Zip Code 94027: Atherton, California Geographic Directory
ZIP Code 94027 covers the Town of Atherton in San Mateo County, on the Peninsula in the heart of Silicon Valley. The town spans roughly five square miles and is bordered by Menlo Park, Redwood City, Woodside, and the unincorporated North Fair Oaks area. It is residential almost entirely, with large lots, mature oaks, and very little commercial development. Atherton routinely ranks among the most expensive ZIP Codes in the United States, driven by venture capital, technology leadership, and long-held family wealth.
Data Verification Segment: The figures below are working estimates aligned with 2026 Northern California wealth and housing indicators and are reviewed periodically for accuracy. Real estate values and rents in this ZIP Code can shift quickly, so each metric should be confirmed against the official sources listed in the summary. This directory is informational and is not an appraisal, legal advice, or a financial recommendation.
94027 Tech Executive Housing Indices
| Metric | Estimate | Notes |
|---|---|---|
| Median Estate Value | ~$8.3 million | Large-lot single-family estates; many sales exceed $15M. |
| Average Tech Executive Rent | ~$20,000–$40,000+/month | Furnished or short-term leases price higher; inventory is thin. |
| Silicon Valley Cost of Living Scale | Among the highest in the U.S. (roughly 3x national average for housing) | Housing is the dominant driver. |
| Local School Zones | Menlo Park City SD, Las Lomitas ESD, Redwood City SD (parts), Sequoia Union HSD | Zone depends on exact address; verify with districts. |
Living in 94027: Extended Analysis
Elite Education & Silicon Valley School Districts
Education is a major reason families choose Atherton. Depending on the street, children may be zoned to the Menlo Park City School District or the Las Lomitas Elementary School District, both highly regarded. A smaller portion falls within Redwood City School District boundaries. High school students are generally served by Menlo-Atherton High School in the Sequoia Union High School District. The area also hosts prestigious independent schools such as Menlo School and nearby Sacred Heart Schools, and Stanford University is a short drive away. Because boundaries follow addresses rather than ZIP Codes, buyers should confirm assignments directly with each district before committing.
Privacy Infrastructure, Low Crime Rates & Security
Atherton is known for privacy. Properties sit behind hedges, gates, and long driveways, and the town has no downtown retail core to draw outside traffic. The Atherton Police Department patrols the town and is widely noted for rapid response and a visible presence. Violent crime is historically very low, though residential burglary has been a recurring concern across the Peninsula, so many homeowners add private alarm monitoring, camera systems, and perimeter lighting. Underground utilities and strict zoning contribute to the quiet, secluded character.
Tech Hub Commuting, Caltrain & Accessibility
Atherton's location puts it within minutes of Meta in Menlo Park, Stanford, Sand Hill Road venture firms, and downtown Palo Alto. Highway 101 and Interstate 280 are both close, and El Camino Real runs along the edge of town. The town's own Caltrain station no longer has regular service, so riders typically use the Menlo Park or Redwood City stations. San Francisco International and San Jose Mineta airports are each roughly 20 to 30 minutes away outside peak traffic, which is attractive for executives who travel frequently.
Ultra-High-Net-Worth Lifestyle & Estates Scale
Typical Atherton estates sit on lots of one acre or more, with main residences, guest houses, pools, sport courts, and orchards. Many homes are custom builds or major renovations designed with discretion and long-term family use in mind. Social life centers on private clubs such as Menlo Circus Club, philanthropic events, and nearby dining in Menlo Park and Palo Alto. Strict building rules, high property taxes on recent purchases, and very limited inventory mean transactions are often off-market or quietly negotiated.
94027 vs. Neighboring Silicon Valley ZIP Codes
| Factor | 94027 Atherton | 94025 Menlo Park | 94301 Palo Alto |
|---|---|---|---|
| Character | Estate-scale, residential only | Mixed: downtown, suburban, tech campuses | Walkable; Professorville, near Stanford |
| Typical Lot Size | Often 1+ acre | Smaller suburban lots | Small to mid-size lots |
| Price Level | Highest of the three | High | Very high |
| Retail & Dining | Minimal | Good variety | Extensive |
| Transit | Car-oriented | Caltrain access | Caltrain and bike-friendly |
Buyers who want maximum privacy and acreage lean toward 94027. Those who value walkability and amenities tend to prefer Menlo Park or Palo Alto.
Summary & Official Sources
ZIP Code 94027 is one of the nation's most exclusive residential addresses, combining top-rated schools, strong privacy, and fast access to Silicon Valley employers. Its trade-offs are very high housing costs, limited inventory, and a car-dependent lifestyle. For verification, consult the U.S. Census Bureau (American Community Survey) for demographics and income, the San Mateo County Assessor-County Clerk-Recorder for property records, the Town of Atherton for zoning and permits, and the Atherton Police Department for public safety information. Utility details come from PG&E (electricity and gas) and the local water provider, such as Cal Water or Menlo Park Municipal Water, depending on address. School data should be checked with each district and the California Department of Education.
94027 Executive Budget Calculator
Disclaimer: Figures are estimates for general information only. Verify all data with official sources before making housing decisions. © California For You (californiu.com)
