94402 ZIP Code — San Mateo, CA

San Mateo County, California

ZIP code 94402 is located in San Mateo, California, within San Mateo County. It covers approximately 5.05 square miles and serves a population of 26,150 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 650.

About ZIP code 94402

The housing stock consists of a mix of housing types. Most homes were built in the 1950s, giving the area an established character. Median home value is $2,000,000. Owner-occupancy sits near the national average at 63%.

The gap between median ($184,453) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 6% is below the national average.

The dominant occupation class is management, business, and professional, with professional and management as the leading industry. The average commute of 29 minutes is near the national average. Remote work is prevalent — 27% of workers work from home.

Educational attainment is high — 69% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 94402 reflects a community defined by a highly educated population and a high rate of remote workers.

26,150

population

5.05

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

94402 ZIP code map

Cities in ZIP code 94402

Below are the cities the US Postal Service accepts for ZIP code 94402. Using any city not on this list may result in mail delivery delays.

City	Status
San Mateo	Preferred

Nearby ZIP codes

94403 San Mateo (1.4 mi) 94497 San Mateo (1.6 mi) 94401 San Mateo (2.4 mi) 94002 Belmont (2.6 mi) 94010 Burlingame (2.9 mi) 94404 San Mateo (3.5 mi) 94065 Redwood City (4.5 mi) 94070 San Carlos (4.6 mi) 94030 Millbrae (5.7 mi) 94128 San Francisco (6.3 mi) 94019 Half Moon Bay (6.4 mi) 94061 Redwood City (7.2 mi)

Demographics updated 06/2026

Population
Total population	26,150
Population density	5,178 / sq mi
State FIPS	06
County FIPS	081

Geography
Land area	5.05 sq mi
Water area	0.00 sq mi
Latitude	37.5398
Longitude	-122.3297
Timezone	Pacific (PT)
Area code	650

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	16.3%	18.4%	32.6%
$50k – $100k	14.1%	20.5%	27.7%
$100k – $200k	28.2%	30.5%	26.4%
Over $200k	41.4%	30.6%	13.3%

Demographics & statistics

26,150

Population

5,178

People per sq mi

41.5

Median age

$184,453

Median household income

$102,369

Per capita income

$2,000,000

Median home value

$3,315

Median monthly rent

63.1%

Home ownership

5.6%

Poverty rate

4.2%

Unemployment

6,970

Housing units

69.1%

Bachelor's or higher

Age distribution

Male Female

713

Under 5

821

702

5–9

809

819

10–14

943

677

15–19

781

535

20–24

617

1,571

25–34

1,809

1,582

35–44

1,822

1,685

45–54

1,941

748

55–59

862

811

60–64

935

1,186

65–74

1,367

772

75–84

889

350

85+

403

← Male

Female →

Age summary

Group	Count	%
Under 18	5,849	22.4%
18 and over	20,301	77.6%
65 and over	4,967	19.0%
Median age	41.5 years

Race & ethnicity

White 51.9%

Asian 24%

Two or more races 8.8%

Hispanic or Latino 7.9%

Other race 5.2%

Black or African American 1.3%

Native Hawaiian / Pacific Islander 0.8%

American Indian / Alaska Native 0.1%

Group	Count	%
White	14,727	51.9%
Asian	6,819	24%
Two or more races	2,491	8.8%
Hispanic or Latino	2,246	7.9%
Other race	1,482	5.2%
Black or African American	378	1.3%
Native Hawaiian / Pacific Islander	222	0.8%
American Indian / Alaska Native	31	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	16.3%	18.4%	32.6%
$50k – $100k	14.1%	20.5%	27.7%
$100k – $200k	28.2%	30.5%	26.4%
Over $200k	41.4%	30.6%	13.3%

Under $10k 2.5%

$10k–$15k 1.3%

$15k–$25k 1.3%

$25k–$35k 2.4%

$35k–$50k 4.8%

$50k–$75k 8.5%

$75k–$100k 7.8%

$100k–$150k 15.4%

$150k–$200k 9.3%

$200k+ 46.7%

Range	% of households
Under $10k	2.5%
$10k–$15k	1.3%
$15k–$25k	1.3%
$25k–$35k	2.4%
$35k–$50k	4.8%
$50k–$75k	8.5%
$75k–$100k	7.8%
$100k–$150k	15.4%
$150k–$200k	9.3%
$200k+	46.7%
Median income	$184,453

Housing

Home values

Under $50k 0.6%

$50k–$100k 0.9%

$100k–$150k 0.3%

$150k–$200k 0.3%

$200k–$300k 0.7%

$300k–$500k 1.4%

$500k–$1M 3.9%

$1M+ 91.9%

Housing overview

Metric	Value
Median home value	$2,000,000
Median rent / month	$3,315
Owner occupied	63.1%
Renter occupied	36.9%
Vacant	5.8%
Single-family detached	61.1%
Large apartment buildings	16.4%
Mobile homes	0.0%
Median rooms	5.8
Avg household size (owned)	2.73

Year built

Era	%
2020 or later	1.0%
2010–2019	4.4%
2000–2009	3.4%
1990–1999	5.8%
1980–1989	5.1%
1970–1979	12.2%
1960–1969	13.0%
1950–1959	20.0%
1940–1949	15.1%
1939 or earlier	20.0%

