61426
ZIP 61426 is Castleton, Illinois, in Stark County; area code 309; Central time.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Stark
- Metro area
- Peoria, IL
- Population
- 41
- Coordinates
- 41.1196, -89.7060
Weather right now
Asking the National Weather Service…
Where 61426 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 61426 into a pocket calculator and turn it upside down: gZhIg — not quite a word, sorry.
- ➕ As a number, 61,426 = 2 × 30713. Its digits add up to 19, a total 2,454 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1110111111110010 - 🏠 Its numerical neighbours: 61425 (Carman, IL, 74 mi away) and 61427 (Cuba, IL, 50 mi away).
- 🔄 Backwards, 61426 becomes 62416, which is not a ZIP code at all.
- 👥 20 other ZIP codes are made of exactly the same digits (12466, 14626, 16246, 16426, 16624, 21664, …). The farthest-flung twin is 12466 in Port Ewen, NY, 814 miles away.
- 🧭 Farther north than 68% of all ZIP codes, and farther west than 55%.
- 🎯475 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 61426 and you would come out at 41.12°S, 90.29°E — 1,125 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 12m.
- 📏 At 3.1 square miles of land, 61426 is bigger than 14% of ZIP codes — room for about 2.3 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 41This ZIP41 |
|---|---|
| Households | 18This ZIP18 |
| Housing units | 18This ZIP18 |
| Median age | 29.8This ZIP29.8Illinois39.0US 38.9 |
| Bachelor's degree or higher | 51.6%This ZIP51.6% |
| Population density | 13.4 / sq miThis ZIP13.4 / sq mi |
Land area
| Land area | 3.06 sq miThis ZIP3.06 sq mi |
|---|---|
| Water area | 0.00 sq mi |
ZIP codes near 61426
| ZIP | City | Distance |
|---|---|---|
61491 | Wyoming, IL | 4.6 mi |
61424 | Camp Grove, IL | 4.7 mi |
61421 | Bradford, IL | 5.6 mi |
61479 | Speer, IL | 8.8 mi |
61483 | Toulon, IL | 9.1 mi |
61345 | Neponset, IL | 11.6 mi |
61565 | Sparland, IL | 11.9 mi |
61537 | Henry, IL | 12.2 mi |
61314 | Buda, IL | 12.6 mi |
61368 | Tiskilwa, IL | 13.9 mi |
Find every ZIP code within 10 miles of 61426 →
Questions about this ZIP code
Where is ZIP code 61426?
61426 is in Castleton, Illinois, in Stark County, part of the Peoria, IL metropolitan area. Its published point location is 41.1196, -89.7060.
What county is 61426 in?
61426 lies in Stark County.
What area code is 61426?
Castleton uses area code 309, from NANPA's telephone records.
What time zone is 61426 in?
61426 uses America/Chicago.
How many people live in 61426?
About 41 people live in ZIP code 61426, in 18 households, at 13.4 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 61426?
The closest are 61491 (4.6 mi), 61424 (4.7 mi), 61421 (5.6 mi), 61479 (8.8 mi) and 61483 (9.1 mi).
Is 61426 a PO Box ZIP code?
61426 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “61426 ZIP Code — Castleton, Illinois (Stark County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/61426
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/61426.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.