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San Mateo, CA

City in San Mateo County, California. ZIP codes: 94401, 94402, 94403, 94404.

Population

103,105

Land area

12.1sq mi

People per sq mi

8,497

ZIP codes

4

San Mateo and its ZIP codes

Full map

San Mateo at a glance

  • San Mateo is about 34 times as dense as California as a whole.
  • It is the 72nd most populous of 1,570 cities and towns in California.
  • Households here earn a median of $153,504 a year, 55% more than the California figure of $99,122.
  • A typical owner-occupied home is valued at $1,618,700 (about 2.2 times the California figure) and median rent is $3,077 a month.

Local data for San Mateo, CA

Counts from official public data

Housing and community stats

San Mateo, CA, American Community Survey 2020-2024

Full profile

Median household income

$153,504

Poverty rate

8.2%

Median home value

$1,618,700

Median rent

$3,077/mo

Homeownership

49.9%

Bachelor's or higher

57.8%

Median age

38.3

Average commute

26.1 min

Largest reported origins and ancestries: Mexican Americans (13,396), Chinese Americans (12,937), Irish Americans (7,294).

Home values and rentsIncome, education and commute

Economy and federal money

Jobs, pay, income and spending are for San Mateo County. PPP loans are for San Mateo.

Details

Unemployment rate

3.9%

Sep 2026, -0.2 pts in a year

Average annual pay

$214,295

411,346 jobs, 2025

Income per person

$179,656

BEA, 2024

Federal spending

$5.1B

FY 2026, $6,619 per person

PPP loans

$260M

2,693 loans, 24,868 jobs reported

San Mateo County economyFederal spendingPPP loans

How people get to work

San Mateo, CA, workers 16 and older. American Community Survey 5-year estimates

  • Drove alone57.7%
  • Carpooled7.0%
  • Public transit4.9%
  • Walked2.7%
  • Bicycle0.5%
  • Taxi, ride-hailing, motorcycle or other2.5%
  • Worked from home24.8%

Average one-way commute: 26.1 minutes for people who do not work from home.

Environment and hazard risk

San Mateo, CA, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively High

Top: earthquake

Storm events since 1996

690

Countywide, mostly strong wind

Flood insurance policies

3,346

1.8% of homes, county

July high / Jan low

73° / 45°F

19.6 inches of rain a year

Hazards, floods and storm historyCheck a flood zone6 historic places

Health statistics

Share of adults in San Mateo, CA, CDC PLACES estimates

All 40 measures

Obesity

23.0%

U.S. 33.3% -10.3 pts

Diabetes

9.4%

U.S. 12.1% -2.7 pts

Smoking

8.3%

U.S. 12.8% -4.5 pts

Uninsured (18-64)

7.3%

U.S. 11.1% -3.8 pts

ZIP codes in San Mateo

4 in or overlapping San Mateo. Population shown

·

Cities near San Mateo

NameDistanceLand area (sq mi)
Baywood ParkCensus-designated place2.3 mi0.5
HillsboroughTown2.6 mi6.2
Foster CityCity2.6 mi3.8
BelmontCity2.6 mi4.6
HighlandsCensus-designated place3 mi1.3
BurlingameCity3.8 mi4.4
San CarlosCity4.7 mi5.4
MillbraeCity6 mi3.3
Emerald Lake HillsCensus-designated place6.5 mi1.2
Redwood CityCity6.9 mi19.3
North Fair OaksCensus-designated place8 mi1.2
San BrunoCity8.2 mi5.5
South San FranciscoCity8.8 mi9.2
Half Moon BayCity8.8 mi6.2
El GranadaCensus-designated place8.9 mi4.9
AthertonTown9.1 mi5

Frequently asked questions

What county is San Mateo, CA in?
San Mateo is in San Mateo County, California.
What ZIP codes are in San Mateo, CA?
ZIP codes in or overlapping San Mateo include 94401, 94402, 94403, 94404.
What is the population of San Mateo, CA?
About 103,105 people live in San Mateo, based on American Community Survey 5-year estimates.
What cities are near San Mateo?
Nearby places include Baywood Park (2.3 mi), Hillsborough (2.6 mi), Foster City (2.6 mi), Belmont (2.6 mi), Highlands (3 mi).

Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023

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