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Where 61108 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 61108 into a pocket calculator and turn it upside down: BOIIg — not quite a word, sorry.
- ➕ As a number, 61,108 = 2 × 2 × 15277. Its digits add up to 16, a total 1,922 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1110111010110100 - 🏠 Its numerical neighbours: 61107 (Rockford, IL, 2 mi away) and 61109 (Rockford, IL, 5 mi away).
- 🔄 Backwards, 61108 becomes 80116 — and that is a real ZIP code: Franktown, CO, 845 miles away.
- 👥 25 other ZIP codes are made of exactly the same digits (06118, 06811, 08611, 10168, 16018, 16108, …). The farthest-flung twin is 86011 in Flagstaff, AZ, 1,310 miles away.
- 🧭 Farther north than 77% of all ZIP codes, and farther west than 53%.
- 🎯526 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 61108 and you would come out at 42.26°S, 91.00°E — 1,109 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 16m of daylight. Shortest: 9h 05m.
- 📏 At 10.9 square miles of land, 61108 is bigger than 28% of ZIP codes — room for about 8.3 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 30,355This ZIP30,355 |
|---|---|
| Households | 12,102This ZIP12,102 |
| Housing units | 12,751This ZIP12,751 |
| Median age | 39.1This ZIP39.1Illinois39.0US 38.9 |
| Median household income | $64,415This ZIP$64,415Illinois$83,390US $80,734 |
| Median home value | $144,800This ZIP$144,800Illinois$263,300US $332,700 |
| Median gross rent | $1,013This ZIP$1,013Illinois$1,274US $1,413 |
| Bachelor's degree or higher | 24.7%This ZIP24.7% |
| Mean commute | 22.7 minThis ZIP22.7 min |
| Population density | 2,780.5 / sq miThis ZIP2,780.5 / sq mi |
Business and tax activity
| Business establishments | 920This ZIP920 |
|---|---|
| Employees | 18,746This ZIP18,746 |
| Annual payroll | $810,646,000This ZIP$810,646,000 |
| Tax returns filed | 14,190This ZIP14,190 |
| Total adjusted gross income | $795,525,000This ZIP$795,525,000 |
Land area
| Land area | 10.92 sq miThis ZIP10.92 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 61108
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 61108
| ZIP | City | Distance |
|---|---|---|
61112 | Rockford, IL | 1.7 mi |
61107 | Rockford, IL | 2.1 mi |
61114 | Rockford, IL | 3.6 mi |
61104 | Rockford, IL | 4.0 mi |
61105 | Rockford, IL | 4.8 mi |
61016 | Cherry Valley, IL | 4.9 mi |
61109 | Rockford, IL | 5.2 mi |
61111 | Loves Park, IL | 5.6 mi |
61103 | Rockford, IL | 7.3 mi |
61115 | Machesney Park, IL | 7.5 mi |
Find every ZIP code within 10 miles of 61108 →
Questions about this ZIP code
Where is ZIP code 61108?
61108 is in Rockford, Illinois, in Winnebago County, part of the Rockford, IL metropolitan area. Its published point location is 42.2552, -89.0023.
What county is 61108 in?
61108 lies in Winnebago County.
What area code is 61108?
Rockford uses area codes 815 and 779, from NANPA's telephone records.
What time zone is 61108 in?
61108 uses America/Chicago.
How many people live in 61108?
About 30,355 people live in ZIP code 61108, in 12,102 households, at 2,780.5 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 61108?
$64,415 a year, against $83,390 across Illinois.
What ZIP codes are near 61108?
The closest are 61112 (1.7 mi), 61107 (2.1 mi), 61114 (3.6 mi), 61104 (4 mi) and 61105 (4.8 mi).
Is 61108 a PO Box ZIP code?
61108 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “61108 ZIP Code — Rockford, Illinois (Winnebago County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/61108
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/61108.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.