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CITY

Lemont

Illinois · 18,513 residents (2025 est.) · 8.471 sq mi
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The short version

Lemont is significantly wealthier than the US average, with a median household income of $123,370. Population has grown 36% since 2000. 47% of adults hold a bachelor's degree or higher. Median home value has more than doubled since 2000, reaching $468,800. Poverty is rare here, at 3.1% of residents. It ranks in the top 5% of US cities for household income.

At a glance
Wealthier
above the US median
US median: $82,259
Older
median age 43.7
US median: 38.9
More educated
47% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
17,820
+36%since 2000
from 13,098 in 2000
1990 – 2025
Population density
2,104 / sq mi
+14%since 2009
from 1,843 / sq mi in 2009
US average: 281
Median age
43.7
+14%since 2000
from 38.3 in 2000
US average: 38.9

PEP 2025 EST:18,513 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
6K9K13K16K19K1990201020202024Lemont
202418K
1990201020202024
Age distribution, 2024
Under 55.4%(968)
US avg: 5.6%
5 to 98.2%(1,453)
US avg: 6%
10 to 147.5%(1,345)
US avg: 6.4%
15 to 196%(1,073)
US avg: 6.6%
20 to 244%(720)
US avg: 6.5%
25 to 346.1%(1,088)
US avg: 13.7%
35 to 4415.3%(2,722)
US avg: 13.2%
45 to 5411.7%(2,089)
US avg: 12.2%
55 to 6414.9%(2,647)
US avg: 12.7%
65 to 7411.4%(2,029)
US avg: 10.2%
75 to 846.2%(1,112)
US avg: 5.1%
85 and over3.2%(574)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$123,370
−4%inflation adjusted, since 2000
from $70,563 in 2000
US average: $82,259
1990 – 2024
Per capita income
$54,818
+93%since 2000
from $28,354 in 2000
US average: $44,673
Households earning $100K+
70.5%
+12.2 ptssince 2009
from 58.3% in 2009
US average: 53.3%
Poverty rate
3.1%
−0.6 ptssince 2000
from 3.6% in 2000
US average: 12.5%
Income inequality (Gini)
0.393
−3%since 2010
from 0.404 in 2010
US average: 0.476
Workforce by industry, 2024
Information10.2%
US avg: 10.8%
Other services9.9%
US avg: 6.7%
Finance & insurance8.1%
US avg: 5.9%
Wholesale trade8.1%
US avg: 6.9%
Public administration7.3%
US avg: 4.8%
Professional, scientific, technical7%
US avg: 5.1%
Retail trade5.9%
US avg: 9.9%
Transportation & warehousing2.2%
US avg: 2.2%
Arts, entertainment, food1.3%
US avg: 1.9%
Education & health services1%
US avg: 0.9%
Agriculture, forestry, fishing0.3%
US avg: 1.6%
Construction0.3%
US avg: 1.2%
Manufacturing0%
US avg: 0.4%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$468,800
+14%inflation adjusted, since 2000
from $225,800 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$1,209
−12%inflation adjusted, since 2000
from $753 in 2000
US average: $1,442
Owner-occupied
87.6%
+4.8 ptssince 2000
from 82.8% in 2000
12.4% rent
Vacancy rate
3.5%
−3.3 ptssince 2009
from 6.8% in 2009
US average: 10.0%
Owner cost-burdened
19.5%
−7.8 ptssince 2009
from 27.3% in 2009
US average: 22.9%
Renter cost-burdened
43.0%
−2.6 ptssince 2009
from 45.6% in 2009
US average: 47.4%
Afford Score
3.8
−10%since 2009
from 4.2 in 2009
2009 – 2024
Our index: median home value divided by median household income. Lower is more affordable.
Gentrification Score
39
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
RELATED:See current rent listings in Lemont on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic95.2%(12,469)
Black0.3%(39)
Hispanic / Latino3%(393)
Asian0.8%(107)
Other0%
2024
White, non-Hispanic84.6%(15,068)
Black1.7%(296)
Hispanic / Latino8.9%(1,579)
Asian2.8%(502)
Other2.1%(375)
Diversity Score
34
+117%since 2009
from 16 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Mexican7.9%(1,416)
Puerto Rican0.5%(95)
Colombian0.2%(44)
Asian origin
Asian Indian1.7%(299)
Chinese0.4%(73)
Filipino0.3%(52)
Thai0.2%(36)
Pakistani0.1%(26)
Korean0.1%(16)
Ancestry
Polish22.9%(4,086)
German14.7%(2,623)
Irish14.3%(2,547)
Lithuanian10.5%(1,866)
Italian9.7%(1,731)
English4.9%(881)
Czech2.8%(502)
American2.2%(386)
French1.9%(339)
Greek1.7%(309)
Swedish1.7%(301)
Russian1.2%(209)
+ 24 more ancestry groups with data
Norwegian0.9%(167)
Arab0.8%(144)
Lebanese0.7%(128)
Dutch0.7%(125)
Hungarian0.7%(120)
Ukrainian0.7%(120)
Slovak0.6%(100)
Scotch-Irish0.5%(97)
Welsh0.5%(89)
Swiss0.4%(79)
Macedonian0.4%(75)
British0.3%(58)
Romanian0.3%(56)
Austrian0.3%(54)
Armenian0.3%(52)
West Indian0.2%(43)
Jamaican0.2%(43)
Scottish0.2%(42)
Serbian0.2%(42)
Croatian0.2%(29)
Iranian0.2%(27)
Latvian0.2%(27)
Slovene0%(5)
RANKED:Largest Polish population · Largest German population · Largest Irish population · Largest Lithuanian population · Largest Italian population
Section 05

