Belmont, California Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Belmont, 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 Top grade
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A+
Income Top grade
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A+
Education Top grade
Source: Map AI Methodology
Population
| Metric | Belmont | California Avg | U.S. Average |
|---|---|---|---|
| Population | 24,586 | 39,245,658 | 337,468,954 |
| Population density (per sq mi) | 5300.2 | 239.4 | 86.4 |
| Population growth (%/yr) | 0.17% | 0.19% | 0.59% |
| Median age | 40.3 | 35.5 | 37.3 |
| Households | 9,339 | 13,531,619 | 130,235,071 |
Population in Belmont grew by 11.4% from 2009 to 2024, reaching 24,586 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Belmont is Millennials, aged 29–44, at 25.0% of residents. That is 1.3 points above California as a whole.
- Gen Z 13–28 4,083 16.6% -5.1 pts
- Millennials 29–44 6,145 25.0% +1.3 pts
- Gen X 45–60 5,886 23.9% +4.1 pts
- Boomers 61–79 3,570 14.5% -0.7 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 49.8% of the people living in Belmont and men 50.2%.
- Women 49.8% California 49.9%
- Men 50.2% California 50.1%
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100% of everyone living in Belmont
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Economy
Belmont has a the economy index of A+, which means it is exceptionally prosperous.
| Metric | Belmont | California Avg | U.S. Average |
|---|---|---|---|
| Median household income | $202,176 | $99,161 | $80,455 |
| Income growth (%/yr) | 6.58% | 5.57% | 4.80% |
| Unemployment rate | 6.9% | 6.6% | 5.2% |
The median household income in Belmont is about 104% higher than in California.
Housing
| Metric | Belmont | California Avg | U.S. Average |
|---|---|---|---|
| Median home price | $1,749,901 | $650,794 | $248,835 |
| Median rent | $2,870 | $2,036 | $1,407 |
| Homeownership rate | 58.1% | 55.9% | 65.2% |
The median home price in Belmont is about 50.8 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $2,870 per month for that long.
Commute Time & Mobility
Commuters in Belmont spend about 51 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 212 hours, about 8.8 full days, spent commuting.
| Metric | Belmont | California Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 25.4 | 23.5 | 22.4 |
| Round-trip commute (min) | 50.8 | 47.0 | 44.8 |
| Yearly time spent (hours) | 212 | 196 | 187 |
| Estimated yearly cost | $6,567 | $6,065 | $5,790 |
| Work from home | 33.5% | 17.2% | 15.0% |
| Highway traffic (vehicles/day) | 35,079 | 16,509 | 8,813 |
| Local road traffic (vehicles/day) | 3,721 | 2,449 | 1,355 |
The average commute time in Belmont is 25 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
Belmont has a education index of A+, which means it is exceptionally educated.
| Metric | Belmont | California Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 65.0% | 33.0% | 31.6% |
| Average household size | 2.55 | 2.84 | 2.53 |
Health
Belmont has a health index of A+, which means it is exceptionally healthy.
| Metric | Belmont | California Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 84.3 | 79.6 | 78.3 |
| Self-rated poor health | 8.8% | 16.4% | 16.3% |
| Smokers | 7.9% | 13.9% | 19.0% |
Belmont, CA Compared With Nearby Cities
How Belmont, CA compares with the 2 cities closest to it.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Belmont, CA | 24,586 | $202,176 #2/3 | $1,749,901 #1/3 | 25.4 min #3/3 |
| San Carlos, CA | 27,659 | $205,565 | $461,911 | 22.1 min |
| San Mateo, CA | 101,951 | $153,407 | $296,936 | 23.2 min |
Frequently Asked Questions
Common questions about Belmont, California.
How many people live in Belmont, California?
About 24,586 people live in Belmont, California, in 9,339 households of 2.6 people on average. The median age is 40.3, so residents are older than the U.S. median of 37.3 by about 3 years.
Is Belmont, California mostly urban or rural?
Averaged over its land area, Belmont, California has 5,300 people per square mile, a density typical of a city. That is about 61 times the U.S. average of 86.
Is Belmont, California an affordable place to live?
The median home costs 8.7 times the median household income ($1,749,901 against $202,176), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $2,870 a month takes about 17% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is it hard to find a job in Belmont, California?
Unemployment in Belmont, California is 6.9%, well above the U.S. rate of 5.2%, so job seekers may face more competition than elsewhere.
What share of adults in Belmont, California have a college degree?
65.0% of adults in Belmont, California hold a bachelor's degree or higher (about 7 in 10), well above the U.S. share of 31.6%.
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