County ProfileIL
Lake County
Population: 714,342 · 29 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
714,342
People
Median age
39.1
Housing
Total households
258,455
Income
Median household income
$110,416
Housing
Total housing units
270,618
Employment
Employment rate
62.7%
Education
Bachelor’s degree or higher
47.7%
Healthcare
Insured population
93.1%
County details
Local time 01:47:53(CT)| Name | Lake |
|---|---|
| Total ZIP codes | 29total |
| ZIP codes (by type) | 26 Standard2 PO Box1 Unique |
| Area code | 224, 779, 815, 847 |
| Timezone | Central Time (CT) |
| Coordinates | 42.1859677, -87.8059389 |
| Land area | 443.7 sq miles(1,149.1 km²) |
Map of Lake county, Illinois with ZIP codes
Cities and Communities in Lake County
Compare the largest cities in Lake 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 |
|---|---|---|---|
| Waukegan | 89,321 | $71,919 | 3ZIPs |
| Buffalo Grove | 43,212 | $129,395 | 1ZIPs |
| Mundelein | 31,560 | $108,340 | 1ZIPs |
| North Chicago | 30,759 | $60,172 | 2ZIPs |
| Gurnee | 30,706 | $119,628 | 1ZIPs |
| Highland Park | 30,176 | $168,094 | 1ZIPs |
| Vernon Hills | 26,850 | $121,943 | 1ZIPs |
| Zion | 24,655 | $63,104 | 1ZIPs |
| Grayslake | 21,248 | $113,972 | 1ZIPs |
| Libertyville | 20,579 | $165,667 | 1ZIPs |
| Lake Zurich | 19,759 | $135,968 | 1ZIPs |
| Lake Forest | 19,367 | $235,081 | 1ZIPs |
| Deerfield | 19,196 | $181,660 | 1ZIPs |
| Round Lake | 18,721 | $111,977 | 1ZIPs |
| Antioch | 14,622 | $108,899 | 1ZIPs |
| Great Lakes | 14,188 | — | 1ZIPs |
| Wauconda | 14,084 | $111,239 | 1ZIPs |
| Fox Lake | 10,978 | $70,819 | 1ZIPs |
| Ingleside | 9,140 | — | 1ZIPs |
| Lake Villa | 8,741 | $118,750 | 1ZIPs |
| Lincolnshire | 7,940 | $185,580 | 1ZIPs |
| Winthrop Harbor | 6,705 | $95,690 | 1ZIPs |
| Lake Bluff | 5,616 | $204,000 | 1ZIPs |
| Highwood | 5,074 | $107,875 | 1ZIPs |
| Wadsworth | 3,517 | $142,738 | 1ZIPs |
| Russell | 40 | — | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Lake County
Review the most populated postal areas across Lake County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 60085 | Waukegan | $66,793 | 71,609 |
| 60073 | Round Lake | $98,514 | 61,721 |
| 60047 | Lake Zurich | $176,081 | 43,944 |
| 60089 | Buffalo Grove | $129,401 | 43,227 |
| 60031 | Gurnee | $111,034 | 37,650 |
| 60060 | Mundelein | $110,335 | 37,599 |
| 60030 | Grayslake | $104,795 | 36,346 |
| 60046 | Lake Villa | $126,042 | 34,690 |
| 60099 | Zion | $66,109 | 31,579 |
| 60035 | Highland Park | $168,094 | 30,152 |
| 60048 | Libertyville | $173,975 | 29,353 |
| 60087 | Waukegan | $76,738 | 28,207 |
| 60015 | Deerfield | $183,125 | 28,013 |
| 60061 | Vernon Hills | $124,468 | 27,581 |
| 60002 | Antioch | $104,981 | 24,086 |
| 60045 | Lake Forest | $233,125 | 21,026 |
| 60084 | Wauconda | $110,090 | 17,029 |
| 60064 | North Chicago | $49,195 | 15,206 |
| 60088 | Great Lakes | $66,008 | 14,188 |
| 60020 | Fox Lake | $73,949 | 10,967 |
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