County ProfileIL
Lee County
Population: 34,145 · 14 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
34,145
People
Median age
43.1
Housing
Total households
13,337
Income
Median household income
$70,292
Housing
Total housing units
14,995
Employment
Employment rate
52.8%
Education
Bachelor’s degree or higher
19.4%
Healthcare
Insured population
96.2%
County details
Local time 00:50:27(CT)| Name | Lee |
|---|---|
| Total ZIP codes | 14total |
| ZIP codes (by type) | 11 Standard3 PO Box |
| Area code | 779, 815 |
| Timezone | Central Time (CT) |
| Coordinates | 41.7474465, -89.2993616 |
| Land area | 724.8 sq miles(1,877.1 km²) |
Map of Lee county, Illinois with ZIP codes
Cities and Communities in Lee County
Compare the largest cities in Lee County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
| City | Population | Median incomeHousehold | ZIP codes |
|---|---|---|---|
| Dixon | 15,274 | $59,406 | 1ZIPs |
| Amboy | 2,278 | $68,258 | 1ZIPs |
| Ashton | 967 | $62,778 | 1ZIPs |
| Franklin Grove | 896 | $58,618 | 1ZIPs |
| Paw Paw | 830 | $65,156 | 1ZIPs |
| Sublette | 380 | $66,250 | 1ZIPs |
| Lee | 313 | $82,000 | 1ZIPs |
| Compton | 274 | $57,500 | 1ZIPs |
| Steward | 229 | $102,500 | 1ZIPs |
| Lee Center | 146 | — | 1ZIPs |
| Nachusa | 137 | $108,438 | 1ZIPs |
| West Brooklyn | 131 | $76,250 | 1ZIPs |
| Harmon | 111 | $66,250 | 1ZIPs |
| Eldena | 102 | — | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Lee County
Review the most populated postal areas across Lee County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 61021 | Dixon | $69,127 | 22,984 |
| 61310 | Amboy | $69,756 | 3,700 |
| 61006 | Ashton | $75,938 | 1,640 |
| 61031 | Franklin Grove | $75,446 | 1,430 |
| 61353 | Paw Paw | $66,719 | 1,207 |
| 60553 | Steward | $109,375 | 703 |
| 61367 | Sublette | $60,824 | 691 |
| 61318 | Compton | $63,021 | 620 |
| 60530 | Lee | $96,250 | 577 |
| 61378 | West Brooklyn | $85,350 | 518 |
| 61042 | Harmon | $70,833 | 511 |
| 61057 | Nachusa | — | 108 |
| 61324 | Eldena | — | 102 |
| 61331 | Lee Center | — | 34 |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS