Weather right now
Asking the National Weather Service…
Where 61021 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 61021 into a pocket calculator and turn it upside down: IZOIg — not quite a word, sorry.
- ➕ As a number, 61,021 = 139 × 439. Its digits add up to 10, a total 513 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1110111001011101 - 🏠 Its numerical neighbours: 61020 (Davis Junction, IL, 27 mi away) and 61024 (Durand, IL, 43 mi away).
- 🔄 Backwards, 61021 becomes 12016 — and that is a real ZIP code: Auriesville, NY, 776 miles away.
- 👥 32 other ZIP codes are made of exactly the same digits (01612, 02116, 06112, 10126, 10162, 10261, …). The farthest-flung twin is 02116 in Boston, MA, 942 miles away.
- 🧭 Farther north than 74% of all ZIP codes, and farther west than 54%.
- 🎯495 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 61021 and you would come out at 41.83°S, 90.52°E — 1,106 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 150.1 square miles of land, 61021 is bigger than 86% of ZIP codes — room for about 114 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 22,308This ZIP22,308 |
|---|---|
| Households | 8,838This ZIP8,838 |
| Housing units | 10,010This ZIP10,010 |
| Median age | 43.4This ZIP43.4Illinois39.0US 38.9 |
| Median household income | $69,127This ZIP$69,127Illinois$83,390US $80,734 |
| Median home value | $148,500This ZIP$148,500Illinois$263,300US $332,700 |
| Median gross rent | $879This ZIP$879Illinois$1,274US $1,413 |
| Bachelor's degree or higher | 21.1%This ZIP21.1% |
| Mean commute | 21.3 minThis ZIP21.3 min |
| Population density | 148.7 / sq miThis ZIP148.7 / sq mi |
Business and tax activity
| Business establishments | 493This ZIP493 |
|---|---|
| Employees | 8,506This ZIP8,506 |
| Annual payroll | $437,902,000This ZIP$437,902,000 |
| Tax returns filed | 10,380This ZIP10,380 |
| Total adjusted gross income | $742,588,000This ZIP$742,588,000 |
Land area
| Land area | 150.06 sq miThis ZIP150.06 sq mi |
|---|---|
| Water area | 3.31 sq miThis ZIP3.31 sq mi |
Counties 61021 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Lee County | 89.6% |
| Ogle County | 10.4% |
Other place names in 61021
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 61021
| ZIP | City | Distance |
|---|---|---|
61057 | Nachusa, IL | 4.8 mi |
61324 | Eldena, IL | 5.3 mi |
61091 | Woosung, IL | 6.7 mi |
61031 | Franklin Grove, IL | 8.0 mi |
61042 | Harmon, IL | 10.3 mi |
61310 | Amboy, IL | 10.8 mi |
61331 | Lee Center, IL | 11.7 mi |
61064 | Polo, IL | 12.4 mi |
61071 | Rock Falls, IL | 13.5 mi |
61061 | Oregon, IL | 13.6 mi |
Find every ZIP code within 10 miles of 61021 →
Questions about this ZIP code
Where is ZIP code 61021?
61021 is in Dixon, Illinois, in Lee County, part of the Dixon, IL micropolitan area. Its published point location is 41.8295, -89.4771.
What county is 61021 in?
61021 spans 2 counties: Lee County and Ogle County. Most of it falls in Lee 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 61021?
Dixon uses area codes 815 and 779, from NANPA's telephone records.
What time zone is 61021 in?
61021 uses America/Chicago.
How many people live in 61021?
About 22,308 people live in ZIP code 61021, in 8,838 households, at 148.7 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 61021?
$69,127 a year, against $83,390 across Illinois.
What ZIP codes are near 61021?
The closest are 61057 (4.8 mi), 61324 (5.3 mi), 61091 (6.7 mi), 61031 (8 mi) and 61042 (10.3 mi).
Is 61021 a PO Box ZIP code?
61021 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “61021 ZIP Code — Dixon, Illinois (Lee County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/61021
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/61021.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.