Brentwood, California Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Brentwood, CA Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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A
Health Above average
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A
Income Above average
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C
Education Below average
Source: Map AI Methodology
Population
| Metric | Brentwood | California Avg | U.S. Average |
|---|---|---|---|
| Population | 48,932 | 39,245,658 | 337,468,954 |
| Population density (per sq mi) | 3291.7 | 239.4 | 86.4 |
| Population growth (%/yr) | 3.17% | 0.19% | 0.59% |
| Median age | 38.7 | 35.5 | 37.3 |
| Households | 15,742 | 13,531,619 | 130,235,071 |
Population in Brentwood grew by 93.6% from 2009 to 2024, reaching 48,932 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Brentwood is Gen X, aged 45–60, at 22.7% of residents. That is 2.8 points above California as a whole.
- Gen Z 13–28 10,399 21.3% -0.5 pts
- Millennials 29–44 10,002 20.4% -3.2 pts
- Gen X 45–60 11,089 22.7% +2.8 pts
- Boomers 61–79 6,894 14.1% -1.2 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below California, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 51.1% of the people living in Brentwood and men 48.9%.
- Women 51.1% California 49.9%
- Men 48.9% California 50.1%
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Economy
Brentwood has a the economy index of A, which means it is very prosperous.
| Metric | Brentwood | California Avg | U.S. Average |
|---|---|---|---|
| Median household income | $139,065 | $99,161 | $80,455 |
| Income growth (%/yr) | 4.87% | 5.57% | 4.80% |
| Unemployment rate | 6.2% | 6.6% | 5.2% |
The median household income in Brentwood is about 40% higher than in California.
Housing
| Metric | Brentwood | California Avg | U.S. Average |
|---|---|---|---|
| Median home price | $599,374 | $650,794 | $248,835 |
| Median rent | $2,636 | $2,036 | $1,407 |
| Homeownership rate | 81.6% | 55.9% | 65.2% |
The median home price in Brentwood is about 18.9 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $2,636 per month for that long.
Commute Time & Mobility
Commuters in Brentwood spend about 71 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 295 hours, about 12.3 full days, spent commuting.
| Metric | Brentwood | California Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 35.4 | 23.5 | 22.4 |
| Round-trip commute (min) | 70.8 | 47.0 | 44.8 |
| Yearly time spent (hours) | 295 | 196 | 187 |
| Estimated yearly cost | $9,142 | $6,065 | $5,790 |
| Work from home | 17.2% | 17.2% | 15.0% |
| Highway traffic (vehicles/day) | 15,207 | 16,509 | 8,813 |
| Local road traffic (vehicles/day) | 4,742 | 2,449 | 1,355 |
The average commute time in Brentwood is 35 minutes, longer than the 23 minutes in California.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Brentwood has a education index of C, which means it is somewhat educated.
| Metric | Brentwood | California Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 33.0% | 33.0% | 31.6% |
| Average household size | 3.10 | 2.84 | 2.53 |
Health
Brentwood has a health index of A, which means it is very healthy.
| Metric | Brentwood | California Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 81.3 | 79.6 | 78.3 |
| Self-rated poor health | 12.4% | 16.4% | 16.3% |
| Smokers | 11.6% | 13.9% | 19.0% |
Brentwood, CA Compared With Nearby Cities
How Brentwood, CA compares with the 2 cities closest to it.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Brentwood, CA | 48,932 | $139,065 #1/3 | $599,374 #2/3 | 35.4 min #1/3 |
| Oakley, CA | 37,873 | $135,113 | $692,444 | 40.1 min |
| Antioch, CA | 105,266 | $96,783 | $507,441 | 36.8 min |
Frequently Asked Questions
Common questions about Brentwood, California.
How many people live in Brentwood, California?
About 48,932 people live in Brentwood, California, in 15,742 households of 3.1 people on average. The median age is 38.7, close to the U.S. median of 37.3.
Is Brentwood, California urban or rural?
Averaged over its land area, Brentwood, California has 3,292 people per square mile, a density typical of a city. That is about 38 times the U.S. average of 86.
How affordable is housing in Brentwood, California?
The median home costs 4.3 times the median household income ($599,374 against $139,065), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $2,636 a month takes about 23% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
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