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COUNTY · 2010 ACS

San Mateo County

California · 718,451 residents · 449 sq mi
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The short version

San Mateo County is home to 718,451 people in California. The typical home is worth $784,800, having risen by half since 2000. The foreign-born share is 34%. This is an unusually credentialed place: 44% of adults have a four-year degree. That is roughly 41% ahead of the California median. The median household earns $85,648, about 63% above the national median.

At a glance
Wealthier
above the US median
US median: $52,703
Older
median age 39.3
US median: 37.2
More educated
44% hold a bachelor's degree
US average: 28%
Less affordable
home values up 38%, inflation adjusted
US median home: $225,659
Section 01

Population & growth

Total population
718,451
+2%since 2000
from 707,161 in 2000
1990 – 2025
Median age
39.3
+7%since 2000
from 36.8 in 2000
US average: 37.2
Land area
449 sq mi
Population, 1990 – 2024
638K673K709K744K779K19902000201020202024San Mateo County
2024742K
1990201020202024
Age distribution, 2010
Under 56.5%(46,360)
US avg: 6.5%
5 to 96.2%(44,729)
US avg: 6.6%
10 to 145.9%(42,463)
US avg: 6.7%
15 to 195.7%(41,249)
US avg: 7.1%
20 to 245.6%(40,098)
US avg: 7%
25 to 3413.8%(99,334)
US avg: 13.3%
35 to 4415%(108,100)
US avg: 13.3%
45 to 5415.4%(110,669)
US avg: 14.6%
55 to 6412.4%(89,187)
US avg: 11.8%
65 to 747%(49,985)
US avg: 7%
75 to 844.3%(30,973)
US avg: 4.2%
85 and over2.1%(15,304)
US avg: 1.8%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$85,648
−4%inflation adjusted, since 2000
from $70,819 in 2000
US average: $52,703
1990 – 2024
Per capita income
$43,958
+22%since 2000
from $36,045 in 2000
US average: $27,286
Households earning $100K+
56.3%
+0.9 ptssince 2009
from 55.5% in 2009
US average: 33.3%
Poverty rate
7.0%
+1.2 ptssince 2000
from 5.8% in 2000
US average: 13.8%
Income inequality (Gini)
0.467
US average: 0.461
Workforce by industry, 2010
Information10.3%
US avg: 11.5%
Other services8.7%
US avg: 7%
Retail trade7.8%
US avg: 10.9%
Finance & insurance5.9%
US avg: 5.1%
Public administration5.9%
US avg: 4.9%
Wholesale trade5.7%
US avg: 7.2%
Professional, scientific, technical5.2%
US avg: 4.2%
Arts, entertainment, food3.5%
US avg: 2.4%
Transportation & warehousing3.1%
US avg: 3.1%
Education & health services0.8%
US avg: 0.9%
Agriculture, forestry, fishing0.7%
US avg: 1.9%
Construction0.7%
US avg: 1.4%
Manufacturing0%
US avg: 0.5%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$784,800
+38%inflation adjusted, since 2000
from $449,900 in 2000
US average: $225,659
1990 – 2024
Median gross rent
$1,443
Unchangedinflation adjusted, since 2000
from $1,144 in 2000
US average: $853
Owner-occupied
59.4%
−2.1 ptssince 2000
from 61.4% in 2000
40.6% rent
Vacancy rate
5.3%
+0.1 ptssince 2009
from 5.2% in 2009
US average: 12.1%
Persons per household
2.72 people
−1%since 2009
from 2.74 people in 2009
US average: 2.60
Owner cost-burdened
41.8%
Unchangedsince 2009
from 41.8% in 2009
US average: 30.9%
Renter cost-burdened
45.3%
−0.2 ptssince 2009
from 45.4% in 2009
US average: 46.8%
Afford Score
9.2
−2%since 2009
from 9.3 in 2009
2009 – 2024
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Section 04

