61091
ZIP 61091 is Woosung, Illinois, in Ogle County; area codes 815 and 779; Central time.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Ogle
- Metro area
- Rochelle, IL
- Population
- 248
- Coordinates
- 41.9082, -89.5524
Weather right now
Asking the National Weather Service…
Where 61091 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 61091 into a pocket calculator and turn it upside down: IGOIg — not quite a word, sorry.
- ➕ 61091 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 17, a total 2,133 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1110111010100011 - 🏠 Its numerical neighbours: 61089 (Winslow, IL, 41 mi away) and 61101 (Rockford, IL, 37 mi away).
- 🔄 Backwards, 61091 becomes 19016 — and that is a real ZIP code: Chester, PA, 750 miles away.
- 👥 30 other ZIP codes are made of exactly the same digits (01961, 06119, 06911, 10169, 10916, 11096, …). The farthest-flung twin is 96011 in Big Bend, CA, 1,665 miles away.
- 🧭 Farther north than 75% of all ZIP codes, and farther west than 55%.
- 🎯493 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 61091 and you would come out at 41.91°S, 90.45°E — 1,100 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 14m of daylight. Shortest: 9h 07m.
- 📏 At 2.5 square miles of land, 61091 is bigger than 13% of ZIP codes — room for about 1.9 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 248This ZIP248 |
|---|---|
| Households | 43This ZIP43 |
| Housing units | 78This ZIP78 |
| Median age | 20.0This ZIP20.0Illinois39.0US 38.9 |
| Bachelor's degree or higher | 0.0% |
| Population density | 98.3 / sq miThis ZIP98.3 / sq mi |
Land area
| Land area | 2.52 sq miThis ZIP2.52 sq mi |
|---|---|
| Water area | 0.00 sq mi |
ZIP codes near 61091
| ZIP | City | Distance |
|---|---|---|
61064 | Polo, IL | 5.9 mi |
61021 | Dixon, IL | 6.7 mi |
61057 | Nachusa, IL | 10.1 mi |
61081 | Sterling, IL | 10.4 mi |
61054 | Mount Morris, IL | 11.6 mi |
61324 | Eldena, IL | 11.9 mi |
61051 | Milledgeville, IL | 11.9 mi |
61061 | Oregon, IL | 12.5 mi |
61031 | Franklin Grove, IL | 13.1 mi |
61037 | Galt, IL | 13.5 mi |
Find every ZIP code within 10 miles of 61091 →
Questions about this ZIP code
Where is ZIP code 61091?
61091 is in Woosung, Illinois, in Ogle County, part of the Rochelle, IL micropolitan area. Its published point location is 41.9082, -89.5524.
What county is 61091 in?
61091 lies in Ogle County.
What area code is 61091?
Woosung uses area codes 815 and 779, from NANPA's telephone records.
What time zone is 61091 in?
61091 uses America/Chicago.
How many people live in 61091?
About 248 people live in ZIP code 61091, in 43 households, at 98.3 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 61091?
The closest are 61064 (5.9 mi), 61021 (6.7 mi), 61057 (10.1 mi), 61081 (10.4 mi) and 61054 (11.6 mi).
Is 61091 a PO Box ZIP code?
61091 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “61091 ZIP Code — Woosung, Illinois (Ogle County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/61091
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/61091.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.