51637
ZIP 51637 is College Springs, Iowa, in Page County; area code 712; Central time.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Page
- Metro area
- none
- Population
- 171
- Coordinates
- 40.6204, -95.1183
Weather right now
Asking the National Weather Service…
Where 51637 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 51637 into a pocket calculator and turn it upside down: LEgIS — not quite a word, sorry.
- ➕ 51637 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 22, a total 2,607 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100100110110101 - 🏠 Its numerical neighbours: 51636 (Coin, IA, 7 mi away) and 51638 (Essex, IA, 17 mi away).
- 🔄 Backwards, 51637 becomes 73615, which is not a ZIP code at all.
- 👥 62 other ZIP codes are made of exactly the same digits (13657, 13675, 13756, 15367, 15376, 15637, …). The farthest-flung twin is 13756 in East Branch, NY, 1,041 miles away.
- 🧭 Farther north than 62% of all ZIP codes, and farther west than 69%.
- 🎯191 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 51637 and you would come out at 40.62°S, 84.88°E — 934 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 05m of daylight. Shortest: 9h 16m.
- 📏 At 1.3 square miles of land, 51637 is bigger than 9% of ZIP codes — about 606 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 171This ZIP171 |
|---|---|
| Households | 81This ZIP81 |
| Housing units | 85This ZIP85 |
| Median age | 47.2This ZIP47.2Iowa38.6US 38.9 |
| Median household income | $72,888This ZIP$72,888Iowa$75,059US $80,734 |
| Median home value | $76,300This ZIP$76,300Iowa$208,000US $332,700 |
| Bachelor's degree or higher | 20.1%This ZIP20.1% |
| Mean commute | 34.6 minThis ZIP34.6 min |
| Population density | 136.6 / sq miThis ZIP136.6 / sq mi |
Land area
| Land area | 1.25 sq miThis ZIP1.25 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 51637
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 51637
| ZIP | City | Distance |
|---|---|---|
51630 | Blanchard, IA | 4.2 mi |
51651 | Shambaugh, IA | 5.0 mi |
64445 | Elmo, MO | 5.8 mi |
51631 | Braddyville, IA | 6.0 mi |
51636 | Coin, IA | 6.9 mi |
51656 | Yorktown, IA | 8.2 mi |
64431 | Clearmont, MO | 9.0 mi |
51632 | Clarinda, IA | 9.4 mi |
64498 | Westboro, MO | 11.6 mi |
51647 | Northboro, IA | 11.9 mi |
Find every ZIP code within 10 miles of 51637 →
Questions about this ZIP code
Where is ZIP code 51637?
51637 is in College Springs, Iowa, in Page County. Its published point location is 40.6204, -95.1183.
What county is 51637 in?
51637 lies in Page County.
What area code is 51637?
College Springs uses area code 712, from NANPA's telephone records.
What time zone is 51637 in?
51637 uses America/Chicago.
How many people live in 51637?
About 171 people live in ZIP code 51637, in 81 households, at 136.6 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 51637?
$72,888 a year, against $75,059 across Iowa.
What ZIP codes are near 51637?
The closest are 51630 (4.2 mi), 51651 (5 mi), 64445 (5.8 mi), 51631 (6 mi) and 51636 (6.9 mi).
Is 51637 a PO Box ZIP code?
51637 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “51637 ZIP Code — College Springs, Iowa (Page County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/51637
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/51637.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.