McHenry County, Illinois
Population estimates, July 1, 2025, (V2025) 317,751
People
Population
Population estimates, July 1, 2025, (V2025) 317,751
Population estimates, July 1, 2024, (V2024) 315,959
Population estimates base, April 1, 2020, (V2025) 310,305
Population estimates base, April 1, 2020, (V2024) 310,289
Population, percent change - April 1, 2020 (estimates base) to July 1, 2025, (V2025) 2.4%
Population, percent change - April 1, 2020 (estimates base) to July 1, 2024, (V2024) 1.8%
Population, Census, April 1, 2020 310,229
Population, Census, April 1, 2010 308,760
Age and Sex
Persons under 5 years, percent 5.2%
Persons under 18 years, percent 22.1%
Persons 65 years and over, percent 17.8%
Female persons, percent 49.9%
Race and Hispanic Origin
White alone, percent 91.7%
Black alone, percent(a) 2.2%
American Indian and Alaska Native alone, percent(a) 0.6%
Asian alone, percent(a) 3.6%
Native Hawaiian and Other Pacific Islander alone, percent(a) 0.1%
Two or More Races, percent 1.9%
Hispanic or Latino, percent(b) 17.0%
White alone, not Hispanic or Latino, percent 76.1%
Population Characteristics
Veterans, 2020-2024 13,409
Foreign-born persons, percent, 2020-2024 9.9%
Housing
Housing Units, July 1, 2025, (V2025) 124,493
Owner-occupied housing unit rate, 2020-2024 82.7%
Median value of owner-occupied housing units, 2020-2024 $308,100
Median selected monthly owner costs - with a mortgage, 2020-2024 $2,137
Median selected monthly owner costs - without a mortage, 2020-2024 $945
Median gross rent, 2020-2024 $1,401
Building Permits, 2025 1,393
Families & Living Arrangements
Households, 2020-2024 117,594
Persons per household, 2020-2024 2.64
Living in the same house 1 year ago, percent of persons age 1 year+ , 2020-2024 91.4%
Language other than English spoken at home, percent of persons age 5 years+, 2020-2024 16.1%
Computer and Internet Use
Households with a computer, percent, 2020-2024 97.7%
Households with a broadband Internet subscription, percent, 2020-2024 95.4%
Education
High school graduate or higher, percent of persons age 25 years+, 2020-2024 93.7%
Bachelor's degree or higher, percent of persons age 25 years+, 2020-2024 35.2%
Health
With a disability, under age 65 years, percent, 2020-2024 6.6%
Persons without health insurance, under age 65 years, percent 5.3%
Economy
In civilian labor force, total, percent of population age 16 years+, 2020-2024 69.6%
In civilian labor force, female, percent of population age 16 years+, 2020-2024 64.8%
Total accommodation and food services sales, 2022 ($1,000)(c) 687,284
Total health care and social assistance receipts/revenue, 2022 ($1,000)(c) 1,523,845
Total transportation and warehousing receipts/revenue, 2022 ($1,000)(c) 589,387
Total retail sales, 2022 ($1,000)(c) 4,775,303
Total retail sales per capita, 2022(c) $15,327
Transportation
Mean travel time to work (minutes), workers age 16 years+, 2020-2024 30.1
Income & Poverty
Median households income (in 2024 dollars), 2020-2024 $104,802
Per capita income in past 12 months (in 2024 dollars), 2020-2024 $49,388
Persons in poverty, percent 6.3%
Businesses
Businesses
Total employer establishments, 2023 8,140
Total employment, 2023 87,684
Total annual payroll, 2023 ($1,000) 4,811,044
Total employment, percent change, 2022-2023 2.4%
Total nonemployer establishments, 2023 26,379
All employer firms, Reference year 2023 6,546
Male-owned employer firms, Reference year 2023 4,248
Female-owned employer firms, Reference year 2023 1,365
Minority-owned employer firms, Reference year 2023 783
Nonminority-owned employer firms, Reference year 2023 5,241
Veteran-owned employer firms, Reference year 2023 S
Nonveteran-owned employer firms, Reference year 2023 5,774
Geography
Geography
Population per square mile, 2020 514.1
Population per square mile, 2010 511.9
Land area in square miles, 2020 603.40
Land area in square miles, 2010 603.17
FIPS Code 17111