Race & ethnicity

2000
White, non-Hispanic49.8%(352,355)
Black3.4%(23,778)
Hispanic / Latino21.9%(154,708)
Asian19.8%(140,313)
Other0%
2010
White, non-Hispanic42.3%(303,609)
Black2.6%(18,763)
Hispanic / Latino25.4%(182,502)
Asian24.5%(175,934)
Other4.8%(34,554)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Mexican16%(112,535)
Salvadoran2.6%(18,215)
Nicaraguan1.3%(9,024)
South American1.2%(8,666)
Guatemalan0.9%(6,044)
Peruvian0.6%(4,389)
Puerto Rican0.6%(4,025)
Spaniard0.4%(2,820)
Cuban0.2%(1,297)
Colombian0.2%(1,088)
Chilean0.1%(878)
+ 10 more hispanic origin groups with data
Ecuadorian0.1%(696)
Honduran0.1%(643)
Argentine0.1%(595)
Bolivian0.1%(567)
Panamanian0%(346)
Venezuelan0%(196)
Dominican0%(88)
Uruguayan0%(30)
Ancestry
German9.1%(64,292)
Irish8.6%(60,636)
Italian6.9%(48,534)
English6.8%(48,076)
French2.4%(16,961)
Russian1.8%(12,572)
Scottish1.7%(12,051)
American1.6%(11,173)
Arab1.5%(10,806)
Polish1.5%(10,638)
Swedish1.4%(9,730)
Scotch-Irish1%(7,378)
+ 49 more ancestry groups with data
Norwegian1%(7,172)
Dutch1%(6,875)
Greek0.9%(6,042)
Portuguese0.8%(5,842)
Iranian0.7%(4,741)
Danish0.6%(4,510)
British0.6%(3,978)
Welsh0.5%(3,202)
Swiss0.4%(2,962)
Hungarian0.4%(2,813)
Armenian0.4%(2,791)
Ukrainian0.3%(2,376)
Austrian0.3%(2,140)
Czech0.3%(2,129)
Canadian0.3%(2,105)
Palestinian0.3%(2,063)
Lebanese0.3%(2,000)
Brazilian0.3%(1,880)
French Canadian0.2%(1,751)
Croatian0.2%(1,730)
Turkish0.2%(1,349)
Finnish0.2%(1,282)
Lithuanian0.2%(1,131)
Romanian0.1%(985)
Jordanian0.1%(945)
Egyptian0.1%(763)
West Indian0.1%(680)
Belgian0.1%(602)
Iraqi0.1%(567)
Australian0.1%(479)
Slovak0.1%(477)
Israeli0.1%(383)
Syrian0.1%(370)
Latvian0%(329)
Jamaican0%(325)
Nigerian0%(302)
Serbian0%(237)
Moroccan0%(214)
Bulgarian0%(194)
Slovene0%(187)
Ethiopian0%(149)
Haitian0%(120)
Kenyan0%(57)
Guyanese0%(48)
Ghanaian0%(22)
Barbadian0%(10)
Section 05

Education

Bachelor's degree or higher
44.0%
+5.0 ptssince 2000
from 39.0% in 2000
US average: 27.9%
High school or higher
88.5%
+3.3 ptssince 2000
from 85.3% in 2000
US average: 84.9%
Graduate degree
17.0%
+2.5 ptssince 2000
from 14.6% in 2000
US average: 10.2%
Section 06

Commute & transportation

Average commute
25.0 min
+35%since 2000
from 18.5 min in 2000
US average: 25.2
Drive alone to work
70.6%
−0.1 ptssince 2009
from 70.6% in 2009
US average: 76.2%
Carpooled to work
11.1%
−0.1 ptssince 2009
from 11.2% in 2009
US average: 10.4%
Public transit
8.4%
+0.1 ptssince 2009
from 8.2% in 2009
US average: 4.7%
Worked from home
4.9%
Unchangedsince 2009
from 4.9% in 2009
US average: 4.1%
Walked to work
2.8%
Unchangedsince 2009
from 2.8% in 2009
US average: 2.8%
Biked to work
1.1%
Unchangedsince 2009
from 1.1% in 2009
US average: 0.5%
No vehicle available
5.6%
Unchangedsince 2009
from 5.6% in 2009
US average: 8.7%
Section 07

