61531
ZIP 61531 is Farmington, Illinois, mostly in Fulton County; area code 309; Central time.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Fulton +2 more
- Metro area
- Canton, IL
- Population
- 3,007
- Coordinates
- 40.6825, -90.0368
Weather right now
Asking the National Weather Service…
Where 61531 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 61531 into a pocket calculator and turn it upside down: IESIg — not quite a word, sorry.
- ➕ As a number, 61,531 = 37 × 1663. Its digits add up to 16, a total 1,922 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1111000001011011 - 🏠 Its numerical neighbours: 61530 (Eureka, IL, 40 mi away) and 61532 (Forest City, IL, 26 mi away).
- 🔄 Backwards, 61531 becomes 13516, which is not a ZIP code at all.
- 👥 30 other ZIP codes are made of exactly the same digits (11356, 11365, 11563, 13156, 13165, 13615, …). The farthest-flung twin is 11563 in Lynbrook, NY, 856 miles away.
- 🧭 Farther north than 63% of all ZIP codes, and farther west than 56%.
- 🎯454 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 61531 and you would come out at 40.68°S, 89.96°E — 1,130 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 15m.
- 📏 At 56.3 square miles of land, 61531 is bigger than 63% of ZIP codes — room for about 43 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 3,007This ZIP3,007 |
|---|---|
| Households | 1,221This ZIP1,221 |
| Housing units | 1,420This ZIP1,420 |
| Median age | 39.2This ZIP39.2Illinois39.0US 38.9 |
| Median household income | $70,107This ZIP$70,107Illinois$83,390US $80,734 |
| Median home value | $127,700This ZIP$127,700Illinois$263,300US $332,700 |
| Median gross rent | $931This ZIP$931Illinois$1,274US $1,413 |
| Bachelor's degree or higher | 32.4%This ZIP32.4% |
| Mean commute | 25.4 minThis ZIP25.4 min |
| Population density | 53.4 / sq miThis ZIP53.4 / sq mi |
Business and tax activity
| Business establishments | 48This ZIP48 |
|---|---|
| Employees | 690This ZIP690 |
| Annual payroll | $23,452,000This ZIP$23,452,000 |
| Tax returns filed | 1,510This ZIP1,510 |
| Total adjusted gross income | $99,970,000This ZIP$99,970,000 |
Land area
| Land area | 56.33 sq miThis ZIP56.33 sq mi |
|---|---|
| Water area | 0.52 sq miThis ZIP0.52 sq mi |
Counties 61531 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Fulton County | 62.9% |
| Knox County | 23.3% |
| Peoria County | 13.8% |
Other place names in 61531
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 61531
| ZIP | City | Distance |
|---|---|---|
61553 | Norris, IL | 4.3 mi |
61432 | Fairview, IL | 6.5 mi |
61569 | Trivoli, IL | 7.1 mi |
61572 | Yates City, IL | 7.9 mi |
61529 | Elmwood, IL | 8.6 mi |
61520 | Canton, IL | 9.6 mi |
61458 | Maquon, IL | 10.3 mi |
61544 | London Mills, IL | 10.4 mi |
61433 | Fiatt, IL | 11.2 mi |
61533 | Glasford, IL | 12.2 mi |
Find every ZIP code within 10 miles of 61531 →
Questions about this ZIP code
Where is ZIP code 61531?
61531 is in Farmington, Illinois, in Fulton County, part of the Canton, IL micropolitan area. Its published point location is 40.6825, -90.0368.
What county is 61531 in?
61531 spans 3 counties: Fulton County, Knox County and Peoria County. Most of it falls in Fulton 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 61531?
Farmington uses area code 309, from NANPA's telephone records.
What time zone is 61531 in?
61531 uses America/Chicago.
How many people live in 61531?
About 3,007 people live in ZIP code 61531, in 1,221 households, at 53.4 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 61531?
$70,107 a year, against $83,390 across Illinois.
What ZIP codes are near 61531?
The closest are 61553 (4.3 mi), 61432 (6.5 mi), 61569 (7.1 mi), 61572 (7.9 mi) and 61529 (8.6 mi).
Is 61531 a PO Box ZIP code?
61531 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “61531 ZIP Code — Farmington, Illinois (Fulton County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/61531
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/61531.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.