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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

Zip Code 94027, Atherton, CA

ZIP Code 94027 Details

Zip Code:94027
State:CA [California]
Counties:SAN MATEO, CA
Multi County:No
City Alias(es):Atherton
Menlo Park
Area Code:650
City Type:N [Non Postal Community Name]
Classification: [Non-Unique]
Time Zone:Pacific (GMT -08:00)
Observes Daylight Saving:Yes
Elevation:74 ft
State FIPS:06
County FIPS:081
Intro Date:<2004-10

ZIP Code 94027 2010 Census Demographics

Current Population:7,219
2010 Population:7,089
Households per ZIP Code:2,412
Average House Value:$2,000,000
Avg. Income Per Household:$250,000
Persons Per Household:2.78
White Population:5,913
Black Population:88
Hispanic Population:281
Asian Population:1,112
American Indian Population:35
Hawaiian Population:53
Other Population:121
Male Population:3,472
Female Population:3,617
Median Age:48.30 years
Male Median Age:47.60 years
Female Median Age:48.80 years

ZIP Code 94027 Other Demographics

# Residential Mailboxes:2,597
# Business Mailboxes:61
Total Delivery Receptacles:2,658
Number of Businesses:155
1st Quarter Payroll:$28,676,000
Annual Payroll:$113,749,000
# of Employees:1,670
Water Area:0.032 sq mi
Land Area:5.193 sq mi
113th Congressional District:18
113th Congressional Land Area:696.12 sq mi
Single Family Delivery Units:2,542
Multi Family Delivery Units:39
# Residential Mailboxes:2,597
# Business Mailboxes:61
Total Delivery Receptacles:2,658

ZIP Code 94027 Social Security Benefits

  2018 2019 Delta
Total Beneficiaries: 1,400 1,410 +10
Retired Workers: 1,070 1,075 +5
Disabled Workers: 20 20 0
Widow(er)s and Parents: 95 95 0
Spouses: 190 190 0
Children: 25 30 +5
65+: 1,335 1,355 +20
Monthly Benefits - All: $2,726,000 $2,862,000 +$136,000
Monthly Benefits - Retired Workers: $2,266,000 $2,387,000 +$121,000
Monthly Benefits - Widow(ers): $192,000 $199,000 +$7,000

ZIP Code 94027 Statistical Areas

CBSA: 41860
CBSA Name: San Francisco-Oakland-Berkeley, CA
CBSA Type: Metro
CBSA Division: 41884
CBSA Division Name: San Francisco-San Mateo-Redwood City, CA
CBSA Population:4,335,391
CBSA Division Population:1,523,686
MSA: 7362
MSA Name: San Francisco-Oakland-San Jose, CA CMSA
PMSA: 7360
PMSA Name: San Francisco, CA PMSA
City State Key:009890
Preferred Last Line Key:009890
94026: Previous ZIP Code
Next ZIP Code: 94028


  1. U.S. Postal Service [Last Updated: 5/1/2022],
  2. Internal Data Creation [Last Updated: 5/1/2022],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census American National Standards Institute (ANSI) [Last Updated: 5/1/2022],
  6. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],
  7. Centers for Medicare & Medicaid Services [Updated Yearly],