61311
ZIP 61311 is Ancona, Illinois, in Livingston County; area codes 779 and 815; Central time.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Livingston
- Metro area
- Pontiac, IL
- Population
- 180
- Coordinates
- 41.0402, -88.8622
Weather right now
Asking the National Weather Service…
Where 61311 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 61311 into a pocket calculator and turn it upside down: IIEIg — not quite a word, sorry.
- ➕ As a number, 61,311 = 3 × 107 × 191. Its digits add up to 12, a total 940 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1110111101111111 - 🏠 Its numerical neighbours: 61310 (Amboy, IL, 52 mi away) and 61312 (Arlington, IL, 33 mi away).
- 🔄 Backwards, 61311 becomes 11316, which is not a ZIP code at all.
- 👥 9 other ZIP codes are made of exactly the same digits (11361, 13116, 13611, 16113, 16131, 16311, …). The farthest-flung twin is 11361 in Bayside, NY, 787 miles away.
- 🧭 Farther north than 67% of all ZIP codes, and farther west than 53%.
- 🎯518 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 61311 and you would come out at 41.04°S, 91.14°E — 1,164 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 13m.
- 📏 At 16.4 square miles of land, 61311 is bigger than 34% of ZIP codes — room for about 12 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 180This ZIP180 |
|---|---|
| Households | 109This ZIP109 |
| Housing units | 109This ZIP109 |
| Median age | 65.9This ZIP65.9Illinois39.0US 38.9 |
| Median home value | $118,500This ZIP$118,500Illinois$263,300US $332,700 |
| Bachelor's degree or higher | 19.3%This ZIP19.3% |
| Population density | 11.0 / sq miThis ZIP11.0 / sq mi |
Business and tax activity
| Tax returns filed | 100This ZIP100 |
|---|---|
| Total adjusted gross income | $8,152,000This ZIP$8,152,000 |
Land area
| Land area | 16.35 sq miThis ZIP16.35 sq mi |
|---|---|
| Water area | 0.00 sq mi |
ZIP codes near 61311
| ZIP | City | Distance |
|---|---|---|
61333 | Long Point, IL | 3.8 mi |
61364 | Streator, IL | 6.1 mi |
61319 | Cornell, IL | 6.6 mi |
61321 | Dana, IL | 7.8 mi |
61377 | Wenona, IL | 9.5 mi |
61740 | Flanagan, IL | 10.2 mi |
61358 | Rutland, IL | 10.3 mi |
61313 | Blackstone, IL | 10.3 mi |
61743 | Graymont, IL | 12.0 mi |
61332 | Leonore, IL | 12.1 mi |
Find every ZIP code within 10 miles of 61311 →
Questions about this ZIP code
Where is ZIP code 61311?
61311 is in Ancona, Illinois, in Livingston County, part of the Pontiac, IL micropolitan area. Its published point location is 41.0402, -88.8622.
What county is 61311 in?
61311 lies in Livingston County.
What area code is 61311?
Ancona uses area codes 779 and 815, from NANPA's telephone records.
What time zone is 61311 in?
61311 uses America/Chicago.
How many people live in 61311?
About 180 people live in ZIP code 61311, in 109 households, at 11.0 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 61311?
The closest are 61333 (3.8 mi), 61364 (6.1 mi), 61319 (6.6 mi), 61321 (7.8 mi) and 61377 (9.5 mi).
Is 61311 a PO Box ZIP code?
61311 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “61311 ZIP Code — Ancona, Illinois (Livingston County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/61311
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/61311.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.