Willowbrook, California Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Willowbrook, California is 21,642 as of the 2023 American Community Survey, making it the 337th-largest city in California. The median household income is $60,386, the median home value is $511,100, and the median age is 32.8.
21,642
Population
12905
People / sq mi
$60,386
Median Income
$511,100
Median Home Value
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Willowbrook covers 1.7 sq mi of land at 12905 people per square mile.
About Willowbrook, CA
What distinguishes Willowbrook is density: among the most densely settled of US cities, around 12,905 people per square mile. Willowbrook is a city in California with a population of 21,642.
Earnings trail the nation, with the median household making $60,386, below the US median of $78,538. The poverty rate is 15.5%, above the national 12.4%. A typical home is worth $511,100, with typical rent around $1,549.
College credentials are comparatively rare here: just 13.3%, below the national 35.0%. Around 8.7% of workers work from home, below the national 14.0%, and the average commute runs about 32 minutes each way.
That density explains much of the rest of the profile in Willowbrook: denser places lean toward renting, shorter commutes by transit, and a younger working-age mix.
Race & Ethnicity
| White | 19.2% |
| Black or African American | 18.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.1% |
| Two or More Races | 0.0% |
Economy & Income
$60,386
Median Household Income
$20,983
Per Capita Income
15.5%
Poverty Rate
8.1%
Unemployment Rate
Housing
$511,100
Median Home Value
$1,549
Median Rent
40.5%
Owner-Occupied
Education
60.6%
High School+
13.3%
Bachelor's+
Commute
3.1%
Drive Alone
70.5%
Public Transit
8.7%
Work From Home
32.1 min
Avg Commute
Community Profile
6.3%
Foreign Born
32.4%
Non-English at Home
0.9%
Veterans
12.1%
With Disability
86.8%
Health Insurance
95.1%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 20.2% |
| Finance, Insurance & Real Estate | 11.8% |
| Retail Trade | 11.7% |
| Education, Health Care & Social Services | 10.2% |
| Construction | 9.4% |
| Manufacturing | 8.8% |
| Arts, Entertainment & Food Services | 3.9% |
| Public Administration | 3.0% |
| Information | 2.7% |
| Transportation & Warehousing | 1.3% |
| Agriculture & Mining | 0.8% |
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Frequently Asked Questions
Willowbrook, California has a population of 21,642 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 337th-largest city in California.
The median household income in Willowbrook, California is $60,386, with 15.5% of residents living below the federal poverty level.
The median home value in Willowbrook, California is $511,100, with median monthly rent at $1,549 and a homeownership rate of 40.5%.
The median age in Willowbrook, California is 32.8 years. The population is 48.0% male and 52.0% female.
Willowbrook Cdp, CA Climate
Willowbrook Cdp, CA has an average annual temperature of 18.8°C (66°F) and receives about 365 mm of precipitation per year. The warmest month is August and the coldest is January. Figures are 1970–2000 climate normals.
18.8°C
Avg Temp
365
Precip (mm/yr)
Aug
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 14° / 58° | 79 mm |
| February | 15° / 59° | 82 mm |
| March | 16° / 60° | 70 mm |
| April | 18° / 64° | 23 mm |
| May | 19° / 66° | 5 mm |
| June | 21° / 70° | 2 mm |
| July | 23° / 74° | 1 mm |
| August | 24° / 75° | 3 mm |
| September | 23° / 74° | 6 mm |
| October | 21° / 69° | 10 mm |
| November | 17° / 63° | 36 mm |
| December | 14° / 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 Willowbrook Cdp, CA
The most comfortable months to visit Willowbrook Cdp, CA are typically June, October and May, 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). February is usually the wettest month.
Where to stay near Willowbrook
Visiting or relocating to Willowbrook, 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.