New Lenox, Illinois Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
New Lenox, 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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A
Income Above average
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B
Education Around average
Source: Map AI Methodology
Population
| Metric | New Lenox | Illinois Avg | U.S. Average |
|---|---|---|---|
| Population | 20,795 | 12,692,444 | 337,468,954 |
| Population density (per sq mi) | 1292.0 | 219.1 | 86.4 |
| Population growth (%/yr) | 0.56% | -0.16% | 0.59% |
| Median age | 36.5 | 37.4 | 37.3 |
| Households | 7,140 | 5,035,584 | 130,235,071 |
Population in New Lenox grew by 22.5% from 2009 to 2024, reaching 20,795 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in New Lenox is Millennials, aged 29–44, at 22.2% of residents. That is 0.4 points above Illinois as a whole.
- Gen Z 13–28 4,123 19.8% -1.4 pts
- Millennials 29–44 4,626 22.2% +0.4 pts
- Gen X 45–60 4,556 21.9% +1.5 pts
- Boomers 61–79 2,868 13.8% -3.1 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 New Lenox and men 49.9%.
- Women 50.1% Illinois 50.6%
- Men 49.9% Illinois 49.4%
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Economy
New Lenox has a the economy index of A, which means it is very prosperous.
| Metric | New Lenox | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median household income | $130,579 | $84,042 | $80,455 |
| Income growth (%/yr) | 4.01% | 4.46% | 4.80% |
| Unemployment rate | 2.4% | 5.8% | 5.2% |
The median household income in New Lenox is about 55% higher than in Illinois.
Housing
| Metric | New Lenox | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median home price | $427,389 | $149,936 | $248,835 |
| Median rent | $1,455 | $1,274 | $1,407 |
| Homeownership rate | 92.3% | 67.1% | 65.2% |
The median home price in New Lenox is about 24.5 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,455 per month for that long.
Commute Time & Mobility
Commuters in New Lenox spend about 62 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 257 hours, about 10.7 full days, spent commuting.
| Metric | New Lenox | Illinois Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 30.8 | 23.6 | 22.4 |
| Round-trip commute (min) | 61.7 | 47.3 | 44.8 |
| Yearly time spent (hours) | 257 | 197 | 187 |
| Estimated yearly cost | $7,964 | $6,104 | $5,790 |
| Work from home | 13.2% | 15.9% | 15.0% |
| Highway traffic (vehicles/day) | 19,439 | 7,977 | 8,813 |
| Local road traffic (vehicles/day) | 3,532 | 1,547 | 1,355 |
The average commute time in New Lenox is 31 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
New Lenox has a education index of B, which means it is quite educated.
| Metric | New Lenox | Illinois Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 40.6% | 34.1% | 31.6% |
| Average household size | 2.90 | 2.46 | 2.53 |
Health
New Lenox has a health index of A, which means it is very healthy.
| Metric | New Lenox | Illinois Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 79.9 | 77.9 | 78.3 |
| Self-rated poor health | 9.3% | 15.6% | 16.3% |
| Smokers | 13.6% | 19.2% | 19.0% |
Frequently Asked Questions
Common questions about New Lenox, Illinois.
How many people live in New Lenox, Illinois?
About 20,795 people live in New Lenox, Illinois, in 7,140 households of 2.9 people on average. The median age is 36.5, close to the U.S. median of 37.3.
Is New Lenox, Illinois mostly urban or rural?
Averaged over its land area, New Lenox, Illinois has 1,292 people per square mile, a density typical of urban and suburban areas. That is about 15 times the U.S. average of 86.
How affordable is housing in New Lenox, Illinois?
The median home costs 3.3 times the median household income ($427,389 against $130,579), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $1,455 a month takes about 13% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is it hard to find a job in New Lenox, Illinois?
Unemployment in New Lenox, Illinois is only 2.4%, well below the U.S. rate of 5.2%, a sign of a tight labor market where employers compete for workers.
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