New Lenox, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of New Lenox, Illinois is 27,456 as of the 2023 American Community Survey, making it the 76th-largest city in Illinois. The median household income is $133,071, the median home value is $377,500, and the median age is 37.3.
The population has grown 17.0% since 2010 (24,337 → 28,480).
27,456
Population
1709
People / sq mi
$133,071
Median Income
$377,500
Median Home Value
New Lenox covers 16.1 sq mi of land at 1709 people per square mile.
About New Lenox, IL
New Lenox is a city in Illinois with a population of 27,456. It ranks #76 among cities in Illinois by population. The median age is 37.3, younger than the national median. The population is 51.5% male and 48.5% female.
The median household income in New Lenox is $133,071, above the US median of $74,580. 1.7% of residents live below the federal poverty level. Home values sit at a median of $377,500, with monthly rent averaging $1,244. The homeownership rate of 91.2% is higher than the national rate of 64.8%.
Educational attainment in New Lenox reflects 45.5% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 14.2% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 32.8 minutes each way.
New Lenox village Population History (2010-2024)
The city of New Lenox village had a population of 24,337 in 2010 and 28,480 in 2024, a 17.0% growth over 14 years. The peak was 28,480 in 2024. Average annual growth rate: 1.13%.
28,480
Population (2024)
24,337
Population (2010)
28,480
Peak (2024)
1.13%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 24,337 |
| 2011 | 24,405 |
| 2012 | 24,586 |
| 2013 | 24,849 |
| 2014 | 25,288 |
| 2015 | 25,661 |
| 2016 | 26,082 |
| 2017 | 26,456 |
| 2018 | 26,727 |
| 2019 | 26,926 |
| 2020 | 27,243 |
| 2021 | 27,505 |
| 2022 | 27,633 |
| 2023 | 28,130 |
| 2024 | 28,480 |
Race & Ethnicity
| White | 91.2% |
| Black or African American | 0.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.6% |
| Two or More Races | 0.0% |
Economy & Income
$133,071
Median Household Income
$48,850
Per Capita Income
1.7%
Poverty Rate
2.1%
Unemployment Rate
Housing
$377,500
Median Home Value
$1,244
Median Rent
91.2%
Owner-Occupied
Education
98.3%
High School+
45.5%
Bachelor's+
Commute
3.5%
Drive Alone
75.7%
Public Transit
14.2%
Work From Home
32.8 min
Avg Commute
Community Profile
8.9%
Foreign Born
96.7%
Non-English at Home
4.5%
Veterans
5.6%
With Disability
98.2%
Health Insurance
98.1%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 26.1% |
| Finance, Insurance & Real Estate | 12.2% |
| Manufacturing | 10.1% |
| Information | 7.8% |
| Education, Health Care & Social Services | 7.4% |
| Construction | 6.9% |
| Retail Trade | 6.6% |
| Arts, Entertainment & Food Services | 4.7% |
| Public Administration | 3.7% |
| Transportation & Warehousing | 1.1% |
| Agriculture & Mining | 0.5% |
Largest cities in Illinois
Largest counties in Illinois
Part of Illinois
Metro areas in Illinois
City rankings
Frequently Asked Questions
New Lenox, Illinois has a population of 27,456 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 76th-largest city in Illinois.
The median household income in New Lenox, Illinois is $133,071, with 1.7% of residents living below the federal poverty level.
The median home value in New Lenox, Illinois is $377,500, with median monthly rent at $1,244 and a homeownership rate of 91.2%.
The median age in New Lenox, Illinois is 37.3 years. The population is 51.5% male and 48.5% female.
The population has grown 17.0% since 2010 (24,337 → 28,480).
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.