52640
ZIP 52640 is Morning Sun, Iowa, mostly in Louisa County; area code 319; Central time.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Louisa +1 more
- Metro area
- none
- Population
- 1,274
- Coordinates
- 41.1012, -91.2805
Weather right now
Asking the National Weather Service…
Where 52640 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 52640 into a pocket calculator and turn it upside down: OhgZS — not quite a word, sorry.
- ➕ As a number, 52,640 = 2 × 2 × 2 × 2 × 2 × 5 × 7 × 47. Its digits add up to 17, a total 2,133 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100110110100000 - 🏠 Its numerical neighbours: 52639 (Montrose, IA, 41 mi away) and 52641 (Mount Pleasant, IA, 18 mi away).
- 🔄 Backwards, 52640 becomes 04625 — and that is a real ZIP code: Cranberry Isles, ME, 1,188 miles away.
- 👥 59 other ZIP codes are made of exactly the same digits (02456, 02465, 02564, 02645, 04256, 04265, …). The farthest-flung twin is 04652 in Lubec, ME, 1,246 miles away.
- 🧭 Farther north than 68% of all ZIP codes, and farther west than 59%.
- 🎯394 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 52640 and you would come out at 41.10°S, 88.72°E — 1,061 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 68.3 square miles of land, 52640 is bigger than 68% of ZIP codes — room for about 52 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 1,274This ZIP1,274 |
|---|---|
| Households | 512This ZIP512 |
| Housing units | 579This ZIP579 |
| Median age | 46.7This ZIP46.7Iowa38.6US 38.9 |
| Median household income | $67,813This ZIP$67,813Iowa$75,059US $80,734 |
| Median home value | $125,800This ZIP$125,800Iowa$208,000US $332,700 |
| Median gross rent | $806This ZIP$806Iowa$972US $1,413 |
| Bachelor's degree or higher | 11.3%This ZIP11.3% |
| Mean commute | 24.9 minThis ZIP24.9 min |
| Population density | 18.6 / sq miThis ZIP18.6 / sq mi |
Business and tax activity
| Business establishments | 34This ZIP34 |
|---|---|
| Employees | 178This ZIP178 |
| Annual payroll | $7,885,000This ZIP$7,885,000 |
| Tax returns filed | 590This ZIP590 |
| Total adjusted gross income | $41,686,000This ZIP$41,686,000 |
Land area
| Land area | 68.34 sq miThis ZIP68.34 sq mi |
|---|---|
| Water area | 0.02 sq miThis ZIP0.02 sq mi |
Counties 52640 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Louisa County | 66.6% |
| Des Moines County | 33.4% |
Other place names in 52640
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 52640
| ZIP | City | Distance |
|---|---|---|
52660 | Yarmouth, IA | 7.4 mi |
52653 | Wapello, IA | 7.8 mi |
52644 | Mount Union, IA | 8.2 mi |
52659 | Winfield, IA | 8.4 mi |
52637 | Mediapolis, IA | 9.1 mi |
52737 | Columbus City, IA | 12.0 mi |
52650 | Sperry, IA | 12.3 mi |
52752 | Grandview, IA | 12.9 mi |
52738 | Columbus Junction, IA | 12.9 mi |
52646 | Oakville, IA | 13.9 mi |
Find every ZIP code within 10 miles of 52640 →
Questions about this ZIP code
Where is ZIP code 52640?
52640 is in Morning Sun, Iowa, in Louisa County. Its published point location is 41.1012, -91.2805.
What county is 52640 in?
52640 spans 2 counties: Louisa County and Des Moines County. Most of it falls in Louisa County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.
What area code is 52640?
Morning Sun uses area code 319, from NANPA's telephone records.
What time zone is 52640 in?
52640 uses America/Chicago.
How many people live in 52640?
About 1,274 people live in ZIP code 52640, in 512 households, at 18.6 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 52640?
$67,813 a year, against $75,059 across Iowa.
What ZIP codes are near 52640?
The closest are 52660 (7.4 mi), 52653 (7.8 mi), 52644 (8.2 mi), 52659 (8.4 mi) and 52637 (9.1 mi).
Is 52640 a PO Box ZIP code?
52640 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “52640 ZIP Code — Morning Sun, Iowa (Louisa County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/52640
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/52640.json Underlying data is public domain or openly licensed — sources, vintages and licences.