Zip Code Database List
Account Login
Find ZIP+4 of Address

Find the ZIP Code, County, and +4 of any U.S. Address

FREE ZIP Code Finder

Find info on any U.S. ZIP Code

Other FREE Lookups

Lookup ZIP Code of any City, State, County or Area Code

FREE Radius Search

Find all ZIP Codes

FREE Distance Calc

Calculate the distance between two U.S. or Canadian ZIP codes.

ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

Zip Code 94552, Castro Valley, CA

ZIP Code 94552 Details

Zip Code:94552
City:Castro Valley
State:CA [California]
Counties:ALAMEDA, CA
Multi County:No
City Alias(es):Castro Valley
Area Code:510 / 341
City Type:B [Branch]
Classification: [Non-Unique]
Time Zone:Pacific (GMT -08:00)
Observes Daylight Saving:Yes
Elevation:894 ft
State FIPS:06
County FIPS:001
Intro Date:<2004-10

ZIP Code 94552 2010 Census Demographics

Current Population:14,790
2010 Population:14,454
Households per ZIP Code:4,918
Average House Value:$1,020,700
Avg. Income Per Household:$180,681
Persons Per Household:2.93
White Population:7,983
Black Population:740
Hispanic Population:1,367
Asian Population:5,919
American Indian Population:131
Hawaiian Population:159
Other Population:424
Male Population:7,026
Female Population:7,428
Median Age:43.30 years
Male Median Age:43.20 years
Female Median Age:43.30 years

ZIP Code 94552 Other Demographics

# Residential Mailboxes:5,048
# Business Mailboxes:85
Total Delivery Receptacles:8,595
Number of Businesses:184
1st Quarter Payroll:$9,899,000
Annual Payroll:$44,123,000
# of Employees:991
Water Area:0.021 sq mi
Land Area:45.036 sq mi
113th Congressional District:15
113th Congressional Land Area:599.45 sq mi
Single Family Delivery Units:4,383
Multi Family Delivery Units:239
# Residential Mailboxes:5,048
# Business Mailboxes:85
Total Delivery Receptacles:8,595

ZIP Code 94552 Social Security Benefits

  2018 2019 Delta
Total Beneficiaries: 2,455 2,540 +85
Retired Workers: 1,945 2,030 +85
Disabled Workers: 150 150 0
Widow(er)s and Parents: 120 115 -5
Spouses: 145 145 0
Children: 95 100 +5
65+: 2,105 2,190 +85
Monthly Benefits - All: $3,967,000 $4,253,000 +$286,000
Monthly Benefits - Retired Workers: $3,317,000 $3,595,000 +$278,000
Monthly Benefits - Widow(ers): $192,000 $181,000 ($11,000)

ZIP Code 94552 Statistical Areas

CBSA: 41860
CBSA Name: San Francisco-Oakland-Berkeley, CA
CBSA Type: Metro
CBSA Division: 36084
CBSA Division Name: Oakland-Berkeley-Livermore, CA
CBSA Population:4,335,391
CBSA Division Population:2,559,296
MSA: 7362
MSA Name: San Francisco-Oakland-San Jose, CA CMSA
PMSA: 5775
PMSA Name: Oakland, CA PMSA
City State Key:Z20540
Preferred Last Line Key:Z20540
94551: Previous ZIP Code
Next ZIP Code: 94553


  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],