ZIP Code 94403, California
ZIP Code 94403 profile, demographic data, and geographic information.
ZCTA5 94403 is a 5-digit ZIP Code area located in San Mateo County, California. As of official census estimates, it has a reported population of 43,276. The land area covers 5.63 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 43,276 | ±1,493 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 38.9 yrs | ±0.9 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 16,414 | ±531 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 17,799 | ±551 |
| Occupied Housing Units | 16,414 | ±531 |
| Vacant Housing Units | 1,385 | ±304 |
| Median Home Value | $1,746,300 | ±$48,183 |
| Median Gross Rent | $3,263 | ±$162 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $174,917 | ±$15,671 |
| Per Capita Income | $88,226 | ±$4,865 |
| Poverty Rate | 6.6% | ±1.2% |
| Population Below Poverty Level | 2,814 | ±537 |
| Unemployment Rate | 5.8% | ±1.4% |
| Civilian Labor Force, Employed | 23,877 | ±1,062 |
| Broadband Internet Rate | 96.7% | ±4.4% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 742,893 (2024)
ID: 123088
|
County | Official County Government |
Contact: DEPUTY COUNTY MANAGER
400 COUNTY CTR, REDWOOD CITY CA 94063-1668
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | KG-05 | Oakland, CA | |
| Regular School Nearby | 06-08 | San Mateo, CA | |
| Alternative School Nearby | 09-12 | San Francisco, CA | |
| Regular School Nearby | KG-05 | Palo Alto, CA | |
| Regular School Nearby | KG-05 | Atherton, CA | |
| Alternative School Nearby | KG-12 | Hayward, CA | |
| Alternative School Nearby | KG-12 | San Leandro, CA | |
| Special Education School Nearby | M | Hayward, CA | |
| Regular School Nearby | KG-05 | San Bruno, CA | |
| Regular School Nearby | M | Castro Valley, CA |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
College of San Mateo
|
College | 1.6 mi away | 1700 W Hillsdale Blvd, San Mateo, CA, 94402-3784 |
6505746161
|
|
HILLSDALE BRANCH LIBRARY
|
Library | 0.3 mi away | 205 W. HILLSDALE BLVD., SAN MATEO, CA, 94403 |
(650) 522-7880
|
|
San Mateo County Community College District Office
|
College | 1.8 mi away | 3401 CSM Drive, San Mateo, CA, 94402 |
6505746550
|
|
MARINA BRANCH LIBRARY
|
Library | 1.4 mi away | 1530 SUSAN COURT, SAN MATEO, CA, 94403 |
(650) 522-7890
|
|
Notre Dame de Namur University
|
College | 1.9 mi away | 1500 Ralston Ave, Belmont, CA, 94002-1908 |
6505083500
|
|
SAN MATEO PUBLIC LIBRARY
|
Library | 2.0 mi away | 55 WEST THIRD AVE., SAN MATEO, CA, 94402 |
(650) 522-7800
|
|
Alder Graduate School of Education
|
College | 5.1 mi away | 2946 Broadway, Redwood City, CA, 94062 |
6503623997
|
|
BELMONT LIBRARY
|
Library | 2.1 mi away | 1110 ALAMEDA DE LAS PULGAS, BELMONT, CA, 94002 |
(833) 937-7625
|
|
Canada College
|
College | 6.6 mi away | 4200 Farm Hill Blvd., Redwood City, CA, 94061-1099 |
6503063100
|
|
FOSTER CITY LIBRARY
|
Library | 2.4 mi away | 1000 E. HILLSDALE BLVD., FOSTER CITY, CA, 94404 |
(833) 937-7625
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at REDWOOD CITY, CA US, located 5.6 miles from ZCTA5 94403. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 58.9° | 40.5° | 49.7° | 3.81" | 0.0" |
| February | 61.9° | 42.5° | 52.2° | 3.65" | 0.0" |
| March | 65.3° | 44.6° | 54.9° | 3.02" | 0.0" |
| April | 68.5° | 46.5° | 57.5° | 1.15" | 0.0" |
| May | 72.9° | 50.4° | 61.6° | 0.46" | 0.0" |
| June | 78.8° | 53.6° | 66.2° | 0.16" | 0.0" |
| July | 81.0° | 56.6° | 68.8° | 0.00" | 0.0" |
| August | 80.8° | 56.5° | 68.7° | 0.04" | 0.0" |
| September | 79.3° | 54.3° | 66.8° | 0.07" | 0.0" |
| October | 74.6° | 49.8° | 62.2° | 0.87" | 0.0" |
| November | 64.7° | 43.9° | 54.3° | 1.87" | 0.0" |
| December | 58.6° | 40.2° | 49.4° | 3.92" | 0.0" |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| San Mateo city | City | 1.5 mi | — |
| Belmont city | City | 1.8 mi | — |
| Baywood Park CDP | CDP | 2.1 mi | — |
| Highlands CDP | CDP | 2.6 mi | — |
| Hillsborough town | Town | 3.2 mi | — |
| San Carlos city | City | 3.4 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 94403. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.