Education

Bachelor's degree or higher
46.9%
+14.9 ptssince 2000
from 32.0% in 2000
US average: 35.6%
High school or higher
95.7%
+9.2 ptssince 2000
from 86.5% in 2000
US average: 89.6%
Graduate degree
19.6%
+8.7 ptssince 2000
from 10.9% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
34.8 min
+34%since 2000
from 26.0 min in 2000
US average: 26.5
Drive alone to work
71.6%
−12.4 ptssince 2009
from 84.1% in 2009
US average: 68.9%
Carpooled to work
3.5%
−3.7 ptssince 2009
from 7.2% in 2009
US average: 8.5%
Public transit
3.2%
−0.2 ptssince 2009
from 3.4% in 2009
US average: 3.2%
Worked from home
17.1%
+14.3 ptssince 2009
from 2.8% in 2009
US average: 15.0%
Walked to work
3.9%
+2.2 ptssince 2009
from 1.7% in 2009
US average: 2.4%
Biked to work
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 0.4%
No vehicle available
3.2%
−1.8 ptssince 2009
from 5.0% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
4.5%
−5.1 ptssince 2011
from 9.7% in 2011
US average: 5.2%
Labor force participation
62.9%
−5.5 ptssince 2011
from 68.4% in 2011
US average: 63.5%
Self-employed
16.6%
+5.8 ptssince 2009
from 10.8% in 2009
US average: 13.1%
Management & professional
50.5%
−16.8 ptssince 2009
from 67.2% in 2009
US average: 42.5%
Section 08

People & community

Male
50.3%
+3.3 ptssince 2009
from 47.0% in 2009
Female
49.7%
−3.3 ptssince 2009
from 53.0% in 2009
Foreign born
17.8%
+8.1 ptssince 2009
from 9.6% in 2009
US average: 14.1%
Veterans
4.9%
−43.2 ptssince 2009
from 48.1% in 2009
US average: 6.2%
With a disability
9.2%
+0.9 ptssince 2012
from 8.3% in 2012
US average: 13.3%
Uninsured
1.8%
−92.9 ptssince 2013
from 94.7% in 2013
US average: 8.4%
Broadband at home
92.4%
+8.5 ptssince 2017
from 83.9% in 2017
US average: 91.0%
English only at home
71.2%
−7.4 ptssince 2016
from 78.6% in 2016
US average: 77.7%
Spanish at home
2.5%
−0.4 ptssince 2016
from 2.9% in 2016
US average: 13.6%
Marital status
Men 15+
Never married23%(1,554)
Married65.5%(4,430)
Widowed2.7%(184)
Divorced8.8%(594)
Women 15+
Never married22.5%(1,641)
Married59.7%(4,350)
Widowed9.9%(721)
Divorced8%(580)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
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Frequently asked

How many people live in Lemont, Illinois?

Lemont, Illinois has about 17,820 residents according to the 2024 American Community Survey.

What is the median household income in Lemont, Illinois?

The typical household in Lemont, Illinois earns about $123,370 a year. Half of households make more than that, and half make less.

Is Lemont, Illinois expensive?

In Lemont, Illinois, the median home is worth about $468,800, and the typical rent is about $1,209 a month.

How educated are people in Lemont, Illinois?

About 46.9% of adults age 25 and over in Lemont, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Lemont, Illinois?

About 3.1% of people in Lemont, Illinois live below the federal poverty line.

Has Lemont, Illinois grown since 1990?

Yes, Lemont, Illinois has grown since 1990. The population has added about 10,472 residents, a change of about 143 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →

Lemont, Illinois: demographics, income & housing data · CensusEasy