Bedrooms

Size	% of units
No bedroom (studio)	5.1%
1 bedroom	10.6%
2 bedrooms	24.6%
3 bedrooms	32.0%
4 bedrooms	22.7%
5+ bedrooms	5.1%

Vehicles per household

Vehicles	% of households
No vehicle	3.1%
1 vehicle	35.3%
2 vehicles	38.4%
3 or more	23.2%

Heating fuel

Fuel type	%
Utility gas	66.1%
Electricity	29.8%
Propane / LP gas	1.8%
Fuel oil	0.2%
Solar	0.4%
No fuel used	1.6%

Households & families

Household type	Count	%
Married-couple family	5,657	56.2%
Cohabiting couple	474	4.7%
Male householder, no spouse	1,240	12.3%
Female householder, no spouse	2,702	26.8%
Households with children under 18	3,222	32.0%
Households with seniors (65+)	3,379	33.5%
Average household size	2.58

Marital status

Status	Male	Female
Never married	29.0%	28.4%
Married	62.4%	51.9%
Separated	1.2%	0.9%
Widowed	2.5%	9.1%
Divorced	4.8%	9.7%

Education

Less than 9th grade 1.5%

Some HS, no diploma 1.3%

HS graduate 9.8%

Some college, no degree 12.4%

Associate's degree 5.8%

Bachelor's degree 31.8%

Graduate / professional 37.3%

Metric	%
HS diploma or higher	97.2%
Bachelor's or higher	69.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	453	7.4%
Kindergarten	281	4.6%
Elementary school	2,552	41.9%
High school	1,365	22.4%
College / grad school	1,444	23.7%

Employment

Industry of employment

Professional & management 25.7%

Education & healthcare 20.3%

Finance & real estate 9.1%

Manufacturing 8.8%

Retail trade 8.4%

Information 7.0%

Arts, food & hospitality 6.0%

Construction 3.7%

Transportation & utilities 3.3%

Other services 3.3%

Public administration 2.4%

Wholesale trade 1.7%

Agriculture & mining 0.2%

Occupation

Category	%
Management, business & arts	69.6%
Service	10.1%
Sales & office	14.3%
Natural resources & construction	1.8%
Production & transportation	4.2%

Employment type

Type	%
Private sector	83.3%
Government	9.5%
Self-employed	6.5%
Unpaid family workers	0.7%

Commute

Method	%
Drive alone	58.6%
Carpool	4.7%
Public transit	5.6%
Walk	2.7%
Work from home	27.0%
Other means	1.4%
Avg commute (minutes)	29.0

Poverty

All people 5.6%

Under 18 years 6.5%

18 and over 5.4%

Married-couple families 0.8%

Female-led households 13.3%

Income support

Source	% of households
Social Security	29.3%
Retirement income	24.5%
Supplemental Security	2.7%
Cash public assistance	0.6%
Food stamps / SNAP	2.1%

Health indicators

Condition	%
Obesity	20.9%
High blood pressure	25.6%
High cholesterol	32.6%
Diabetes	7.9%
Heart disease	4.8%
Stroke	2.1%
Asthma	8.3%
Arthritis	19.4%
Kidney disease	2.3%
Pulmonary disease	4.0%
Cancer	6.9%

Behavior / access	%
Smoking	7.5%
Binge drinking	16.8%
No physical activity	14.0%
Less than 7 hrs sleep	26.8%
Depression	14.2%
Fair or poor health	9.0%
Poor mental health	11.0%
Poor physical health	7.1%
No health insurance	7.1%
Visited doctor (checkup)	68.8%
Visited dentist	76.2%
Cholesterol screening	94.0%
Teeth loss	5.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	749	3.7%

Disability	%
Any disability	8.5%
Under 18	1.5%
18–64 years	4.6%
65 and over	28.8%

Health insurance coverage

Type	%
Private insurance	87.1%
Public insurance	23.2%
No insurance	2.4%
Uninsured under 19	1.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	24,616	94.1%
Spanish	1,975	8.0%
Other Indo-European	630	2.6%
Asian & Pacific Islander	262	1.1%
Other languages	1,083	4.4%

Place of birth & citizenship

Origin	Count	%
Native born (US)	19,575	74.9%
Born in same state	19,353	74.0%
Born in different state	13,975	53.4%
Foreign born	222	0.8%
Naturalized citizen	6,575	25.1%
Not a US citizen	3,731	56.7%

Ancestry

Ancestry	Count	%
Italian	2,987	11.4%
French	2,103	8%
Arab	801	3.1%
Polish	415	1.6%
English	310	1.2%

Ancestry	Count	%
Dutch	159	0.6%
Irish	74	0.3%
German	56	0.2%
Norwegian	31	0.1%

Technology access

Metric	% of households
Computer access	38.5%
Internet access	97.6%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 94402

What city is ZIP code 94402 in?

ZIP code 94402 is primarily assigned to San Mateo, California.

What county is ZIP code 94402 in?

ZIP code 94402 falls within San Mateo County, California.

How educated is the population of ZIP code 94402?

69% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

What is the median household income in ZIP code 94402?

The median household income in ZIP code 94402 is $184,453, above the national median of ~$75,000.

What is the typical home value in ZIP code 94402?

The median home value in ZIP code 94402 is $2,000,000.

What is the population of ZIP code 94402?

ZIP code 94402 has an estimated population of 26,150 residents, with a density of 5,178 people per square mile.

What timezone is ZIP code 94402 in?

ZIP code 94402 observes the PST timezone.