Lake in the Hills, Illinois Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Lake in the Hills, IL Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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A
Health Above average
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B
Income Around average
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B
Education Around average
Source: Map AI Methodology
Population
| Metric | Lake in the Hills | Illinois Avg | U.S. Average |
|---|---|---|---|
| Population | 25,084 | 12,692,444 | 337,468,954 |
| Population density (per sq mi) | 2402.9 | 219.1 | 86.4 |
| Population growth (%/yr) | -0.74% | -0.16% | 0.59% |
| Median age | 38.5 | 37.4 | 37.3 |
| Households | 8,698 | 5,035,584 | 130,235,071 |
Population in Lake in the Hills declined by 14.6% from 2009 to 2024, reaching 25,084 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Lake in the Hills is Millennials, aged 29–44, at 23.8% of residents. That is 1.9 points above Illinois as a whole.
- Gen Z 13–28 5,456 21.8% +0.5 pts
- Millennials 29–44 5,973 23.8% +1.9 pts
- Gen X 45–60 5,878 23.4% +3.0 pts
- Boomers 61–79 2,879 11.5% -5.4 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Illinois, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 50.1% of the people living in Lake in the Hills and men 49.9%.
- Women 50.1% Illinois 50.6%
- Men 49.9% Illinois 49.4%
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Economy
Lake in the Hills has a the economy index of B, which means it is quite prosperous.
| Metric | Lake in the Hills | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median household income | $111,348 | $84,042 | $80,455 |
| Income growth (%/yr) | 3.22% | 4.46% | 4.80% |
| Unemployment rate | 5.9% | 5.8% | 5.2% |
The median household income in Lake in the Hills is about 32% higher than in Illinois.
Housing
| Metric | Lake in the Hills | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median home price | $271,105 | $149,936 | $248,835 |
| Median rent | $1,637 | $1,274 | $1,407 |
| Homeownership rate | 80.6% | 67.1% | 65.2% |
The median home price in Lake in the Hills is about 13.8 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,637 per month for that long.
Commute Time & Mobility
Commuters in Lake in the Hills spend about 61 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 253 hours, about 10.5 full days, spent commuting.
| Metric | Lake in the Hills | Illinois Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 30.4 | 23.6 | 22.4 |
| Round-trip commute (min) | 60.7 | 47.3 | 44.8 |
| Yearly time spent (hours) | 253 | 197 | 187 |
| Estimated yearly cost | $7,846 | $6,104 | $5,790 |
| Work from home | 17.5% | 15.9% | 15.0% |
| Highway traffic (vehicles/day) | — | 7,977 | 8,813 |
| Local road traffic (vehicles/day) | 4,260 | 1,547 | 1,355 |
The average commute time in Lake in the Hills is 30 minutes, longer than the 24 minutes in Illinois.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Lake in the Hills has a education index of B, which means it is quite educated.
| Metric | Lake in the Hills | Illinois Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 34.7% | 34.1% | 31.6% |
| Average household size | 2.88 | 2.46 | 2.53 |
Health
Lake in the Hills has a health index of A, which means it is very healthy.
| Metric | Lake in the Hills | Illinois Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 79.7 | 77.9 | 78.3 |
| Self-rated poor health | 9.8% | 15.6% | 16.3% |
| Smokers | 15.6% | 19.2% | 19.0% |
Lake in the Hills, IL Compared With Nearby Cities
How Lake in the Hills, IL compares with the 2 cities closest to it.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Lake in the Hills, IL | 25,084 | $111,348 #2/3 | $271,105 #1/3 | 30.4 min #3/3 |
| Algonquin, IL | 28,443 | $127,830 | $187,499 | 30.2 min |
| Crystal Lake, IL | 37,884 | $106,177 | $254,750 | 23.1 min |
Frequently Asked Questions
Common questions about Lake in the Hills, Illinois.
What is the population of Lake in the Hills, Illinois?
About 25,084 people live in Lake in the Hills, Illinois, in 8,698 households of 2.9 people on average. The median age is 38.5, close to the U.S. median of 37.3.
How densely populated is Lake in the Hills, Illinois?
Averaged over its land area, Lake in the Hills, Illinois has 2,403 people per square mile, a density typical of urban and suburban areas. That is about 28 times the U.S. average of 86.
Can a typical household afford a home in Lake in the Hills, Illinois?
The median home costs 2.4 times the median household income ($271,105 against $111,348), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $1,637 a month takes about 18% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
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