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ZIP Code 94027
Atherton, CA, San Mateo County
Population
7,002
Land area
5sq mi
People per sq mi
1,393
City
Atherton
ZIP 94027 and nearby ZIP codes
ZIP 94027 at a glance
- ZIP 94027 (Atherton) is about 5.5 times as dense as 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 94027
Counts from official public data
Housing and community stats
ZIP 94027, American Community Survey 2020-2024
Median household income
$250,000+
Poverty rate
5.3%
Median home value
$2,000,000+
Prices +7.5% in a year
Median rent
$3,500+/mo
Homeownership
87.6%
Bachelor's or higher
83.2%
Median age
49.1
Average commute
23.1 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
180
ZIP Business Patterns 2023
Employees
1,883
$168M annual payroll
PPP loans
$14.6M
138 loans
Campaign donations
$17.7M
25% D, 3% R, 2026 cycle
Environment and hazard risk
ZIP 94027, 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
81° / 41°F
19.0 inches of rain a year
Health statistics
Share of adults in ZIP 94027, CDC PLACES estimates
Obesity
19.6%
U.S. 33.3% -13.7 pts
Diabetes
8.8%
U.S. 12.1% -3.3 pts
Smoking
5.2%
U.S. 12.8% -7.6 pts
Uninsured (18-64)
3.0%
U.S. 11.1% -8.1 pts
Frequently asked questions
- What city is ZIP code 94027?
- ZIP code 94027 is in Atherton, CA (San Mateo County).
- What county is ZIP code 94027 in?
- ZIP code 94027 is mostly in San Mateo County, California.
- How many people live in ZIP code 94027?
- About 7,002 people live in the 94027 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.