Belmont, San Mateo County, CA demographics:
population, income, and more

Total population
27,337
-0.6% year-over-year change
Median household income
$205,297/yr
-1.1% year-over-year change
Housing units
11,346
1.1% year-over-year change

Belmont population

How many people live in Belmont

Belmont is home to 27,337 residents, according to the most recent Census data. Gender-wise, 50% of Belmont locals are male, and 50% are female.

Total population
27,337
-0.6% year-over-year change
Gender ratio
Male
50%
13,683
Female
50%
13,654
Value Percent YoY change
Male 13,683 50% 1.0%
Female 13,654 50% -2.2%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Belmont is 40, with the population distributed as follows: about 17.8% are children under 15, then 11.8% are in the 15 to 24 age group. Adults between 25 and 44 make up 29.2% of the population, while another 27.3% fall into the 45 to 64 bracket. Finally, around 14% are 65 or older.

Median age
39.8
Age breakdown
Under 15
17.8%
15 to 24
11.8%
25 to 44
29.2%
45 to 64
27.3%
Over 65
14%
Value Percent YoY change
Under 15 4,855 17.8% -2.3%
15 to 24 3,237 11.8% 13.0%
25 to 44 7,969 29.2% -2.0%
45 to 64 7,463 27.3% -3.3%
Over 65 3,813 14% -0.0%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Belmont, 67.9% of the population are US-born citizens, while 19% have gained naturalized citizenship. At the same time, 13.1% of residents are non-citizens. As for race, 48.6% of locals are Caucasian, 2.7% are African American and 30.8% have Asian roots. Another 0.5% are Indigenous American, 0.5% are Pacific Islanders, while 5.9% identify as another race. There’s also a share of 11.1% that includes residents with two or more races.

Citizenship
U.S.-born citizens
67.9%
Non-U.S.-born citizens
19%
Non-citizens
13.1%
Value Percent YoY change
U.S.-born citizens 18,558 67.9% -0.1%
Non-U.S.-born citizens 5,199 19% -3.8%
Non-citizens 3,580 13.1% 1.5%
Racial breakdown
White
48.6%
Black or African American
2.7%
American Indian and Alaska Native
0.5%
Asian
30.8%
Native Hawaiian and other Pacific Islander
0.5%
Two or more races
11.1%
Other
5.9%
Value Percent
White 13,287 48.6%
Black or African American 728 2.7%
American Indian and Alaska Native 132 0.5%
Asian 8,406 30.8%
Native Hawaiian and other Pacific Islander 132 0.5%
Two or more races 3,032 11.1%
Other 1,620 5.9%

Households in Belmont

A peek inside Belmont households

Belmont has 10,500 households, with an average of 3 members in each. Of these, 66.6% are families, while the remaining 33.4% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
10,500
-0.3% year-over-year change
Average people per household
3
Non-family households
3,506
Family households
6,994
Value Percent YoY change
Non-family households 3,506 33.4% 8.6%
Family households 6,994 66.6% -4.2%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Belmont

The housing landscape of Belmont

Belmont's housing consists of 11,346 units, with 54.3% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 4.6% and offer a more compact, shared living style.

Housing units
11,346
1.1% year-over-year change
Housing types
Value Percent
1 unit, detached 6,159 54.3%
1 unit, attached 522 4.6%
2 units 196 1.7%
3 or 4 units 118 1%
5 to 9 units 717 6.3%
10 to 19 units 1,308 11.5%
20 to 49 units 1,350 11.9%
50 or more units 976 8.6%
Homes built since 2020
82
% year-over-year change

The age of buildings in Belmont

In Belmont, the median construction year is 1966. About 3.5% of homes were built before the 1940s, with another 8.8% going up by 1949. Most development happened in the second half of the 20th century. Then, 2.9% of homes were added from 2000 to 2009, 2.8% between 2010 and 2019, and 0.7% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 401 3.5% 19.0%
Built between 1940 and 1949 998 8.8% 24.1%
Built between 1950 and 1959 2,547 22.4% 1.7%
Built between 1960 and 1969 2,819 24.8% -13.5%
Built between 1970 and 1979 2,658 23.4% 10.5%
Built between 1980 and 1989 543 4.8% -6.9%
Built between 1990 and 1999 654 5.8% 6.3%
Built between 2000 and 2009 331 2.9% -21.0%
Built between 2010 and 2019 313 2.8% 4.3%
Built in 2020 or later 82 0.7% N/A
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Belmont occupancy rates

Out of the 10,500 occupied housing units in Belmont, 54.8% are owner-occupied, while 45.2% are lived in by tenants. Meanwhile, 7.5% of all homes on the local market sit vacant.

Occupied housing units
10,500
-0.3% year-over-year change
Occupancy breakdown
Renter occupied
4,741
Owner occupied
5,759
Value Percent YoY
change
Renter occupied 4,741 45.2% 2.3%
Owner occupied 5,759 54.8% -2.3%
Unoccupied housing units
7.5%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Belmont housing costs

Housing costs in Belmont come to a median of $3,276 per month, while tenants specifically pay a median gross rent of $2,875.

Median housing costs per month
$3,276/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Belmont
$2,875/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Belmont

Belmont education at a glance

About 11.6% of the population in Belmont went to high school, while 13.4% pursued college studies. Another 6.8% earned an associate degree and 33.3% hold a bachelor’s. Meanwhile, 32.1% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 580 2.8% 9.2%
High school diploma 2,410 11.6% 4.0%
College diploma 2,806 13.4% -7.6%
Associate degree 1,412 6.8% -5.5%
Bachelor's degree 6,957 33.3% -1.0%
Graduate degree 6,706 32.1% 0.7%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Belmont

How much people earn in Belmont

The average annual household income in Belmont was $264,438 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +2.4% change from the previous year. At the same time, the median income stood at $205,297, reflecting a -1.1% shift over the same period.

Average household income in Belmont
$264,438/year
2.4% year-over-year change
Median household income in Belmont
$205,297/year
-1.1% year-over-year change

Belmont income by age

In Belmont, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $232,572. Those with someone between 45 and 64 in charge, often well established professionally, earn $239,792 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $114,708, while those led by someone over 65, many of whom may be retired, have about $104,783 in earnings. Overall, 93% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $114,708 3.2%
25 - 44 $232,572 2.8%
45 - 64 $239,792 0.2%
Over 65 $104,783 -0.6%
Above poverty level
24,539
Below poverty level
1,861
Value Percent YoY
change
Above poverty level 24,539 93% -1.4%
Below poverty level 1,861 7% 6.5%

Average renter income in Belmont

To get a better sense of what renters earn on average in Belmont, their median household income was $119,644 according to 2022 Census data. In addition, the rent-to-income ratio in the area, at 28.8%, shows what portion of their earnings goes toward housing expenses.

Renter median household income
$119,644
Rent-to-income ratio
28.8%
Understanding the rent-to-income ratio can help renters gauge if local housing costs align with their earnings. A ratio under 30% usually signals affordability, while exceeding this mark means rent is taking a larger-than-recommended bite out of income. That could make it harder for you to cover other costs like transportation, healthcare, or child care.

Employment in Belmont

Workforce and job types in Belmont

The job market in Belmont is powered by 13,953 working residents, spread across a range of industries and roles. 92.7% of the working population are employed in professional or administrative positions, while 7.3% are in hands-on or service-based jobs. Also, 8.1% run their own businesses, 75.1% are employed by private companies, and 9.3% work in the public sector.

Workforce demographics

Working population
13,953
-2.5% year-over-year change
White collar
12,929
Blue collar
1,024
Value Percent YoY change
White collar 12,929 92.7% -3.1%
Blue collar 1,024 7.3% 6.8%
Employer type
Self employees
8.1%
Private companies
75.1%
Governmental workers
9.3%
Not for profit companies
7.5%
Value Percent YoY change
Self employees 1,132 8.1% -9.9%
Private companies 10,482 75.1% -1.6%
Governmental workers 1,294 9.3% -6.2%
Not for profit companies 1,045 7.5% 2.5%
Unemployment rate
7.2%
5.7% year-over-year change

Available workforce

The unemployment rate in Belmont stands at 7.2%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Belmont

How people get around in Belmont

In Belmont, the average commute time is 28 minutes. Commuting methods vary: 58.2% of residents travel by personal vehicle and 2% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
28 min
-3.4% year-over-year change
Means of transportation
Value Percent YoY change
Car 7,991 58.2% -6.0%
Bus or trolleybus 121 0.9% 95.2%
Subway or elevated 247 1.8% N/A
Railroad 270 2% 31.7%
Motorcycle 3 0% -93.9%
Bicycle 68 0.5% -10.5%
Walk 274 2% -20.1%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Belmont by zipcode?

Zipcode Population Number of households Median income Average income
94002 27,534 10,567 $203,965 $263,095

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FAQs about Belmont demographics 

What is the total population of Belmont?

Belmont has a total population of 27,337 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by -0.6% compared to a year ago.

What is the gender ratio in Belmont?

The gender ratio in Belmont is as follows:
  • 50% males (13,683 residents)
  • 50% females (13,654 residents)

What is the median age in Belmont?

The median age in Belmont is 39.8.

What is the age distribution of the population in Belmont?

The age distribution in Belmont is as follows:
  • Under 15: 17.8% (4,855 residents)
  • Ages 15-24: 11.8% (3,237 residents)
  • Ages 25-44: 29.2% (7,969 residents)
  • Ages 45-64: 27.3% (7,463 residents)
  • Over 65: 14% (3,813 residents)

What is the racial and ethnic makeup of Belmont?

The racial and ethnic makeup of Belmont is as follows:
  • White: 48.6% (13,287 residents)
  • Black or African American: 2.7% (728 residents)
  • American Indian and Alaska Native: 0.5% (132 residents)
  • Asian: 30.8% (8,406 residents)
  • Native Hawaiian and Other Pacific Islander: 0.5% (132 residents)
  • Two or More Races: 11.1% (3,032 residents)
  • Other: 5.9% (1,620 residents)

What percentage of the population in Belmont are U.S.-born citizens?

U.S.-born citizens represent 67.9% of the population in Belmont.

How many housing units are there in Belmont?

There are 11,346 housing units in Belmont, reflecting a +1.1% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Belmont and what is the average household size?

Belmont has a total of 10,500 households, with an average of 3 people in each.

What is the median household income in Belmont?

Belmont has a median household income of $205,297, representing a -1.1% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Belmont?

The employment rate is 92.8% in Belmont, with a workforce of 13,953 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 92.7% (12,929 residents)
  • Blue-collar workers: 7.3% (1,024 residents)

Places of employment:
  • Self-employed: 8.1% (1,132 residents)
  • Private companies: 75.1% (10,482 residents)
  • Governmental workers: 9.3% (1,294 residents)
  • Not-for-profit companies: 7.5% (1,045 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025