| ZIP Code | 94027 |
|---|---|
| City | Atherton |
| State | California (CA) |
| County | San Mateo County |
| Area Code | 650 |
| Elevation | 74 ft |
| Latitude | 37.457072 |
|---|---|
| Longitude | -122.201058 |
| Timezone | Los Angeles (DST) |
| FIPS | 06081 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 49.1 yrs ↑ 5% since 2019 |
|---|---|
| Avg Household Size | 2.81 |
| Below Poverty | 3.1% ▼ 69% below avg |
| College Grads | 88.6% ▲ 129% above avg |
| Unemployment | 3.0% ▼ 38% below avg |
| No HS Diploma | 13 (0.3%) |
| HS Graduate | 229 (5.3%) |
| Some College | 58 (1.3%) |
| Associates | 192 (4.5%) |
| Bachelors | 149 (3.5%) |
| Graduate Degree | 3,658 (85.1%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $250,001 ▲ 228% above avg |
|---|---|
| Median Home Value | $2,000,000+ ▲ 617% above avg |
| Home/Income Ratio | 8.0x (nat avg ~3.5x) |
| Median Rent | $3,501/mo |
| Total Units | 2,682 |
| Vacant Units | 407 |
| Avg HH Size | 2.81 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 2,682 |
|---|---|
| Vacant | 407 |
| Owner Occupied | 87.4% |
| Renter Occupied | 12.6% |
| Avg HH Size | 2.81 |
ZIP code 94027 is located in Atherton, California, within San Mateo County. With a population of 7,030, this is a lightly populated ZIP code with a mature community — the median age is 49.1 years. Economically, 94027 is a affluent ZIP code: the median household income of $250,001 is more than double the national average.
Real estate in ZIP code 94027 represents among the most expensive housing markets in the country. The median home value of $2,000,000+ is more than double the national average. Renters can expect to pay around $3,501 per month in median rent. Homeownership is strong here — 87.4% of occupied units are owner-occupied, suggesting an established, stable residential community.
The population of 94027 is majority White (63.71%). Residents are highly educated — 88.6% hold a bachelor's degree or higher, which is more than double the national average. Poverty affects a relatively small share of residents at 3.1%.
The unemployment rate in 94027 stands at 3.0%, which is below the national average. A notably high share of workers — 40% — work from home, reflecting the professional makeup of the area. As in most parts of the country, driving alone is the dominant commute mode at 47%.
Overall, ZIP code 94027 in Atherton, CA is characterized as affluent, highly educated, a mature community, and predominantly owner-occupied. With 7,030 residents, a median household income of $250,001, and a median home value of $2,000,000+, it offers a clear picture of life in this part of California.