metro area
- none
- Population
- 80
- Coordinates
- 41.1779, -92.2508
Weather right now
Asking the National Weather Service…
Where 52568 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 52568 into a pocket calculator and turn it upside down: BgSZS — not quite a word, sorry.
- ➕ As a number, 52,568 = 2 × 2 × 2 × 6571. Its digits add up to 26, a total 2,038 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100110101011000 - 🏠 Its numerical neighbours: 52567 (Libertyville, IA, 19 mi away) and 52569 (Melrose, IA, 44 mi away).
- 🔄 Backwards, 52568 becomes 86525, which is not a ZIP code at all.
- 👥 24 other ZIP codes are made of exactly the same digits (25685, 25865, 26585, 26855, 28556, 28655, …). The farthest-flung twin is 85652 in Cortaro, AZ, 1,202 miles away.
- 🧭 Farther north than 68% of all ZIP codes, and farther west than 62%.
- 🎯345 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 52568 and you would come out at 41.18°S, 87.75°E — 1,019 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 09m of daylight. Shortest: 9h 12m.
- 📏 At 0.262 square miles of land, 52568 is bigger than 3% of ZIP codes — about 127 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 80This ZIP80 |
|---|---|
| Households | 33This ZIP33 |
| Housing units | 34This ZIP34 |
| Median age | 52.5This ZIP52.5Iowa38.6US 38.9 |
| Median household income | $44,375This ZIP$44,375Iowa$75,059US $80,734 |
| Median home value | $66,300This ZIP$66,300Iowa$208,000US $332,700 |
| Bachelor's degree or higher | 3.1%This ZIP3.1% |
| Mean commute | 33.3 minThis ZIP33.3 min |
| Population density | 305.3 / sq miThis ZIP305.3 / sq mi |
Land area
| Land area | 0.26 sq miThis ZIP0.26 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 52568
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 52568
| ZIP | City | Distance |
|---|---|---|
52563 | Hedrick, IA | 1.7 mi |
52562 | Hayesville, IA | 6.0 mi |
52576 | Ollie, IA | 7.8 mi |
52580 | Packwood, IA | 9.7 mi |
52591 | Sigourney, IA | 10.1 mi |
52561 | Fremont, IA | 10.9 mi |
52550 | Delta, IA | 10.9 mi |
52533 | Batavia, IA | 12.9 mi |
52501 | Ottumwa, IA | 13.1 mi |
52530 | Agency, IA | 13.3 mi |
Find every ZIP code within 10 miles of 52568 →
Questions about this ZIP code
Where is ZIP code 52568?
52568 is in Martinsburg, Iowa, in Keokuk County. Its published point location is 41.1779, -92.2508.
What county is 52568 in?
52568 lies in Keokuk County.
What area code is 52568?
Martinsburg uses area code 641, from NANPA's telephone records.
What time zone is 52568 in?
52568 uses America/Chicago.
How many people live in 52568?
About 80 people live in ZIP code 52568, in 33 households, at 305.3 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 52568?
$44,375 a year, against $75,059 across Iowa.
What ZIP codes are near 52568?
The closest are 52563 (1.7 mi), 52562 (6 mi), 52576 (7.8 mi), 52580 (9.7 mi) and 52591 (10.1 mi).
Is 52568 a PO Box ZIP code?
52568 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “52568 ZIP Code — Martinsburg, Iowa (Keokuk County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/52568
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/52568.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.