94028
Zip code 94028: Portola Valley, California
Population
6,531
Median household income
$250K+
U.S. $81K
Median home value
$2M+
U.S. $333K
Median rent
$3,500+/mo
U.S. $1,413
Median age
57.2
U.S. 38.9
Land area
17 sq mi
377 people/sq mi
Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.
About 94028
94028 is a small-town zip code in Portola Valley, California (San Mateo County), covering 17 sq mi of land. About 6,531 people live here, or 377 per square mile. The median resident is 57.2 years old, compared with 38.9 nationally.
The median household income is $250,000+ a year, the Census Bureau's reporting limit (U.S.: $80,734). 4.4% of residents live below the poverty line (U.S.: 12.5%). The median home value is $2,000,000+. 82% of occupied homes are lived in by their owners, and renters pay a median of $3,500+ a month.
83% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 17.7 minutes each way, and 45% of workers work from home. The most common jobs among working residents are in management; business and finance; and healthcare. 23% of them are self-employed (U.S.: 10%).
How 94028 compares
Sorted from highest to lowest national percentile
- Median household income$250,000+99thStrengthU.S. $80,734 · CA $99,12210th of 1,575 in CA
- Per capita income$175,39599thStrengthU.S. $44,673 · CA $49,5135th of 1,685 in CA
- Median home value$2,000,000+99thU.S. $332,700 · CA $734,70048th of 1,586 in CA
- Median gross rent$3,500+99thU.S. $1,413 · CA $2,03636th of 1,464 in CA
- 99thStrengthU.S. 35.7% · CA 37.1%21st of 1,687 in CA
- Work from home45.4%99thU.S. 15.1% · CA 17.2%38th of 1,680 in CA
- 99thWeaknessU.S. 51.1% · CA 55.3%68th of 1,610 in CA
- 99thU.S. 17.2% · CA 15.7%97th of 1,688 in CA
- Median earnings per worker$112,41299thStrengthU.S. $49,666 · CA $52,64379th of 1,658 in CA
- 99thU.S. 10% · CA 11.4%172nd of 1,678 in CA
- Median age57.298thU.S. 38.9 · CA 37.9142nd of 1,687 in CA
- Broadband access97.5%95thStrengthU.S. 91% · CA 93.5%229th of 1,662 in CA
- Tech workers7.6%92ndU.S. 3.8% · CA 4.4%187th of 1,678 in CA
- 84thWeaknessU.S. 0.483 · CA 0.489335th of 1,651 in CA
- Homeownership rate81.9%83rdStrengthU.S. 65.2% · CA 55.9%247th of 1,662 in CA
- 70thU.S. 14.1% · CA 27%934th of 1,688 in CA
- Healthcare workers10.6%66thU.S. 9.7% · CA 9.4%461st of 1,678 in CA
- Housing vacancy6.1%45thU.S. 10.1% · CA 7.5%911th of 1,664 in CA
- Veterans5.2%41stU.S. 6.2% · CA 4.3%676th of 1,686 in CA
- Diversity index42.840thU.S. 61.4 · CA 69.71,226th of 1,688 in CA
- 39thU.S. 5.2% · CA 6.6%1,290th of 1,681 in CA
- Population density377/sq mi29thU.S. 95/sq mi · CA 252/sq mi997th of 1,688 in CA
- Residents under 1817.9%18thU.S. 22% · CA 22%1,126th of 1,688 in CA
- Uninsured rate2.8%11thStrengthU.S. 8.4% · CA 6.6%1,329th of 1,675 in CA
- Population6,53110thU.S. 334,922,499 · CA 39,287,3771,086th of 1,688 in CA
- Poverty rate4.4%8thStrengthU.S. 12.5% · CA 12%1,496th of 1,666 in CA
- Average commute17.7 min5thStrengthU.S. 26.4 min · CA 28.7 min1,484th of 1,584 in CA
- 1stU.S. 14.5% · CA 14.8%1,625th of 1,678 in CA
| Measure | 94028 | San Mateo | CA | U.S. | National percentile | Rank in CA |
|---|---|---|---|---|---|---|
| Median household incomeStrength | $250,000+ | $158,855 | $99,122 | $80,734 | 10th of 1,575 | |
| Per capita incomeStrength | $175,395 | $84,288 | $49,513 | $44,673 | 5th of 1,685 | |
