Atherton, CA 94027 ZIP Code Profile

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

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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
  • Businesses Addresses: 55
  • Single Family Addresses: 2,452
  • Multi-Family Addresses: 37
  • County: San Mateo County
  • Centroid: Latitude 37.456, Longitude -122.204
  • Time Zone: Pacific Time Zone (UTC -8 hours)
  • Observes DST: Yes

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


94027 ZIP Code Map

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Atherton, CA 94027 Data & Demographics (As of July 1, 2017)


Total Population 7,230
Daytime Population: Workers 1,737
Daytime Population: Residents 4,420
Total Daytime Population (TDP) 6,157
Ratio TDP/Total Population1 0.85
Population in Households 6,833
Population in Familes 6,049
Population in Group Qrtrs 397
Population Density2 1,453
Diversity Index3 45


Median Household Income $200,001
Average Household Income $297,732
Per Capita Income $103,131


Total Housing Units 2,655 (100%)
Owner Occupied HU 2,180 (82.1%)
Renter Occupied HU 267 (10.1%)
Vacant Housing Units 208 ( 7.8%)
Median Home Value $1,000,001
Average Home Value $1,218,062


Total Households 2,447
Average Household Size 2.79
Family Households 1,996
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 0.43% 0.5%
Households 0.4% 0.47%
Families 0.41% 0.47%
Median Household Income   0.0%
Per Capita Income   1.2%

Atherton, CA 94027 - Peer Comparisons by Rank and Percentile

The table below compares 94027 to the other 1,761 ZIP Codes in California by rank and percentile using July 1, 2017 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 # 1078 39th
Population Density # 772 56th
Diversity Index # 1384 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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