ZIP code 94028
Where is ZIP code 94028?
Portola Valley, California
San Mateo County · Standard ZIP code
ZIP code 94028 belongs to Portola Valley, California in San Mateo County. 94028 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Pacific Time zone and uses area code 650. About 6,531 people live in the 94028 area, where the median household income is $250,001. The closest ZIP codes are 94304 (Palo Alto, 4.7 mi northeast), 94305 (Stanford, 4.8 mi northeast) and 94025 (Menlo Park, 5.1 mi north).
| ZIP code | 94028 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Portola Valley |
| Also accepted | Menlo Park, Portola Vally |
| State | California (CA) |
| County | San Mateo County |
| Time zone | Pacific Time · now |
| Area code | 650 |
| Coordinates | 37.3702, -122.2182 map |
| 3-digit prefix | 940 |
Population and income in 94028
| Population | 6,531 · lower than 62% of California ZIP codes |
|---|---|
| People per square mile | 377 · lower than 57% of California ZIP codes |
| Median age | 57.2 years · higher than 90% of California ZIP codes |
| Men / women | 51% / 50% |
| Median household income | $250,001 · higher than 99% of California ZIP codes |
| Income per person | $175,395 |
| Below the poverty line | 4.4% |
| Bachelor’s degree or higher | 83% of adults 25+ |
| Median home value | $2,000,001 · higher than 98% of California ZIP codes |
| Median rent | $3,501 a month |
| Housing units | 2,808 |
| Households | 2,637 (2.45 people on average) |
| Owners / renters | 82% / 18% |
| Land area | 17.32 sq mi (plus 0.09 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 94028. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 94028
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 94304 | Palo Alto, CA | 4.7 mi NE | Standard |
| 94305 | Stanford, CA | 4.8 mi NE | Standard |
| 94025 | Menlo Park, CA | 5.1 mi N | Standard |
| 94022 | Los Altos, CA | 5.1 mi E | Standard |
| 94062 | Redwood City, CA | 5.7 mi NW | Standard |
| 94023 | Los Altos, CA | 5.8 mi E | PO Box only |
| 94306 | Palo Alto, CA | 6 mi NE | Standard |
| 94027 | Atherton, CA | 6 mi N | Standard |
| 94301 | Palo Alto, CA | 6.4 mi NE | Standard |
| 94026 | Menlo Park, CA | 6.4 mi W | PO Box only |
| 94064 | Redwood City, CA | 6.4 mi W | PO Box only |
| 94302 | Palo Alto, CA | 6.4 mi NE | PO Box only |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 94028 or measure the distance to another ZIP code.
How to address mail to 94028
123 MAIN ST
PORTOLA VALLEY CA 94028
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts MENLO PARK and PORTOLA VALLY as the city name for 94028. Avoid Menlo Pk: USPS doesn’t recognize it as the city for this ZIP code. Adding the 4-digit ZIP+4 code (94028-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 94028?
- 94028 is a Portola Valley, California ZIP code. Menlo Park and Portola Vally are also accepted as the city name.
- What county is 94028 in?
- ZIP code 94028 is in San Mateo County, California.
- What time zone is ZIP code 94028 in?
- 94028 is in the Pacific Time zone (America/Los_Angeles).
- What area code is 94028?
- Phone numbers in ZIP code 94028 use area code 650.
- What is the population of ZIP code 94028?
- About 6,531 people live in ZIP code 94028, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 94028?
- The median household income in 94028 is $250,001 a year, higher than 99% of California ZIP codes.
- What ZIP codes are near 94028?
- The nearest ZIP codes to 94028 are 94304 (Palo Alto, 4.7 miles), 94305 (Stanford, 4.8 miles), 94025 (Menlo Park, 5.1 miles) and 94022 (Los Altos, 5.1 miles).