| Median home value | $2,000,000+ | $1,559,600 | $734,700 | $332,700 | 48th of 1,586 | |
| Median gross rent | $3,500+ | $2,922 | $2,036 | $1,413 | 36th of 1,464 | |
| Bachelor's degree or higherStrength | 82.9% | 53.7% | 37.1% | 35.7% | 21st of 1,687 | |
| Work from home | 45.4% | 24.3% | 17.2% | 15.1% | 38th of 1,680 | |
| Rent-burdened rentersWeakness | 83.2% | 48.4% | 55.3% | 51.1% | 68th of 1,610 | |
| Residents 65 and older | 39.7% | 17.8% | 15.7% | 17.2% | 97th of 1,688 | |
| Median earnings per workerStrength | $112,412 | $79,802 | $52,643 | $49,666 | 79th of 1,658 | |
| Self-employed workers | 23% | 10.5% | 11.4% | 10% | 172nd of 1,678 | |
| Median age | 57.2 | 40.9 | 37.9 | 38.9 | 142nd of 1,687 | |
| Broadband accessStrength | 97.5% | 95.7% | 93.5% | 91% | 229th of 1,662 | |
| Tech workers | 7.6% | 8.3% | 4.4% | 3.8% | 187th of 1,678 | |
| Income inequality (Gini)Weakness | 0.488 | 0.497 | 0.489 | 0.483 | 335th of 1,651 | |
| Homeownership rateStrength | 81.9% | 58.5% | 55.9% | 65.2% | 247th of 1,662 | |
| Foreign-born residents | 17.7% | 35.7% | 27% | 14.1% | 934th of 1,688 | |
| Healthcare workers | 10.6% | 9.6% | 9.4% | 9.7% | 461st of 1,678 | |
| Housing vacancy | 6.1% | 7.9% | 7.5% | 10.1% | 911th of 1,664 | |
| Veterans | 5.2% | 2.9% | 4.3% | 6.2% | 676th of 1,686 | |
| Diversity index | 42.8 | 71.8 | 69.7 | 61.4 | 1,226th of 1,688 | |
| Unemployment rate | 4.3% | 4.8% | 6.6% | 5.2% | 1,290th of 1,681 | |
| Population density | 377/sq mi | 1,655/sq mi | 252/sq mi | 95/sq mi | 997th of 1,688 | |
| Residents under 18 | 17.9% | 19.5% | 22% | 22% | 1,126th of 1,688 | |
| Uninsured rateStrength | 2.8% | 3.8% | 6.6% | 8.4% | 1,329th of 1,675 | |
| Population | 6,531 | 742,340 | 39,287,377 | 334,922,499 | 1,086th of 1,688 | |
| Poverty rateStrength | 4.4% | 6.7% | 12% | 12.5% | 1,496th of 1,666 | |
| Average commuteStrength | 17.7 min | 26.4 min | 28.7 min | 26.4 min | 1,484th of 1,584 | |
| Government workers | 2.7% | 11.6% | 14.8% | 14.5% | 1,625th of 1,678 |
The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.
People
Age
6%Under 5
12%5–17
4%18–24
6%25–34
8%35–44
11%45–54
14%55–64
20%65–74
19%75+
Median age
57.2
Under 18
17.9%
65 and over
39.7%
Race and ethnicity
- White74%
- Black0.1%
- Hispanic11%
- Asian9%
- Native American0%
- Pacific Islander0%
- Other0.7%
- Multiracial5%
Diversity index
42.8
U.S. 61.4
Foreign-born
17.7%
U.S. 14.1%
Born in state
40.1%
Language spoken at home (households)
English only
83%
Spanish
2%
Other Indo-European
10%
Asian / Pacific
5%
Other
0%
Households
- Households
- 2,637
- Average household size
- 2.5
- Family households
- 70.8%
- Married couples
- 67.3%
- Living alone
- 25.7%
- Veterans (of adults)
- 5.2%
- Male / female
- 51% / 49%
Income and poverty
Household income distribution
<$25k
6%
$25–50k
3%
$50–75k
1%
$75–100k
5%
$100–150k
15%
$150–200k
5%
$200k+
64%
Median household income
94028
$250,000+
San Mateo Co.
$158,855
California
$99,122
United States
$80,734
Per capita income
$175,395
U.S. $44,673
Poverty rate
4.4%
U.S. 12.5%
Households earning $150K+
69.7%
U.S. 23%
Income inequality (Gini)
0.488
U.S. 0.483
Housing
Median home value
94028
$2,000,000+
San Mateo Co.
$1,559,600
California
$734,700
United States
$332,700
Median gross rent
94028
$3,500+
San Mateo Co.
