Westmont, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Westmont, Illinois is 24,201 as of the 2023 American Community Survey, making it the 94th-largest city in Illinois. The median household income is $83,622, the median home value is $369,100, and the median age is 42.5.
The population has declined 1.5% since 2010 (24,690 → 24,308).
24,201
Population
4808
People / sq mi
$83,622
Median Income
$369,100
Median Home Value
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Westmont covers 5.0 sq mi of land at 4808 people per square mile.
About Westmont, IL
Westmont stands apart on settlement density — it is among the most densely settled of US cities, at roughly 4,808 people per square mile. With 24,201 residents, Westmont is a city in Illinois.
Median household income is $83,622, above the US median of $78,538. About 7.2% of residents live below the federal poverty level, below the national 12.4%. Median home value is $369,100, with typical rent around $1,427.
Educational attainment is on the higher side for US cities — 49.3% of adults hold a four-year degree, above the national 35.0%. Remote work is on the higher side at 19.6%, above the national 14.0%, and the average commute runs about 25 minutes each way.
That density explains much of the rest of the profile in Westmont: denser places lean toward renting, shorter commutes by transit, and a younger working-age mix.
Westmont village Population History (2010-2024)
The city of Westmont village had a population of 24,690 in 2010 and 24,308 in 2024, a -1.5% growth over 14 years. The peak was 24,989 in 2014. Average annual growth rate: -0.11%.
24,308
Population (2024)
24,690
Population (2010)
24,989
Peak (2014)
-0.11%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 24,690 |
| 2011 | 24,817 |
| 2012 | 24,892 |
| 2013 | 24,981 |
| 2014 | 24,989 |
| 2015 | 24,970 |
| 2016 | 24,850 |
| 2017 | 24,768 |
| 2018 | 24,618 |
| 2019 | 24,443 |
| 2020 | 24,412 |
| 2021 | 24,232 |
| 2022 | 24,091 |
| 2023 | 24,141 |
| 2024 | 24,308 |
Race & Ethnicity
| White | 66.2% |
| Black or African American | 6.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.9% |
| Two or More Races | 0.0% |
Economy & Income
$83,622
Median Household Income
$54,524
Per Capita Income
7.2%
Poverty Rate
2.5%
Unemployment Rate
Housing
$369,100
Median Home Value
$1,427
Median Rent
54.9%
Owner-Occupied
Education
95.4%
High School+
49.3%
Bachelor's+
Commute
4.3%
Drive Alone
69.6%
Public Transit
19.6%
Work From Home
25.4 min
Avg Commute
Community Profile
14.7%
Foreign Born
69.4%
Non-English at Home
3.6%
Veterans
10.3%
With Disability
93.7%
Health Insurance
95.3%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 23.2% |
| Finance, Insurance & Real Estate | 17.8% |
| Education, Health Care & Social Services | 10.4% |
| Manufacturing | 8.6% |
| Information | 8.0% |
| Retail Trade | 7.3% |
| Construction | 4.3% |
| Arts, Entertainment & Food Services | 3.3% |
| Public Administration | 3.3% |
| Transportation & Warehousing | 2.4% |
| Agriculture & Mining | 0.5% |
Largest cities in Illinois
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City rankings
Frequently Asked Questions
Westmont, Illinois has a population of 24,201 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 94th-largest city in Illinois.
The median household income in Westmont, Illinois is $83,622, with 7.2% of residents living below the federal poverty level.
The median home value in Westmont, Illinois is $369,100, with median monthly rent at $1,427 and a homeownership rate of 54.9%.
The median age in Westmont, Illinois is 42.5 years. The population is 46.6% male and 53.4% female.
The population has declined 1.5% since 2010 (24,690 → 24,308).
Westmont village, IL Climate
Westmont village, IL has an average annual temperature of 9.8°C (50°F) and receives about 941 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
9.8°C
Avg Temp
941
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -6° / 22° | 42 mm |
| February | -3° / 27° | 39 mm |
| March | 3° / 38° | 67 mm |
| April | 9° / 49° | 96 mm |
| May | 16° / 60° | 94 mm |
| June | 21° / 70° | 103 mm |
| July | 23° / 74° | 96 mm |
| August | 22° / 72° | 103 mm |
| September | 18° / 65° | 91 mm |
| October | 12° / 53° | 69 mm |
| November | 4° / 40° | 78 mm |
| December | -2° / 28° | 63 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Westmont village, IL
The most comfortable months to visit Westmont village, IL are typically June, August and July, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 29°C high). The coldest is January (near -10°C low). June is usually the wettest month.
Where to stay near Westmont
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.