The ZIP Code maps and database are updated 4 times per year. Database updated: March 1, 2026, Maps updated: May 1, 2024.
Advertisement
San Mateo, CA 94404 Data & Demographics
Source: 2020-2024 American Community Survey 5-Year Estimates
POPULATION
Total Population
35,881 (100%)
Population Density
8,249 per sq mi
Diversity Index1
62
INCOME
Median Household Income
$192,332
Per Capita Income
$99,796
Median Home Value
$1,714,400
HOUSING
Total HU (Housing Units)
15,350 (100%)
Owner Occupied HU
7,531 (49.1%)
Renter Occupied HU
7,186 (46.8%)
Vacant Housing Units
633 (4.1%)
HOUSEHOLDS
Total Households
14,717
Average Household Size
2.42
Family Households
9,493 (64.5%)
NOTES
The Diversity Index estimates the likelihood that two persons chosen at random from the same area belong to different race or ethnic groups, based on five groups: Hispanic/Latino, Non-Hispanic White, Non-Hispanic Black, Non-Hispanic Asian, and Non-Hispanic Other/Multiracial. A value of 0 indicates the population belongs entirely to one group. Higher values indicate a more evenly mixed population. Calculated from U.S. Census Bureau ACS 5-year estimates (table B03002).
San Mateo, CA 94404 - Peer Comparisons by Rank and Percentile
The table below compares 94404 to the other 33,772 ZIP Codes in the United States by rank and percentile using 2020-2024 American Community Survey 5-Year Estimates 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.
