COUNTY · 2000 CENSUS

McHenry County

Illinois · 260,077 residents · 603.397 sq mi

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The short version

McHenry County is significantly wealthier than the US average, with a median household income of $64,826. Population has grown 42% since 1990. Median home value has risen by half since 1990, reaching $167,400. Poverty is rare here, at 3.7% of residents. Households here earn about 39% more than the Illinois median.

At a glance

Wealthier

above the US median

US median: $42,589

Mid-age

median age 34.2

US median: 35.2

More educated

28% hold a bachelor's degree

US average: 24%

Stable housing

home values roughly flat, inflation adjusted

US median home: $120,530

Section 01

Population & growth

Total population

260,077

+42%since 1990

from 183,241 in 1990

1990 – 2025

Population density

431 / sq mi

+42%since 1990

from 304 / sq mi in 1990

US average: 242

Median age

34.2

+6%since 1990

from 32.4 in 1990

US average: 35.2

Population, 1990 – 2024

2024313K

Section 02

Income & economy

Median household income

$64,826

+13%inflation adjusted, since 1990

from $43,471 in 1990

US average: $42,589

1990 – 2024

Per capita income

$26,476

+53%since 1990

from $17,271 in 1990

US average: $21,522

Poverty rate

3.7%

+0.2 ptssince 1990

from 3.5% in 1990

US average: 12.4%

Section 03

Housing

Median home value

$167,400

+15%inflation adjusted, since 1990

from $110,600 in 1990

US average: $120,530

1990 – 2024

Median gross rent

$761

+8%inflation adjusted, since 1990

from $537 in 1990

US average: $602

Owner-occupied

83.2%

+3.3 ptssince 1990

from 79.9% in 1990

16.8% rent

Afford Score

2.6

+1%since 1990

from 2.5 in 1990

1990 – 2024

RELATED:See current rent listings in McHenry County on RentDataNow

Section 04

Race & ethnicity

1990

White, non-Hispanic97.6%(178,873)

Black0.2%(423)

Hispanic / Latino3.2%(5,900)

Asian0.6%(1,187)

Diversity Score13%(23,912)

2000

White, non-Hispanic89.6%(233,026)

Black0.5%(1,379)

Hispanic / Latino7.5%(19,602)

Asian1.4%(3,734)

Diversity Score22.1%(57,400)

Diversity Score

+69%since 1990

from 13 in 1990

1990 – 2024

Section 05

Education

Bachelor's degree or higher

27.7%

+6.8 ptssince 1990

from 21.0% in 1990

US average: 24.4%

High school or higher

89.2%

+4.7 ptssince 1990

from 84.5% in 1990

US average: 80.3%

Graduate degree

8.2%

+1.8 ptssince 1990

from 6.4% in 1990

US average: 8.8%

Section 06

Commute & transportation

Average commute

25.2 min

−10%since 1990

from 27.8 min in 1990

US average: 17.6

Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Drill deeper

Places similar to McHenry County

Head to head

Compare McHenry County to nearby counties

MCHENRY COUNTY VS

Boone County

Income$84,571+30%

Home value$216,900+30%

Population53,568−83%

SEE FULL COMPARISON →

MCHENRY COUNTY VS

Walworth County

Income$80,520+24%

Home value$302,700+81%

Population106,127−67%

SEE FULL COMPARISON →

MCHENRY COUNTY VS

Kane County

Income$103,163+59%

Home value$327,000+95%

Population525,757+65%

SEE FULL COMPARISON →

MCHENRY COUNTY VS

DeKalb County

Income$70,724+9%

Home value$243,600+46%

Population101,835−68%

SEE FULL COMPARISON →

Frequently asked

How many people live in McHenry County, Illinois?

McHenry County, Illinois has about 260,077 residents according to the 2000 Census.

What is the median household income in McHenry County, Illinois?

The typical household in McHenry County, Illinois earns about $64,826 a year. Half of households make more than that, and half make less.

Is McHenry County, Illinois expensive?

In McHenry County, Illinois, the median home is worth about $167,400, and the typical rent is about $761 a month.

How educated are people in McHenry County, Illinois?

About 27.7% of adults age 25 and over in McHenry County, Illinois hold a bachelor's degree or higher.

What is the poverty rate in McHenry County, Illinois?

About 3.7% of people in McHenry County, Illinois live below the federal poverty line.

Has McHenry County, Illinois grown since 1990?

Yes, McHenry County, Illinois has grown since 1990. The population has added about 76,836 residents, a change of about 42 percent over that period.

DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →

McHenry County

Population & growth

Income & economy

Housing

Race & ethnicity

Education

Commute & transportation

Work & employment

People & community

Places similar to McHenry County

Compare McHenry County to nearby counties

How many people live in McHenry County, Illinois?

What is the median household income in McHenry County, Illinois?

Is McHenry County, Illinois expensive?

How educated are people in McHenry County, Illinois?

What is the poverty rate in McHenry County, Illinois?

Has McHenry County, Illinois grown since 1990?

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