Westmont, California Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Westmont, California is 34,291 as of the 2023 American Community Survey, making it the 243rd-largest city in California. The median household income is $47,899, the median home value is $617,300, and the median age is 32.9.
34,291
Population
18566
People / sq mi
$47,899
Median Income
$617,300
Median Home Value
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Westmont covers 1.8 sq mi of land at 18566 people per square mile.
About Westmont, CA
Westmont stands apart on settlement density — it is among the most densely settled of US cities, at roughly 18,566 people per square mile. With 34,291 residents, Westmont is a city in California.
Money is tight relative to the rest of US cities: the median household earns just $47,899, below the US median of $78,538. The poverty rate, 23.1%, is among the steepest of comparable US cities and above the national 12.4%. The median home value is $617,300, with typical rent around $1,413.
Westmont is among the least college-educated US cities, at 12.7% — below the national 35.0%. Most workers commute: only 7.1% work from home, below the national 14.0%, and the average commute runs about 34 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.
Race & Ethnicity
| White | 12.1% |
| Black or African American | 35.4% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.6% |
| Two or More Races | 0.0% |
Economy & Income
$47,899
Median Household Income
$22,544
Per Capita Income
23.1%
Poverty Rate
7.0%
Unemployment Rate
Housing
$617,300
Median Home Value
$1,413
Median Rent
28.3%
Owner-Occupied
Education
70.9%
High School+
12.7%
Bachelor's+
Commute
8.4%
Drive Alone
66.9%
Public Transit
7.1%
Work From Home
34.2 min
Avg Commute
Community Profile
10.3%
Foreign Born
44.8%
Non-English at Home
3.4%
Veterans
15.7%
With Disability
86.5%
Health Insurance
94.1%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 20.8% |
| Finance, Insurance & Real Estate | 11.6% |
| Education, Health Care & Social Services | 10.9% |
| Retail Trade | 9.8% |
| Construction | 9.5% |
| Manufacturing | 7.5% |
| Public Administration | 5.9% |
| Arts, Entertainment & Food Services | 4.6% |
| Information | 2.2% |
| Agriculture & Mining | 1.0% |
| Transportation & Warehousing | 0.4% |
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Frequently Asked Questions
Westmont, California has a population of 34,291 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 243rd-largest city in California.
The median household income in Westmont, California is $47,899, with 23.1% of residents living below the federal poverty level.
The median home value in Westmont, California is $617,300, with median monthly rent at $1,413 and a homeownership rate of 28.3%.
The median age in Westmont, California is 32.9 years. The population is 47.3% male and 52.7% female.
Westmont Cdp, CA Climate
Westmont Cdp, CA has an average annual temperature of 18.6°C (65°F) and receives about 354 mm of precipitation per year. The warmest month is August and the coldest is January. Figures are 1970–2000 climate normals.
18.6°C
Avg Temp
354
Precip (mm/yr)
Aug
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 14° / 58° | 78 mm |
| February | 15° / 59° | 78 mm |
| March | 16° / 60° | 65 mm |
| April | 17° / 63° | 23 mm |
| May | 19° / 66° | 4 mm |
| June | 21° / 70° | 2 mm |
| July | 23° / 73° | 1 mm |
| August | 24° / 74° | 2 mm |
| September | 23° / 73° | 6 mm |
| October | 21° / 69° | 9 mm |
| November | 17° / 63° | 38 mm |
| December | 15° / 58° | 48 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 Cdp, CA
The most comfortable months to visit Westmont Cdp, CA are typically June, October and July, when temperatures are mildest and rainfall is relatively low. The hottest month is August (around 30°C high). The coldest is January (near 8°C low). January is usually the wettest month.
Where to stay near Westmont
Visiting or relocating to Westmont, CA? Compare hotels and short-term rentals across the metro — live availability and prices.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.