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ZIP Code 94028
Portola Valley, CA, San Mateo County
Population
6,531
Land area
17.3sq mi
People per sq mi
377
City
Portola Valley
ZIP 94028 and nearby ZIP codes
ZIP 94028 at a glance
- ZIP 94028 (Portola Valley) is 50% denser than California as a whole.
- The median household income is more than $250,000, the highest bracket the Census Bureau reports.
- A typical owner-occupied home is valued at more than $2,000,000 and median rent is more than $3,500 a month.
Local data for ZIP 94028
Counts from official public data
Housing and community stats
ZIP 94028, American Community Survey 2020-2024
Median household income
$250,000+
Poverty rate
4.4%
Median home value
$2,000,000+
Prices -5.0% in a year
Median rent
$3,500+/mo
Homeownership
81.9%
Bachelor's or higher
82.9%
Median age
57.2
Average commute
17.7 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
210
ZIP Business Patterns 2023
Employees
1,822
$140M annual payroll
PPP loans
$15.7M
189 loans
Campaign donations
$4.1M
33% D, 7% R, 2026 cycle
Environment and hazard risk
ZIP 94028, from FEMA, NOAA and EPA
Natural hazard risk
Relatively High
Top: earthquake
Storm events since 1996
690
Countywide, mostly strong wind
Flood insurance policies
3,346
1.8% of homes, county
July high / Jan low
88° / 38°F
Health statistics
Share of adults in ZIP 94028, CDC PLACES estimates
Obesity
21.6%
U.S. 33.3% -11.7 pts
Diabetes
9.6%
U.S. 12.1% -2.5 pts
Smoking
6.2%
U.S. 12.8% -6.6 pts
Uninsured (18-64)
3.3%
U.S. 11.1% -7.8 pts
Frequently asked questions
- What city is ZIP code 94028?
- ZIP code 94028 is in Portola Valley, CA (San Mateo County).
- What county is ZIP code 94028 in?
- ZIP code 94028 is mostly in San Mateo County, California.
- How many people live in ZIP code 94028?
- About 6,531 people live in the 94028 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.