McHenry County, IL
Demographics & Statistics
Updated: 2025-10-25
Updated: 2025-10-25
Life in Mchenry County research summary. HomeSnacks has been researching the quality of life in Mchenry County over the past eight years using Census data, FBI crime data, cost of living data, and other primary sources. Based on the most recently available data, we found the following about life in Mchenry County:
The population in Mchenry County is 311,366.
The median home value in Mchenry County is $355,660.
The median income in Mchenry County is $102,836.
The median rent in Mchenry County is $1,358.
The unemployment rate in Mchenry County is 4.7%.
The poverty rate in Mchenry County is 6.1%.
The average high in Mchenry County is 65.4° and there are 82.6 inches of rainfall annually.
The average high in Mchenry County is 65.4°.
There are 73.88 nice days each year.
Expect an average of 82.6 inches of rain each year with 11.6 inches of snow.
There is an average of 4:35 hours of sun each day in Mchenry County.
| Stat | Mchenry County |
|---|---|
| Mean High | 65.4 |
| Nice Days | 73.88 |
| Rainfall | 82.6 |
| Snowfall | 11.6 |
| Sunny Hours | 4:35 |
The current population in Mchenry County is 311,366. The population has increased 1.0% from 2019.
| Year | Population | % Change |
|---|---|---|
| 2023 | 310,749 | 1.1% |
| 2022 | 307,291 | -0.1% |
| 2021 | 307,714 | - |
Mchenry County is 49.9% female with 155,493 female residents.
Mchenry County is 50.1% male with 155,872 male residents.
| Gender | Mchenry County | IL | USA |
|---|---|---|---|
| Female | 49.9% | 50.6% | 50.5% |
| Male | 50.1% | 49.4% | 49.5% |
Mchenry County is:
76.9% White with 239,568 White residents.
1.4% African American with 4,512 African American residents.
0.0% American Indian with 145 American Indian residents.
2.8% Asian with 8,824 Asian residents.
0.0% Hawaiian with 14 Hawaiian residents.
0.3% Other with 781 Other residents.
2.9% Two Or More with 8,965 Two Or More residents.
15.6% Hispanic with 48,557 Hispanic residents.
| Race | Mchenry County | IL | USA |
|---|---|---|---|
| White | 76.9% | 58.7% | 58.2% |
| African American | 1.4% | 13.6% | 12.0% |
| American Indian | 0.0% | 0.1% | 0.5% |
| Asian | 2.8% | 5.8% | 5.7% |
| Hawaiian | 0.0% | 0.0% | 0.2% |
| Other | 0.3% | 0.3% | 0.5% |
| Two Or More | 2.9% | 3.0% | 3.9% |
| Hispanic | 15.6% | 18.5% | 19.0% |
2.7% of households in Mchenry County earn Less than $10,000.
1.7% of households in Mchenry County earn $10,000 to $14,999.
3.7% of households in Mchenry County earn $15,000 to $24,999.
4.7% of households in Mchenry County earn $25,000 to $34,999.
8.2% of households in Mchenry County earn $35,000 to $49,999.
14.0% of households in Mchenry County earn $50,000 to $74,999.
13.5% of households in Mchenry County earn $75,000 to $99,999.
21.7% of households in Mchenry County earn $100,000 to $149,999.
13.1% of households in Mchenry County earn $150,000 to $199,999.
16.7% of households in Mchenry County earn $200,000 or more.
| Income | Mchenry County | IL | USA |
|---|---|---|---|
| Less than $10,000 | 2.7% | 5.2% | 4.9% |
| $10,000 to $14,999 | 1.7% | 3.4% | 3.6% |
| $15,000 to $24,999 | 3.7% | 6.2% | 6.6% |
| $25,000 to $34,999 | 4.7% | 6.5% | 6.8% |
| $35,000 to $49,999 | 8.2% | 9.9% | 10.4% |
| $50,000 to $74,999 | 14.0% | 15.1% | 15.7% |
| $75,000 to $99,999 | 13.5% | 12.7% | 12.7% |
| $100,000 to $149,999 | 21.7% | 17.9% | 17.4% |
| $150,000 to $199,999 | 13.1% | 9.9% | 9.3% |
| $200,000 or more | 16.7% | 13.1% | 12.6% |
3.0% of adults in Mchenry County completed < 9th grade.
4.0% of adults in Mchenry County completed 9-12th grade.
27.0% of adults in Mchenry County completed high school / ged.
22.0% of adults in Mchenry County completed some college.
9.0% of adults in Mchenry County completed associate's degree.
23.0% of adults in Mchenry County completed bachelor's degree.
9.0% of adults in Mchenry County completed master's degree.
2.0% of adults in Mchenry County completed professional degree.
1.0% of adults in Mchenry County completed doctorate degree.
| Education | Mchenry County | IL | USA |
|---|---|---|---|
| < 9th Grade | 3% | 5% | 5% |
| 9-12th Grade | 4% | 5% | 6% |
| High School / GED | 27% | 25% | 26% |
| Some College | 22% | 20% | 19% |
| Associate's Degree | 9% | 8% | 9% |
| Bachelor's Degree | 23% | 22% | 21% |
| Master's Degree | 9% | 11% | 10% |
| Professional Degree | 2% | 2% | 2% |
| Doctorate Degree | 1% | 2% | 2% |
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