61331
ZIP 61331 is Lee Center, Illinois, in Lee County; area code 815; Central time.
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Where 61331 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 61331 into a pocket calculator and turn it upside down: IEEIg — not quite a word, sorry.
- ➕ 61331 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 14, a total 1,416 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1110111110010011 - 🏠 Its numerical neighbours: 61330 (La Moille, IL, 15 mi away) and 61332 (Leonore, IL, 41 mi away).
- 🔄 Backwards, 61331 becomes 13316 — and that is a real ZIP code: Camden, NY, 698 miles away.
- 👥 22 other ZIP codes are made of exactly the same digits (11363, 13136, 13163, 13316, 13361, 13613, …). The farthest-flung twin is 33116 in Miami, FL, 1,219 miles away.
- 🧭 Farther north than 73% of all ZIP codes, and farther west than 54%.
- 🎯504 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 61331 and you would come out at 41.75°S, 90.72°E — 1,117 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 13m of daylight. Shortest: 9h 08m.
- 📏 At 0.028 square miles of land, 61331 is bigger than 0% of ZIP codes — about 14 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 0 |
|---|---|
| Households | 0 |
| Housing units | 0 |
| Population density | 0.0 / sq mi |
Land area
| Land area | 0.03 sq miThis ZIP0.03 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 61331
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 61331
| ZIP | City | Distance |
|---|---|---|
61310 | Amboy, IL | 5.1 mi |
61031 | Franklin Grove, IL | 6.1 mi |
61378 | West Brooklyn, IL | 6.5 mi |
61324 | Eldena, IL | 7.2 mi |
61057 | Nachusa, IL | 8.1 mi |
61367 | Sublette, IL | 8.8 mi |
61006 | Ashton, IL | 8.8 mi |
61318 | Compton, IL | 10.6 mi |
61021 | Dixon, IL | 11.7 mi |
60553 | Steward, IL | 13.4 mi |
Find every ZIP code within 10 miles of 61331 →
Questions about this ZIP code
Where is ZIP code 61331?
61331 is in Lee Center, Illinois, in Lee County, part of the Dixon, IL micropolitan area. Its published point location is 41.7477, -89.2775.
What county is 61331 in?
61331 lies in Lee County.
What area code is 61331?
Lee Center uses area code 815, from NANPA's telephone records.
What time zone is 61331 in?
61331 uses America/Chicago.
How many people live in 61331?
About 0 people live in ZIP code 61331. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 61331?
The closest are 61310 (5.1 mi), 61031 (6.1 mi), 61378 (6.5 mi), 61324 (7.2 mi) and 61057 (8.1 mi).
Is 61331 a PO Box ZIP code?
61331 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “61331 ZIP Code — Lee Center, Illinois (Lee County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/61331
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/61331.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.