San Carlos ZIP Codes — San Mateo County, CA

There is one unique ZIP code in San Carlos, California and it is 94070. Area code: 650.

ZIP codes

6.12

sq mi land

0.00

sq mi water

650

area code

San Carlos, CA ZIP code map

About San Carlos, CA

San Carlos, CA is a charming city located in the heart of San Mateo County. Known for its friendly community and family-oriented atmosphere, this small city offers a blend of suburban comfort and easy access to urban amenities. With its beautiful parks and vibrant downtown area, San Carlos is a wonderful place to live and visit.

Location & geography

San Carlos is situated approximately halfway between San Francisco and San Jose, making it an ideal spot for commuters. The city is surrounded by neighboring cities, with Redwood City to the north, Belmont to the south, and Menlo Park to the east, all within a few miles. The total land area of San Carlos is 6.12 square miles, and the city features no water area.

Community & economy

The character of San Carlos is characterized by its strong sense of community and a variety of local events that foster connections among residents. The city has a mixed economy, with industries ranging from technology to retail, providing various job opportunities for its residents. Daily life in San Carlos includes enjoying outdoor activities in its many parks, exploring local restaurants, and participating in community events.

Transportation

San Carlos is easily accessible via major highways, including U.S. Route 101, which runs to the east of the city and connects it to the larger Bay Area. The nearest airport is San Carlos Airport, a general aviation airport, while San Francisco International Airport is also conveniently located approximately 15 miles to the northwest. Public transit options include Caltrain, which provides commuter service up and down the Peninsula.

History

San Carlos was incorporated in 1925 and has developed into a vibrant community over the years. Historically, the city’s economy was centered around agriculture and timber, but it has since evolved into a suburban locale with diverse industries. Notable events in San Carlos include the annual Art & Wine Faire, which showcases local artists and fosters community spirit.

Did you know?

One surprising fact about San Carlos is that it is often referred to as the 'City of Good Living' due to its pleasant climate and high quality of life. It is also home to the San Carlos Historical Museum, which provides insights into the city’s rich heritage.

ZIP codes for San Carlos, CA (1)

ZIP code	City	County	Map
94070	San Carlos	San Mateo	View map

Demographics & statistics

31,312

Population

41.8

Median age

$220,323

Median household income

$113,661

Per capita income

$2,000,000

Median home value

$2,759

Median monthly rent

70.1%

Home ownership

3.0%

Poverty rate

4.1%

Unemployment

8,795

Housing units

67.2%

Bachelor's or higher

Age distribution

Male Female

808

Under 5

846

1,030

5–9

1,080

1,056

10–14

1,106

877

15–19

919

599

20–24

628

1,437

25–34

1,507

2,498

35–44

2,618

2,271

45–54

2,381

1,297

55–59

1,360

862

60–64

904

1,439

65–74

1,508

733

75–84

768

381

85+

399

← Male

Female →

Age summary

Group	Count	%
Under 18	7,328	23.4%
18 and over	23,984	76.6%
65 and over	5,228	16.7%
Median age	41.8 years

Race & ethnicity

White 59.2%

Asian 18.9%

Two or more races 11.3%

Hispanic or Latino 6.6%

Other race 2.7%

Black or African American 0.6%

Native Hawaiian / Pacific Islander 0.5%

American Indian / Alaska Native 0.1%

Group	Count	%
White	19,854	59.2%
Asian	6,349	18.9%
Two or more races	3,783	11.3%
Hispanic or Latino	2,204	6.6%
Other race	914	2.7%
Black or African American	209	0.6%
Native Hawaiian / Pacific Islander	160	0.5%
American Indian / Alaska Native	43	0.1%

Household income

Under $10k 2.0%

$10k–$15k 0.7%

$15k–$25k 1.9%

$25k–$35k 2.1%

$35k–$50k 3.1%

$50k–$75k 7.0%

$75k–$100k 5.4%

$100k–$150k 15.2%

$150k–$200k 9.3%

$200k+ 53.4%

Range	% of households
Under $10k	2.0%
$10k–$15k	0.7%
$15k–$25k	1.9%
$25k–$35k	2.1%
$35k–$50k	3.1%
$50k–$75k	7.0%
$75k–$100k	5.4%
$100k–$150k	15.2%
$150k–$200k	9.3%
$200k+	53.4%
Median income	$220,323

Housing

Home values

Under $50k 0.8%

$100k–$150k 0.5%

$150k–$200k 0.3%

$200k–$300k 0.9%

$300k–$500k 0.7%

$500k–$1M 2.4%

$1M+ 94.5%

Housing overview

Metric	Value
Median home value	$2,000,000
Median rent / month	$2,759
Owner occupied	70.1%
Renter occupied	29.9%
Vacant	5.2%
Single-family detached	69.4%
Large apartment buildings	7.8%
Mobile homes	0.0%
Median rooms	5.7
Avg household size (owned)	2.86

