ZIP code 94028: Portola Valley, CA
94028 is a ZIP code in Portola Valley, California, mainly in San Mateo County, part of the San Francisco-Oakland-Fremont, CA metro area. About 6,531 people live here.
- Population
- 6,531
- Median household income
- $250,001
- Typical home value
- $4,331,200+12% in 12 months
- Median rent
- $3,501gross, per month
- Median age
- 57.2
- Homeowners
- 81.9%of occupied homes
Shaded: ZIP code 94028's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 94028 details
| City | Portola Valley |
|---|---|
| State | California |
| County | San Mateo County (also partly Santa Clara County) |
| Metro area | San Francisco-Oakland-Fremont, CA |
| Time zone | Pacific Time (UTC−8), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 17.3 sq mi, plus 0.1 sq mi of water |
| Population density | 377 people per sq mi |
| Bachelor's degree or higher | 82.9% of adults 25+ |
| Average commute | 17.7 minutes |
| Center coordinates | 37.37488, -122.21268 |
Median rent in 94028 by bedrooms
| Size | Median gross rent |
|---|---|
| 1 bedroom | $3,501/mo |
| 2 bedrooms | $3,501/mo |
| 3 bedrooms | $3,501/mo |
Gross rent includes utilities paid by the tenant. ACS 2020–2024; sizes with too few rentals to estimate are left out.
ZIP codes near 94028
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 94304 | Palo Alto, CA | 2.9 mi | 5,000 |
| 94305 | Stanford, CA | 3.8 mi | 18,509 |
| 94022 | Los Altos, CA | 4.0 mi | 20,027 |
| 94062 | Redwood City, CA | 5.2 mi | 25,759 |
| 94306 | Palo Alto, CA | 5.3 mi | 27,183 |
| 94023 | Los Altos, CA | 5.5 mi | — |
| 94025 | Menlo Park, CA | 5.5 mi | 40,721 |
| 94027 | Atherton, CA | 5.7 mi | 7,002 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Buying a home in 94028?
A typical home in ZIP code 94028 is worth about $4,331,200 (Zillow Home Value Index). The median household here earns $250,001 a year. See what buying here would cost per month, with California average taxes and insurance filled in.
Monthly payment for a $4,331,200 homeWhat can a $250,001 income afford?Rental property numbers
About ZIP code 94028
What city is ZIP code 94028?
ZIP code 94028 is in Portola Valley, CA, in San Mateo County.
What county is ZIP code 94028 in?
94028 is mainly in San Mateo County, California, and partly in Santa Clara County.
What is the population of ZIP code 94028?
About 6,531 people live in ZIP code 94028, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 94028 in?
94028 is in Pacific Time (UTC−8). It observes daylight saving time.