94070 ZIP Code — San Carlos, CA

San Mateo County, California

ZIP code 94070 is located in San Carlos, California, within San Mateo County. It covers approximately 6.12 square miles and serves a population of 31,312 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 650.

About ZIP code 94070

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 70%.

The gap between median ($220,323) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 3% 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 26 minutes is near the national average. Remote work is prevalent — 29% of workers work from home.

Educational attainment is high — 67% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 94070 reflects a community defined by a highly educated population and a high rate of remote workers.

31,312

population

6.12

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

94070 ZIP code map

Cities in ZIP code 94070

Below are the cities the US Postal Service accepts for ZIP code 94070. Using any city not on this list may result in mail delivery delays.

City	Status
San Carlos	Preferred

Nearby ZIP codes

94002 Belmont (2 mi) 94061 Redwood City (2.6 mi) 94065 Redwood City (3 mi) 94063 Redwood City (3.5 mi) 94403 San Mateo (3.7 mi) 94404 San Mateo (4.1 mi) 94402 San Mateo (4.6 mi) 94027 Atherton (4.6 mi) 94025 Menlo Park (5.1 mi) 94497 San Mateo (5.7 mi) 94062 Redwood City (6.1 mi) 94401 San Mateo (6.2 mi)

Demographics updated 06/2026

Population
Total population	31,312
Population density	5,116 / sq mi
State FIPS	06
County FIPS	081

Geography
Land area	6.12 sq mi
Water area	0.00 sq mi
Latitude	37.4950
Longitude	-122.2677
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	11.3%	18.4%	32.6%
$50k – $100k	14.9%	20.5%	27.7%
$100k – $200k	25.9%	30.5%	26.4%
Over $200k	47.9%	30.6%	13.3%

Demographics & statistics

31,312

Population

5,116

People per sq mi

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

Income range	This ZIP	County avg	State avg
Under $50k	11.3%	18.4%	32.6%
$50k – $100k	14.9%	20.5%	27.7%
$100k – $200k	25.9%	30.5%	26.4%
Over $200k	47.9%	30.6%	13.3%

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%
Work from home	29.0%
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	%
Obesity	21.6%
High blood pressure	24.9%
High cholesterol	32.2%
Diabetes	7.3%
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	%
Smoking	7.5%
Binge drinking	17.9%
No physical activity	12.6%
Less than 7 hrs sleep	26.5%
Depression	15.1%
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%
No insurance	1.2%
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 about ZIP code 94070

What city is ZIP code 94070 in?

ZIP code 94070 is primarily assigned to San Carlos, California.

What county is ZIP code 94070 in?

ZIP code 94070 falls within San Mateo County, California.

How educated is the population of ZIP code 94070?

67% 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 94070?

The median household income in ZIP code 94070 is $220,323, above the national median of ~$75,000.

What is the typical home value in ZIP code 94070?

The median home value in ZIP code 94070 is $2,000,000.

What is the population of ZIP code 94070?

ZIP code 94070 has an estimated population of 31,312 residents, with a density of 5,116 people per square mile.

What timezone is ZIP code 94070 in?

ZIP code 94070 observes the PST timezone.