County ProfileIL
McHenry County
Population: 310,229 · 21 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
310,229
People
Median age
40.7
Housing
Total households
117,594
Income
Median household income
$104,802
Housing
Total housing units
121,329
Employment
Employment rate
66.4%
Education
Bachelor’s degree or higher
35.2%
Healthcare
Insured population
95.5%
County details
Local time 01:43:40(CT)| Name | McHenry |
|---|---|
| Total ZIP codes | 21total |
| ZIP codes (by type) | 20 Standard1 PO Box |
| Area code | 217, 224, 447, 779, 815, 847 |
| Timezone | Central Time (CT) |
| Coordinates | 42.3242982, -88.452245 |
| Land area | 603.4 sq miles(1,562.8 km²) |
Map of McHenry county, Illinois with ZIP codes
Cities and Communities in McHenry County
Compare the largest cities in McHenry 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 |
|---|---|---|---|
| Crystal Lake | 40,269 | $108,418 | 3ZIPs |
| Algonquin | 29,700 | $134,525 | 1ZIPs |
| Lake in the Hills | 28,982 | $117,151 | 1ZIPs |
| Huntley | 27,740 | $88,536 | 1ZIPs |
| Mchenry | 27,135 | $86,315 | 2ZIPs |
| Woodstock | 25,630 | $82,758 | 1ZIPs |
| Cary | 17,826 | $113,026 | 1ZIPs |
| Harvard | 9,469 | $67,617 | 1ZIPs |
| Island Lake | 8,051 | $103,156 | 1ZIPs |
| Marengo | 7,568 | $73,523 | 1ZIPs |
| Spring Grove | 5,487 | $134,210 | 1ZIPs |
| Fox River Grove | 4,702 | $121,506 | 1ZIPs |
| Lakewood | 4,283 | $173,625 | 1ZIPs |
| Wonder Lake | 3,973 | $94,655 | 1ZIPs |
| Richmond | 2,089 | $73,029 | 1ZIPs |
| Hebron | 1,368 | $85,375 | 1ZIPs |
| Ringwood | 844 | $143,750 | 1ZIPs |
| Union | 551 | $89,844 | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in McHenry County
Review the most populated postal areas across McHenry County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 60014 | Crystal Lake | $109,016 | 48,275 |
| 60098 | Woodstock | $91,062 | 33,153 |
| 60102 | Algonquin | $132,949 | 31,959 |
| 60050 | Mchenry | $88,812 | 31,854 |
| 60142 | Huntley | $89,735 | 29,831 |
| 60156 | Lake in the Hills | $117,151 | 28,982 |
| 60013 | Cary | $120,604 | 26,144 |
| 60051 | Mchenry | $100,762 | 24,649 |
| 60033 | Harvard | $68,633 | 13,581 |
| 60152 | Marengo | $98,451 | 12,382 |
| 60012 | Crystal Lake | $159,375 | 10,916 |
| 60097 | Wonder Lake | $93,397 | 10,849 |
| 60081 | Spring Grove | $116,706 | 9,396 |
| 60042 | Island Lake | $99,917 | 8,433 |
| 60021 | Fox River Grove | $119,176 | 5,404 |
| 60071 | Richmond | $74,426 | 3,891 |
| 60034 | Hebron | $87,188 | 2,148 |
| 60180 | Union | $110,070 | 1,568 |
| 60072 | Ringwood | $119,375 | 988 |
| 62438 | Lakewood | $71,786 | 286 |
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