$2,922
California
$2,036
United States
$1,413
Types of housing
Single-family
88%
2–4 units
0.5%
5–19 units
8%
20+ units
0.5%
Mobile home
2%
Boat, RV, van
0%
- Housing units
- 2,808
- Owner-occupied
- 81.9%
- Vacant
- 6.1%
- Median year built
- 1965
- Median rooms
- 7
- Renters paying 30%+ of income
- 83.2%
- Renters paying 50%+ of income
- 59.6%
- Home value to income
- 8.0× (U.S. 4.1×)
Work and commute
How people get to work
Drove alone
47%
Carpooled
2%
Transit
1%
Walked
2%
Bicycle
2%
Worked from home
45%
Other
0%
Commute time (one way)
<10 min
10%
10–19
53%
20–29
20%
30–44
13%
45–59
1%
60+
3%
Average commute
17.7 min
U.S. 26.4 min
Unemployment
4.3%
U.S. 5.2%
In labor force
51.8%
U.S. 63.5%
Jobs and careers
What employed residents do, wherever they work
Occupations
Management
26%
Business and finance
13%
Healthcare
11%
Farming, fishing and forestry
8%
Computer and math
8%
Arts, media and sports
6%
Legal and social services
6%
Engineering and science
5%
Cleaning and personal care
4%
Education
4%
Sales
4%
Office and admin
3%
Construction and repair
2%
Production
0.8%
Food service
0.5%
Police and fire
0.1%
Transportation and moving
0%
Industries
Professional and technical services
26%
Finance, insurance and real estate
16%
Agriculture and mining
11%
Information
9%
Health care and social assistance
9%
Education
9%
Other services
5%
Retail
4%
Arts and recreation
4%
Construction
2%
Manufacturing
2%
Wholesale
1%
Admin, support and management
0.9%
Public administration
0.8%
Restaurants and hotels
0.6%
Transportation, warehousing and utilities
0%
Median earnings per worker
$112,412
U.S. $49,666
Self-employed
23%
U.S. 10%
Government workers
2.7%
U.S. 14.5%
Nonprofit workers
15.6%
U.S. 8.8%
Median earnings by type of work
| Type of work | 94028 | U.S. |
|---|---|---|
| Management, business, science and arts | $173,750 | $74,888 |
| Service | $26,975 | $26,804 |
| Sales and office | $85,762 | $40,476 |
| Construction and maintenance | $46,375 | $49,199 |
| Production and transportation | — | $39,989 |
Education, internet and health coverage
Highest education (adults 25+)
No diploma
5%
High school
3%
Some college
7%
Associate's
2%
Bachelor's
33%
Graduate
50%
- High school graduate or higher
- 94.9%
- Bachelor's degree or higher
- 82.9%
- Graduate or professional degree
- 49.7%
- Households with broadband
- 97.5%
- Cable, fiber or DSL
- 92.3%
- No internet access
- 0.5%
- Without health insurance
- 2.8%
- Limited-English households
- 1.2%
Geography
- City (USPS)
- Portola Valley
- State
- California
- County
- San Mateo County
- Center point
- 37.3749° N, 122.2127° W
- Land area
- 17 sq mi
- Water area
- 0.1 sq mi
- Time zone
- Pacific Time (UTC-8, UTC-7 in summer)
- Zip type
- Residential delivery area
94028 spans 2 counties
- San Mateo County81% of land
- Santa Clara County19% of land
Cities and towns within this zip
- Portola Valley52% of zip
- Palo Alto13% of zip
- Ladera (unincorporated)3% of zip
Census places overlapping the zip's area. Mail may use a different city name than the municipality.
Zip codes near 94028
| Zip | City | Distance | IncomeMedian income |
|---|---|---|---|
| 94304 | Palo Alto, CA | 2.9 mi | $154,141 |
| 94305 | Stanford, CA | 3.8 mi | $83,088 |
| 94022 | Los Altos, CA | 4 mi | $250,000+ |
| 94062 | Redwood City, CA | 5.2 mi | $233,262 |
| 94306 | Palo Alto, CA | 5.3 mi | $210,000 |
| 94025 | Menlo Park, CA | 5.5 mi | $216,601 |
| 94023 | Los Altos, CA · PO box | 5.5 mi | — |
| 94027 | Atherton, CA | 5.7 mi | $250,000+ |
| 94301 | Palo Alto, CA | 5.9 mi | $242,006 |
| 94302 | Palo Alto, CA · PO box | 6 mi | — |
| 94309 | Palo Alto, CA · PO box | 6 mi | — |
| 94061 | Redwood City, CA | 6.1 mi | $146,265 |
Zip codes like 94028 elsewhere
Matched on income, home values, age, density, education, housing and commuting
0177355% match
Lincoln, MA
Income
$209K
Home
$1.2M
Age
52.5
9310848% match
Santa Barbara, CA
Income
$230K
Home
$2M+
Age
54.5
9201448% match
Del Mar, CA
Income
$199K
Home
$2M+
Age
52.5
0873841% match
Mantoloking, NJ
Income
$250K+
Home
$1.5M
Age
58.6
9021037% match
Beverly Hills, CA
Income
$188K
Home
$2M+
Age
51.9
1057636% match
Pound Ridge, NY
Income
$250K+
Home
$1.1M
Age
51.9
Questions about 94028
What city is zip code 94028?
94028 is assigned to Portola Valley, California. The city name is the one the Postal Service prefers for mail addressed to this zip code.
What county is 94028 in?
94028 is mostly in San Mateo County, but it extends into 1 other county.
What is the population of 94028?
About 6,531 people live in 94028, according to the Census Bureau's American Community Survey.
What time zone is 94028 in?
94028 is in Pacific Time.
What is the median household income in 94028?
The median household income in 94028 is $250,000+.
What zip codes are near 94028?
The closest zip codes to 94028 are 94304, 94305, 94022, 94062, 94306.
Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 94028, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.