Lake in the Hills is a city of 28,800 people in Illinois. Owners hold 84% of the housing stock. Few US cities rank higher on income. Households here earn about 40% more than in Illinois as a whole. There are 2,822 people per square mile. Households take in $117,151 a year at the median, 42% more than the country as a whole.
At a glance
Wealthier
median household income $117,151, above the US median
US median: $82,259
Younger
median age 36.8
US median: 38.9
Average education
36% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Lake in the Hills
What changed most since 1990
Population5,866 → 28,800(+391%)US over the same years: +35%
White share98.7% → 66.9%(−31.8 pts)US over the same years: −17.8 pts
Homes owned by their occupants93.9% → 84.4%(−9.5 pts)US over the same years: +0.9 pts
Lake in the Hills's population equals 9.2% of McHenry County's. Its number of veterans equals 4.6% of the county's. Its number of households without a car equals 4.2% of the county's.
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)19.6%(120)
US avg: 26.4%
Gulf War (1990s)36.2%(222)
US avg: 24.3%
Vietnam era27.7%(170)
US avg: 33.1%
Korean War4.9%(30)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 613 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Lake in the Hills, decade by decade
Lake in the Hills population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
5,866
$118,513
$229,927
14.7%
3.3
2000
23,152
$133,551
$303,123
32.5%
28.0
2010
28,965
$119,253
$354,320
31.6%
43.6
2020
28,982
$116,925
$286,041
38.8%
56.4
2024
28,800
$117,151
$321,900
35.8%
63.1
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
How many people live in Lake in the Hills, Illinois?
Lake in the Hills, Illinois has about 28,800 residents according to the 2024 American Community Survey.
What is the median household income in Lake in the Hills, Illinois?
The typical household in Lake in the Hills, Illinois earns about $117,151 a year. Half of households make more than that, and half make less.
Is Lake in the Hills, Illinois expensive?
In Lake in the Hills, Illinois, the median home is worth about $321,900, and the typical rent is about $1,689 a month.
How educated are people in Lake in the Hills, Illinois?
About 35.8% of adults age 25 and over in Lake in the Hills, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Lake in the Hills, Illinois?
About 4.1% of people in Lake in the Hills, Illinois live below the federal poverty line.
Has Lake in the Hills, Illinois grown since 1990?
Yes, Lake in the Hills, Illinois has grown since 1990. The population has added about 22,934 residents, a change of about 391 percent over that period.
