McHenry County, Illinois Population 2020

McHenry County, Illinois's estimated population is 308,013 with a growth rate of 0.23% in the past year according to the most recent United States census data. McHenry County, Illinois is the 6th largest county in Illinois.

Year Population Growth Growth Rate
2018308,5705570.18%
2017308,0137170.23%
2016307,296-354-0.12%
2015307,6502360.08%
2014307,414-173-0.06%
2013307,587-593-0.19%
2012308,180-253-0.08%
2011308,433-628-0.20%
2010309,061125,82068.66%
1990183,24135,34423.90%
1980147,89736,34232.58%
1970111,55527,34532.47%
196084,21033,55466.24%
195050,65613,34535.77%
194037,3112,2326.36%
193035,0791,9155.77%
192033,1646552.01%
191032,5092,7509.24%
190029,7593,64513.96%
189026,1141,2064.84%
188024,9081,1464.82%
187023,7621,6737.57%
186022,0897,11147.48%
185014,97812,400480.99%
18402,5780.00%

How Many People Live in McHenry County, Illinois?

308,013

McHenry County, Illinois Population Growth

Population by Race

Race Population Percentage
White284,36692.39%
Asian8,3382.71%
Two or More Races5,6881.85%
Some Other Race4,5571.48%
Black or African American4,4731.45%
American Indian and Alaska Native2980.10%
Native Hawaiian and Other Pacific Islander690.02%

McHenry County, Illinois Population Pyramid 2020

McHenry County, Illinois Median Age

40.2


Total

39


Male

41


Female

McHenry County, Illinois Adults

There are 233,358 adults, (41,446 of whom are seniors) in McHenry County, Illinois.

McHenry County, Illinois Age Dependency

60.4

Age Dependency Ratio

21.6

Old Age Dependency Ratio

38.8

Child Dependency Ratio

McHenry County, Illinois Sex Ratio

Female

154,407

50.17%

Male

153,382

49.83%

McHenry County, Illinois Households and Families

McHenry County, Illinois Renter vs Owner Occupied by Household Type

McHenry County, Illinois Household Types

Type Owner Renter
Married88.4%11.6%
All79.3%20.7%
Male67.6%32.4%
Non Family66.4%33.6%
Female59.1%40.9%

79.3%

Rate of Home Ownership

Type Count Average Size Owned
All111,8122.7479.3
Married68,4373.2788.4
Non Family28,2711.2566.4
Female10,3733.159.1
Male4,7313.1267.6

3.17

Average Family Size

2.74

Average Household Size

5.9%

Unmarried (Opposite Sex)

0.2%

Unmarried (Same Sex)

McHenry County, Illinois Education

Education Attained Count Percentage
Less Than 9th Grade6,1452.97%
9th to 12th Grade8,7284.22%
High School Graduate54,10726.15%
Some College48,91323.64%
Associates Degree19,3029.33%
Bachelors Degree46,46122.45%
Graduate Degree23,25311.24%

McHenry County, Illinois Educational Attainment by Race

Name Total High School Bachelors
White176,682169,01661,822
Hispanic20,24014,0292,725
Asian5,7255,0033,474
Other Race2,7381,693200
Black2,5412,3811,081
Multiple Races1,9071,795662
Native American26822915
Islander206

The highest rate of high school graduation is among white people with a rate of 95.66%.

The highest rate of bachelors degrees is among asian people with a rate of 60.68%.

Name Average Male Female
Overall$48,186$60,828$36,479
Less Than High School$26,685$31,635$20,677
High School Grad$39,317$47,839$27,887
Some College$44,608$58,333$32,863
Bachelors Degree$64,093$85,344$45,496
Graduate Degree$74,916$101,766$60,509

$48,186

Average Earnings

$60,828

Average Male

$36,479

Average Female

McHenry County, Illinois Language

McHenry County, Illinois Language by Age

McHenry County, Illinois Language

85.63% of McHenry County, Illinois residents speak only English, while 14.37% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 8.96% of the population.

McHenry County, Illinois Poverty

McHenry County, Illinois Poverty by Race

Name Total In Poverty Poverty Rate
White249,48813,1985.29%
Hispanic38,7716,21416.03%
Black4,29298522.95%
Other4,53686619.09%
Asian8,3066818.20%
Multiple5,62162011.03%
Native2984113.76%
Islander691318.84%

7.09%

Overall Poverty Rate

6.70%

Male Poverty Rate

7.48%

Female Poverty Rate

Poverty in McHenry County, Illinois

The race most likely to be in poverty in McHenry County, Illinois is Black, with 22.95% below the poverty level.

The race least likely to be in poverty in McHenry County, Illinois is White, with 5.29% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.29%. Among those working part-time, it was 8.84%, and for those that did not work, the poverty rate was 12.41%.

Name Poverty
Less Than High School17.17%
High School7.75%
Some College5.38%
Bachelors or Greater2.54%
Name Poverty
Male Unemployed18.70%
Female Unemployed17.32%
Female Employed4.22%
Male Employed2.84%

McHenry County, Illinois Income

McHenry County, Illinois Income by Household Type

Name Median Mean
Households$84,803$103,328
Families$97,998$116,067
Married Families$107,783$126,996
Non Families$45,812$60,739

McHenry County, Illinois Marital Status

McHenry County, Illinois Marital Status

Marriage Rates

57.7%

Overall Marriage Rate

58.5%

Male Marriage Rate

56.8%

Female Marriage Rate

McHenry County, Illinois Married by Age and Sex

McHenry County, Illinois Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 45-54.

McHenry County, Illinois Marital Status by Race

McHenry County, Illinois Veterans

15,224

Number of Veterans

14,070

Male Veterans

1,154

Female Veterans

War Veterans
Vietnam5,890
First Gulf War2,824
Second Gulf War2,262
Korea1,191
World War II698
Name Veterans % of Total
White14,7516.78%
Hispanic5662.29%
2 or More1696.41%
Black1494.79%
Asian1131.76%
Other290.86%
Indian134.85%

$McHenry County, Illinois Veterans by Education

3.45%

Veteran Poverty Rate

26.57%

Veteran Disability Rate

McHenry County, Illinois Employment Status

70.3%

Labor Force Participation

67.2%

Employment Rate

4.4%

Unemployment Rate

McHenry County, Illinois Place of Birth

Origin of Non-Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

72.42%

Born in Illinois

90.40%

Native Born

9.60%

Foreign Born

4.22%

Non Citizen

Place of Birth

90.40% of McHenry County, Illinois residents were born in the United States, with 72.42% having been born in Illinois. 4.22% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990