52101
ZIP 52101 is Decorah, Iowa, mostly in Winneshiek County; area code 563; Central time.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Winneshiek +1 more
- Metro area
- none
- Population
- 12,706
- Coordinates
- 43.3663, -91.7729
Weather right now
Asking the National Weather Service…
Where 52101 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 52101 into a pocket calculator and turn it upside down: IOIZS — not quite a word, sorry.
- ➕ As a number, 52,101 = 3 × 3 × 7 × 827. Its digits add up to 9, a total 375 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100101110000101 - 🏠 Its numerical neighbours: 52099 (Dubuque, IA, 82 mi away) and 52132 (Calmar, IA, 13 mi away).
- 🔄 Backwards, 52101 becomes 10125 — and that is a real ZIP code: New York, NY, 928 miles away.
- 👥 37 other ZIP codes are made of exactly the same digits (01152, 01521, 02115, 02151, 10125, 10152, …). The farthest-flung twin is 02151 in Revere, MA, 1,051 miles away.
- 🧭 Farther north than 85% of all ZIP codes, and farther west than 60%.
- 🎯428 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 52101 and you would come out at 43.37°S, 88.23°E — 950 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 24m of daylight. Shortest: 8h 57m.
- 📏 At 316.7 square miles of land, 52101 is bigger than 95% of ZIP codes — room for about 240 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 12,706This ZIP12,706 |
|---|---|
| Households | 5,206This ZIP5,206 |
| Housing units | 5,790This ZIP5,790 |
| Median age | 44.0This ZIP44.0Iowa38.6US 38.9 |
| Median household income | $73,484This ZIP$73,484Iowa$75,059US $80,734 |
| Median home value | $273,200This ZIP$273,200Iowa$208,000US $332,700 |
| Median gross rent | $883This ZIP$883Iowa$972US $1,413 |
| Bachelor's degree or higher | 37.8%This ZIP37.8% |
| Mean commute | 16.2 minThis ZIP16.2 min |
| Population density | 40.1 / sq miThis ZIP40.1 / sq mi |
Business and tax activity
| Business establishments | 455This ZIP455 |
|---|---|
| Employees | 7,963This ZIP7,963 |
| Annual payroll | $357,448,000This ZIP$357,448,000 |
| Tax returns filed | 5,970This ZIP5,970 |
| Total adjusted gross income | $535,953,000This ZIP$535,953,000 |
Land area
| Land area | 316.69 sq miThis ZIP316.69 sq mi |
|---|---|
| Water area | 0.13 sq miThis ZIP0.13 sq mi |
Counties 52101 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Winneshiek County | 97.1% |
| Allamakee County | 2.9% |
Other place names in 52101
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 52101
| ZIP | City | Distance |
|---|---|---|
52149 | Highlandville, IA | 7.9 mi |
52165 | Ridgeway, IA | 11.8 mi |
52140 | Dorchester, IA | 13.2 mi |
55954 | Mabel, MN | 13.2 mi |
52132 | Calmar, IA | 13.3 mi |
52168 | Spillville, IA | 14.5 mi |
55922 | Canton, MN | 14.9 mi |
55974 | Spring Grove, MN | 15.9 mi |
52172 | Waukon, IA | 16.0 mi |
52161 | Ossian, IA | 16.5 mi |
Find every ZIP code within 10 miles of 52101 →
Questions about this ZIP code
Where is ZIP code 52101?
52101 is in Decorah, Iowa, in Winneshiek County. Its published point location is 43.3663, -91.7729.
What county is 52101 in?
52101 spans 2 counties: Winneshiek County and Allamakee County. Most of it falls in Winneshiek 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 52101?
Decorah uses area code 563, from NANPA's telephone records.
What time zone is 52101 in?
52101 uses America/Chicago.
How many people live in 52101?
About 12,706 people live in ZIP code 52101, in 5,206 households, at 40.1 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 52101?
$73,484 a year, against $75,059 across Iowa.
What ZIP codes are near 52101?
The closest are 52149 (7.9 mi), 52165 (11.8 mi), 52140 (13.2 mi), 55954 (13.2 mi) and 52132 (13.3 mi).
Is 52101 a PO Box ZIP code?
52101 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “52101 ZIP Code — Decorah, Iowa (Winneshiek County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/52101
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/52101.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.