Year built

Era	%
2020 or later	0.1%
2010–2019	3.3%
2000–2009	3.5%
1990–1999	3.9%
1980–1989	10.9%
1970–1979	13.7%
1960–1969	16.4%
1950–1959	21.0%
1940–1949	19.6%
1939 or earlier	7.6%

Bedrooms

Size	% of units
No bedroom (studio)	2.4%
1 bedroom	9.9%
2 bedrooms	26.1%
3 bedrooms	34.1%
4 bedrooms	19.7%
5+ bedrooms	7.7%

Vehicles per household

Vehicles	% of households
No vehicle	3.8%
1 vehicle	24.8%
2 vehicles	47.1%
3 or more	24.3%

Heating fuel

Fuel type	%
Utility gas	75.5%
Electricity	20.6%
Propane / LP gas	1.8%
Wood	0.1%
Solar	0.5%
No fuel used	1.3%

Households & families

Household type	Count	%
Married-couple family	7,232	62.2%
Cohabiting couple	605	5.2%
Male householder, no spouse	1,240	10.7%
Female householder, no spouse	2,550	21.9%
Households with children under 18	4,276	36.8%
Households with seniors (65+)	3,368	29.0%
Average household size	2.68

Marital status

Status	Male	Female
Never married	28.5%	21.3%
Married	62.6%	57.5%
Separated	0.7%	1.3%
Widowed	1.1%	8.5%
Divorced	7.1%	11.4%

Education

Less than 9th grade 1.6%

Some HS, no diploma 1.7%

HS graduate 8.1%

Some college, no degree 15.2%

Associate's degree 6.2%

Bachelor's degree 30.4%

Graduate / professional 36.8%

Metric	%
HS diploma or higher	96.7%
Bachelor's or higher	67.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	653	8.5%
Kindergarten	427	5.6%
Elementary school	3,311	43.3%
High school	1,777	23.3%
College / grad school	1,475	19.3%

Employment

Industry of employment

Professional & management 27.1%

Education & healthcare 19.0%

Manufacturing 9.1%

Information 8.4%

Retail trade 7.0%

Finance & real estate 7.0%

Other services 5.8%

Arts, food & hospitality 5.3%

Construction 4.6%

Transportation & utilities 2.9%

Public administration 2.4%

Wholesale trade 1.2%

Agriculture & mining 0.2%

Occupation

Category	%
Management, business & arts	69.8%
Service	9.5%
Sales & office	12.2%
Natural resources & construction	4.5%
Production & transportation	4.0%

Employment type

Type	%
Private sector	84.5%
Government	8.1%
Self-employed	7.2%
Unpaid family workers	0.3%

Commute

Method	%
Drive alone	58.4%
Carpool	3.4%
Public transit	3.5%
Walk	1.6%
Other means	4.1%
Avg commute (minutes)	26.4

Poverty

All people 3.0%

Under 18 years 2.7%

18 and over 3.1%

Married-couple families 1.1%

Female-led households 6.1%

Income support

Source	% of households
Social Security	24.5%
Retirement income	22.6%
Supplemental Security	1.6%
Cash public assistance	1.6%
Food stamps / SNAP	0.7%

Health indicators

Condition	%
High blood pressure	24.9%
High cholesterol	32.2%
Heart disease	4.6%
Stroke	2.0%
Asthma	8.6%
Arthritis	19.3%
Kidney disease	2.2%
Pulmonary disease	4.0%
Cancer	6.9%

Behavior / access	%
Binge drinking	17.9%
No physical activity	12.6%
Less than 7 hrs sleep	26.5%
Fair or poor health	8.3%
Poor mental health	11.2%
Poor physical health	6.9%
No health insurance	5.8%
Visited doctor (checkup)	68.4%
Visited dentist	78.1%
Cholesterol screening	94.5%
Teeth loss	5.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	859	3.6%

Disability	%
Any disability	7.7%
Under 18	2.5%
18–64 years	5.1%
65 and over	24.4%

Health insurance coverage

Type	%
Private insurance	91.1%
Public insurance	20.0%
Uninsured under 19	1.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	29,658	94.7%
Spanish	1,737	5.9%
Other Indo-European	530	1.8%
Asian & Pacific Islander	489	1.6%
Other languages	659	2.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	23,749	75.8%
Born in same state	23,262	74.3%
Born in different state	16,288	52.0%
Foreign born	487	1.6%
Naturalized citizen	7,563	24.2%
Not a US citizen	4,547	60.1%

Ancestry

Ancestry	Count	%
Italian	3,989	12.7%
French	3,507	11.2%
Arab	1,008	3.2%
English	685	2.2%
Dutch	383	1.2%

Ancestry	Count	%
Polish	343	1.1%
Irish	139	0.4%
German	127	0.4%
Norwegian	60	0.2%

Technology access

Metric	% of households
Computer access	37.1%
Internet access	98.7%

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

Frequently asked questions

What ZIP codes does San Carlos, CA have?

San Carlos, CA has one ZIP code: 94070. Each ZIP code serves a distinct delivery area within the city and surrounding region.