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Where 50645 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 50645 into a pocket calculator and turn it upside down: ShgOS — not quite a word, sorry.
- ➕ As a number, 50,645 = 5 × 7 × 1447. Its digits add up to 20, a total 2,586 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100010111010101 - 🏠 Its numerical neighbours: 50644 (Independence, IA, 47 mi away) and 50647 (Janesville, IA, 26 mi away).
- 🔄 Backwards, 50645 becomes 54605, which is not a ZIP code at all.
- 👥 33 other ZIP codes are made of exactly the same digits (04556, 04565, 04655, 05456, 05465, 05654, …). The farthest-flung twin is 04655 in Machiasport, ME, 1,249 miles away.
- 🧭 Farther north than 83% of all ZIP codes, and farther west than 62%.
- 🎯387 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 50645 and you would come out at 43.02°S, 87.56°E — 935 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 22m of daylight. Shortest: 9h 00m.
- 📏 At 85.6 square miles of land, 50645 is bigger than 74% of ZIP codes — room for about 65 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 1,193This ZIP1,193 |
|---|---|
| Households | 571This ZIP571 |
| Housing units | 622This ZIP622 |
| Median age | 53.8This ZIP53.8Iowa38.6US 38.9 |
| Median household income | $64,408This ZIP$64,408Iowa$75,059US $80,734 |
| Median home value | $114,600This ZIP$114,600Iowa$208,000US $332,700 |
| Median gross rent | $924This ZIP$924Iowa$972US $1,413 |
| Bachelor's degree or higher | 15.6%This ZIP15.6% |
| Mean commute | 20.7 minThis ZIP20.7 min |
| Population density | 13.9 / sq miThis ZIP13.9 / sq mi |
Business and tax activity
| Business establishments | 21This ZIP21 |
|---|---|
| Employees | 69This ZIP69 |
| Annual payroll | $4,511,000This ZIP$4,511,000 |
| Tax returns filed | 530This ZIP530 |
| Total adjusted gross income | $42,473,000This ZIP$42,473,000 |
Land area
| Land area | 85.63 sq miThis ZIP85.63 sq mi |
|---|---|
| Water area | 0.21 sq miThis ZIP0.21 sq mi |
Counties 50645 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Chickasaw County | 90.2% |
| Bremer County | 6.8% |
| Floyd County | 2.9% |
Other place names in 50645
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 50645
| ZIP | City | Distance |
|---|---|---|
50658 | Nashua, IA | 6.8 mi |
50661 | North Washington, IA | 6.9 mi |
50659 | New Hampton, IA | 7.8 mi |
50631 | Frederika, IA | 11.5 mi |
50616 | Charles City, IA | 11.6 mi |
50603 | Alta Vista, IA | 11.7 mi |
50666 | Plainfield, IA | 11.8 mi |
50620 | Colwell, IA | 12.1 mi |
50630 | Fredericksburg, IA | 12.4 mi |
52154 | Lawler, IA | 15.6 mi |
Find every ZIP code within 10 miles of 50645 →
Questions about this ZIP code
Where is ZIP code 50645?
50645 is in Ionia, Iowa, in Chickasaw County. Its published point location is 43.0196, -92.4437.
What county is 50645 in?
50645 spans 3 counties: Chickasaw County, Bremer County and Floyd County. Most of it falls in Chickasaw 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 50645?
Ionia uses area code 641, from NANPA's telephone records.
What time zone is 50645 in?
50645 uses America/Chicago.
How many people live in 50645?
About 1,193 people live in ZIP code 50645, in 571 households, at 13.9 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 50645?
$64,408 a year, against $75,059 across Iowa.
What ZIP codes are near 50645?
The closest are 50658 (6.8 mi), 50661 (6.9 mi), 50659 (7.8 mi), 50631 (11.5 mi) and 50616 (11.6 mi).
Is 50645 a PO Box ZIP code?
50645 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “50645 ZIP Code — Ionia, Iowa (Chickasaw County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/50645
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/50645.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.