Atherton, CA 94027 ZIP Code Profile

Related Place Profiles:
Atherton, CA | Menlo Park, CA

ZIP Code 94027: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Atherton, CA 94027

Acceptable Alternative
Menlo Park, CA 94027

  • ZIP Code Type: STANDARD
  • County: San Mateo County
  • Centroid: Latitude 37.456, Longitude -122.204
  • Time Zone: Pacific Time Zone (UTC -8 hours)
  • Observes DST: Yes
  • Businesses Addresses: 53
  • PO Box Addresses: 0
  • Residential Addresses: 2,486
    • Multi-Family Addresses: 37
    • Single Family Addresses: 2,449

The ZIP Code maps and database are updated 4 times per year.
Database updated: August 1, 2018, Maps updated: August 1, 2018.

EXTREMELY LOCAL Demographic Data

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94027 ZIP Code Map

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Atherton, CA 94027 Data & Demographics (As of July 1, 2018)


Total Population 7,027
Population in Households 6,639
Population in Familes 5,912
Population in Group Qrtrs 388
Population Density2 1,410
Diversity Index3 45


Median Household Income $200,001
Average Household Income $302,062
Per Capita Income $104,731


Total Housing Units 2,602 (100%)
Owner Occupied HU 2,142 (82.3%)
Renter Occupied HU 239 ( 9.2%)
Vacant Housing Units 221 ( 8.5%)
Median Home Value $2,000,001
Average Home Value $2,112,862


Total Households 2,381
Average Household Size 2.79
Family Households 1,949
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.1% 0.13%
Households 0.09% 0.1%
Families 0.12% 0.12%
Median Household Income   0.0%
Per Capita Income   1.72%

Atherton, CA 94027 - Peer Comparisons by Rank and Percentile

The table below compares 94027 to the other 1,763 ZIP Codes in California by rank and percentile using July 1, 2018 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 1080 39th
Population Density # 768 56th
Diversity Index # 1390 21st
Median Household Income # 1 100th
Per Capita Income # 7 100th

Additional comparisons and rankings can be made with a VERY EASY TO USE California Census Data Comparison Tool.

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