Work & employment

Self-employed
12.2%
Unchangedsince 2009
from 12.2% in 2009
US average: 12.9%
Management & professional
43.2%
+0.5 ptssince 2009
from 42.7% in 2009
US average: 35.2%
Section 08

People & community

Male
49.1%
−0.5 ptssince 2009
from 49.7% in 2009
Female
50.9%
+0.5 ptssince 2009
from 50.3% in 2009
Foreign born
34.0%
+0.6 ptssince 2009
from 33.3% in 2009
US average: 12.8%
Veterans
6.6%
−0.3 ptssince 2009
from 6.9% in 2009
US average: 9.9%
Marital status (2024)
Men 15+
Never married37.5%(115,708)
Married54%(166,826)
Widowed2.3%(6,976)
Divorced6.3%(19,306)
Women 15+
Never married31.1%(97,841)
Married52.1%(163,880)
Widowed7.3%(22,999)
Divorced9.5%(29,908)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09

Health coverage

Showing 2024 (the nearest year with coverage data).

Uninsured
3.8%
−6.9 ptssince 2013
from 10.7% in 2013
US average: 8.4%
Employer-based
66.5%
−1.2 ptssince 2020
from 67.7% in 2020
US average: 54.8%
Direct-purchase
14.7%
−0.2 ptssince 2020
from 14.9% in 2020
US average: 13.8%
Medicare
17.3%
+1.4 ptssince 2020
from 15.9% in 2020
US average: 18.4%
Medicaid
15.9%
+1.6 ptssince 2020
from 14.3% in 2020
US average: 20.9%
VA health care
0.9%
−0.3 ptssince 2020
from 1.2% in 2020
US average: 2.2%
Any private
78.0%
−1.7 ptssince 2020
from 79.7% in 2020
US average: 67.1%
Any public
30.2%
+2.4 ptssince 2020
from 27.8% in 2020
US average: 36.7%

Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.

Section 09 · Service history

Veterans

Veterans by period of service, 2024
Gulf War (2001 or later)17.6%(3,060)
US avg: 26.4%
Gulf War (1990s)14.5%(2,523)
US avg: 24.3%
Vietnam era37.6%(6,539)
US avg: 33.1%
Korean War9.9%(1,722)
US avg: 4.5%
World War II2.1%(359)
US avg: 1%

Share of the 17,374 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.

BAR + DOT: THIS PLACE · TICK: US AVERAGE
Drill deeper

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Head to head

Compare San Mateo County to nearby counties

SAN MATEO COUNTY VS
Alameda County
Income$129,367+51%
Home value$1,090,100+39%
Population1,636,630+120%
SEE FULL COMPARISON →
SAN MATEO COUNTY VS
Santa Cruz County
Income$111,093+30%
Home value$1,027,500+31%
Population258,852−65%
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SAN MATEO COUNTY VS
Santa Clara County
Income$164,281+92%
Home value$1,490,600+90%
Population1,914,391+157%
SEE FULL COMPARISON →
SAN MATEO COUNTY VS
Contra Costa County
Income$127,229+49%
Home value$866,800+10%
Population1,170,070+57%
SEE FULL COMPARISON →
Frequently asked

How many people live in San Mateo County, California?

San Mateo County, California has about 718,451 residents according to the 2010 American Community Survey.

What is the median household income in San Mateo County, California?

The typical household in San Mateo County, California earns about $85,648 a year. Half of households make more than that, and half make less.

Is San Mateo County, California expensive?

In San Mateo County, California, the median home is worth about $784,800, and the typical rent is about $1,443 a month.

How educated are people in San Mateo County, California?

About 44.0% of adults age 25 and over in San Mateo County, California hold a bachelor's degree or higher.

What is the poverty rate in San Mateo County, California?

About 7.0% of people in San Mateo County, California live below the federal poverty line.

Has San Mateo County, California grown since 1990?

Yes, San Mateo County, California has grown since 1990. The population has added about 68,828 residents, a change of about 11 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →