Portola Valley ZIP Codes — San Mateo County, CA

There is one unique ZIP code in Portola Valley, California and it is 94028. Area code: 650.
1
ZIP codes
17.32
sq mi land
0.09
sq mi water
650
area code
Portola Valley, CA ZIP code map

About Portola Valley, CA

Portola Valley, California, is a quaint and picturesque community nestled in the heart of San Mateo County. Known for its serene environment and natural beauty, it offers a unique blend of suburban charm and access to the great outdoors. With its rich history and commitment to preserving open spaces, Portola Valley attracts residents who cherish tranquility and a close-knit community feel.

Location & geography

Portola Valley covers a land area of 17.32 square miles, complemented by a water area of 0.09 square miles. It is ideally situated near major highways, just a short drive from neighboring cities such as Menlo Park, approximately 5 miles to the northeast, and Palo Alto, about 6 miles east. The terrain is characterized by rolling hills and open space, providing stunning views of the San Francisco Peninsula.

Community & economy

The community of Portola Valley is known for its affluent neighborhoods and a strong emphasis on preserving the environment. Many residents engage in industries such as technology, education, and professional services, contributing to the area’s economy while enjoying a high quality of life. Daily life here is often marked by outdoor activities, social events, and community gatherings that foster a sense of belonging among its residents.

Transportation

Portola Valley is conveniently located near major roadways, with access to the Alpine Road and the California State Route 280, which connects to the greater Bay Area. The nearest airport is San Francisco International Airport, situated approximately 20 miles to the north, making travel accessible for both residents and visitors. Public transit options are limited, emphasizing the community's tranquil, suburban lifestyle.

History

Portola Valley was founded in the late 1950s and early 1960s, developing rapidly as a residential area while maintaining its natural landscapes. Key industries have historically included agriculture and, more recently, high-tech sectors, given its proximity to Silicon Valley. Notable events include the establishment of numerous parks and preserves, reflecting the community's dedication to conservation.

Did you know?

An interesting fact about Portola Valley is that it has a long-standing commitment to environmental sustainability, exemplified by its numerous preserved open spaces and parks. Additionally, it is one of the few towns in California that has no streetlights, contributing to its dark-sky initiative and preserving the night sky for stargazing.

ZIP codes for Portola Valley, CA (1)
ZIP code City County Map
94028 Portola Valley San Mateo View map

Demographics & statistics

6,888
Population
55.9
Median age
$243,516
Median household income
$157,655
Per capita income
$2,000,000
Median home value
$3,501
Median monthly rent
83.2%
Home ownership
3.1%
Poverty rate
4.4%
Unemployment
2,295
Housing units
77.9%
Bachelor's or higher

Age distribution

Male Female
160
Under 5
158
163
5–9
161
116
10–14
115
191
15–19
188
173
20–24
171
227
25–34
223
239
35–44
235
411
45–54
405
290
55–59
286
288
60–64
284
580
65–74
570
379
75–84
374
253
85+
249
← Male
Female →

Age summary

GroupCount%
Under 181,08915.8%
18 and over5,79984.2%
65 and over2,40534.9%
Median age55.9 years

Race & ethnicity

White 70.8%
Hispanic or Latino 10%
Two or more races 6.7%
Asian 6.2%
Other race 6.1%
American Indian / Alaska Native 0.1%
Black or African American 0.1%
GroupCount%
White5,41370.8%
Hispanic or Latino76210%
Two or more races5146.7%
Asian4786.2%
Other race4696.1%
American Indian / Alaska Native100.1%
Black or African American40.1%

Household income

Under $10k 1.1%
$15k–$25k 3.2%
$25k–$35k 2.5%
$35k–$50k 2.2%
$50k–$75k 2.9%
$75k–$100k 6.3%
$100k–$150k 13.4%
$150k–$200k 10.4%
$200k+ 58.0%
Range% of households
Under $10k1.1%
$15k–$25k3.2%
$25k–$35k2.5%
$35k–$50k2.2%
$50k–$75k2.9%
$75k–$100k6.3%
$100k–$150k13.4%
$150k–$200k10.4%
$200k+58.0%
Median income$243,516

Housing

Home values

Under $50k 0.6%
$200k–$300k 0.5%
$300k–$500k 0.8%
$1M+ 98.1%

Housing overview

MetricValue
Median home value$2,000,000
Median rent / month$3,501
Owner occupied83.2%
Renter occupied16.8%
Vacant5.6%
Single-family detached85.8%
Large apartment buildings0.5%
Mobile homes2.9%
Median rooms7.1
Avg household size (owned)2.65

Year built

Era%
2020 or later0.0%
2010–20193.5%
2000–20094.4%
1990–19994.8%
1980–198916.7%
1970–197916.2%
1960–196928.4%
1950–195917.9%
1940–19490.9%
1939 or earlier7.2%

Bedrooms

Size% of units
No bedroom (studio)2.5%
1 bedroom7.8%
2 bedrooms10.7%
3 bedrooms31.7%
4 bedrooms33.6%
5+ bedrooms13.7%

Vehicles per household

Vehicles% of households
No vehicle4.5%
1 vehicle21.7%
2 vehicles32.3%
3 or more41.5%

Heating fuel

Fuel type%
Utility gas76.0%
Electricity20.6%
Propane / LP gas1.9%
Fuel oil0.4%
Solar0.5%

Households & families

Household typeCount%
Married-couple family1,75168.0%
Cohabiting couple752.9%
Male householder, no spouse36314.1%
Female householder, no spouse38615.0%
Households with children under 1849019.0%
Households with seniors (65+)1,51358.8%
Average household size2.65

Marital status

StatusMaleFemale
Never married26.4%16.4%
Married63.2%63.7%
Separated1.0%0.0%
Widowed6.7%8.7%
Divorced2.7%11.2%

Education

Less than 9th grade 2.7%
Some HS, no diploma 3.9%
HS graduate 4.1%
Some college, no degree 6.8%
Associate's degree 4.6%
Bachelor's degree 32.1%
Graduate / professional 45.8%
Metric%
HS diploma or higher93.4%
Bachelor's or higher77.9%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool18312.2%
Kindergarten986.5%
Elementary school39626.3%
High school32521.6%
College / grad school50233.4%

Employment

Industry of employment

Professional & management 25.3%
Education & healthcare 17.7%
Agriculture & mining 13.3%
Finance & real estate 10.7%
Information 8.5%
Manufacturing 7.0%
Arts, food & hospitality 6.3%
Construction 4.8%
Retail trade 2.6%
Other services 1.2%
Public administration 1.2%
Wholesale trade 1.1%
Transportation & utilities 0.4%

Occupation

Category%
Management, business & arts69.7%
Service6.4%
Sales & office10.2%
Natural resources & construction12.8%
Production & transportation0.9%

Employment type

Type%
Private sector86.2%
Government2.7%
Self-employed10.3%
Unpaid family workers0.7%

Commute

Method%
Drive alone49.1%
Carpool3.6%
Public transit1.3%
Walk1.9%
Other means4.9%
Avg commute (minutes)22.7

Poverty

All people 3.1%
Under 18 years 0.0%
18 and over 3.7%
Married-couple families 0.0%
Female-led households 0.0%

Income support

Source% of households
Social Security47.1%
Retirement income32.5%
Supplemental Security2.4%
Cash public assistance0.0%
Food stamps / SNAP1.3%

Health indicators

Condition%
High blood pressure30.1%
High cholesterol35.3%
Heart disease6.2%
Stroke2.5%
Asthma8.3%
Arthritis24.2%
Kidney disease2.8%
Pulmonary disease4.7%
Cancer9.7%
Behavior / access%
Binge drinking15.3%
No physical activity12.3%
Less than 7 hrs sleep23.9%
Fair or poor health8.6%
Poor mental health9.7%
Poor physical health7.4%
No health insurance4.6%
Visited doctor (checkup)73.0%
Visited dentist80.9%
Cholesterol screening96.4%
Teeth loss4.9%

Veterans & disability

VeteransCount%
Civilian veterans2674.6%
Disability%
Any disability9.6%
Under 185.2%
18–64 years5.2%
65 and over18.1%

Health insurance coverage

Type%
Private insurance84.2%
Public insurance34.5%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only6,57095.4%
Spanish4036.1%
Other Indo-European3485.3%
Asian & Pacific Islander340.5%
Other languages210.3%

Place of birth & citizenship

OriginCount%
Native born (US)5,65182.0%
Born in same state5,50479.9%
Born in different state3,17946.2%
Foreign born1472.1%
Naturalized citizen1,23718.0%
Not a US citizen56545.7%

Ancestry

AncestryCount%
French1,00114.5%
Italian97514.2%
Arab1352%
English1231.8%
Polish1101.6%
AncestryCount%
Dutch1071.6%
Norwegian851.2%
Irish691%
German140.2%

Technology access

Metric% of households
Computer access37.4%
Internet access99.1%

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

Frequently asked questions
What ZIP codes does Portola Valley, CA have?
Portola Valley, CA has one ZIP code: 94028. Each ZIP code serves a distinct delivery area within the city and surrounding region.
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