61831
ZIP 61831 is Collison, Illinois, in Vermilion County; area codes 217 and 447; Central time.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Vermilion
- Metro area
- Danville, IL
- Population
- 160
- Coordinates
- 40.2262, -87.7970
Weather right now
Asking the National Weather Service…
Where 61831 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 61831 into a pocket calculator and turn it upside down: IEBIg — not quite a word, sorry.
- ➕ As a number, 61,831 = 7 × 11 × 11 × 73. Its digits add up to 19, a total 2,454 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1111000110000111 - 🏠 Its numerical neighbours: 61830 (Cisco, IL, 52 mi away) and 61832 (Danville, IL, 11 mi away).
- 🔄 Backwards, 61831 becomes 13816, which is not a ZIP code at all.
- 👥 20 other ZIP codes are made of exactly the same digits (11368, 11386, 13618, 13681, 13861, 18631, …). The farthest-flung twin is 83611 in Cascade, ID, 1,419 miles away.
- 🧭 Farther north than 58% of all ZIP codes, and farther west than 50%.
- 🎯571 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 61831 and you would come out at 40.23°S, 92.20°E — 1,242 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 02m of daylight. Shortest: 9h 18m.
- 📏 At 12.1 square miles of land, 61831 is bigger than 30% of ZIP codes — room for about 9.2 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 160This ZIP160 |
|---|---|
| Households | 88This ZIP88 |
| Housing units | 108This ZIP108 |
| Median age | 60.7This ZIP60.7Illinois39.0US 38.9 |
| Median household income | $103,750This ZIP$103,750Illinois$83,390US $80,734 |
| Median home value | $180,000This ZIP$180,000Illinois$263,300US $332,700 |
| Bachelor's degree or higher | 12.9%This ZIP12.9% |
| Mean commute | 25.3 minThis ZIP25.3 min |
| Population density | 13.2 / sq miThis ZIP13.2 / sq mi |
Land area
| Land area | 12.11 sq miThis ZIP12.11 sq mi |
|---|---|
| Water area | 0.00 sq mi |
ZIP codes near 61831
| ZIP | City | Distance |
|---|---|---|
61865 | Potomac, IL | 5.3 mi |
61858 | Oakwood, IL | 6.6 mi |
61844 | Fithian, IL | 6.9 mi |
61812 | Armstrong, IL | 6.9 mi |
61848 | Henning, IL | 7.5 mi |
61857 | Muncie, IL | 7.8 mi |
61834 | Danville, IL | 8.3 mi |
61871 | Royal, IL | 9.9 mi |
61862 | Penfield, IL | 10.1 mi |
61859 | Ogden, IL | 10.2 mi |
Find every ZIP code within 10 miles of 61831 →
Questions about this ZIP code
Where is ZIP code 61831?
61831 is in Collison, Illinois, in Vermilion County, part of the Danville, IL micropolitan area. Its published point location is 40.2262, -87.7970.
What county is 61831 in?
61831 lies in Vermilion County.
What area code is 61831?
Collison uses area codes 217 and 447, from NANPA's telephone records.
What time zone is 61831 in?
61831 uses America/Chicago.
How many people live in 61831?
About 160 people live in ZIP code 61831, in 88 households, at 13.2 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 61831?
$103,750 a year, against $83,390 across Illinois.
What ZIP codes are near 61831?
The closest are 61865 (5.3 mi), 61858 (6.6 mi), 61844 (6.9 mi), 61812 (6.9 mi) and 61848 (7.5 mi).
Is 61831 a PO Box ZIP code?
61831 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “61831 ZIP Code — Collison, Illinois (Vermilion County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/61831
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/61831.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.