San Mateo is a city in San Mateo County, California, home to about 103,105 people across 12 square miles. Its ZIP codes are 94401, 94402 and 94403, and parts of 94404 are in San Mateo too.
Homes sold for a median of $1,252 per square foot across 3 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
All in San Mateo
Mostly San Mateo; also Highlands and Baywood Park
All in San Mateo
Mostly Foster City; part is in San Mateo
Each card is that ZIP code’s whole market, including any part outside San Mateo. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up San Mateo’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | San Francisco International Airport (SFO)6 miles away |
|---|---|
| Nearest city of 250,000+ | Oakland, CA16 miles away |
| Nearest city of 1 million+ | Los Angeles, CA327 miles away |
Straight-line distances from the center of San Mateo; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
San Mateo had 105,661 residents in the 2020 census, up 14% since 2000.
It’s the 72nd largest of 1,563 towns in California by population.
San Mateo County grew from 12,094 residents in 1900 to 764,442 in 2020.
San Mateo County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 75°F in summer, and winter lows average 45°F. About 19.6 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, San Francisco Intl Ap, CA weather station (6 miles away).
477,938 jobs at 21,569 businesses in San Mateo County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
1,939 doctors and other health care providers list an office in San Mateo’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 125 |
|---|---|
| Specialist doctors | 213 |
| Dentists | 192 |
| Nurse practitioners and physician assistants | 134 |
| Mental health providers | 1,067 |
| Physical and occupational therapists | 102 |
| Optometrists | 39 |
| Chiropractors | 67 |
| Pharmacies | 19 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (54 nearby)
Grocery stores (20 nearby)
Pharmacies (7 nearby)
Libraries (4 nearby)
Museums
Theaters and performance venues (3 nearby)
Counts are within about 2.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by San Mateo-Foster City, San Mateo County Office of Education, San Mateo Union High. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Bayside AcademySan Mateo | K–8 | 840 | Public | 1.3 mi |
| Baywood ElementarySan Mateo | K–5 | 489 | Public | 1.1 mi |
| Beresford ElementarySan Mateo | K–5 | 218 | Public | 0.9 mi |
| College Park ElementarySan Mateo | K–5 | 431 | Public | 1.9 mi |
| Fiesta Gardens International ElementarySan Mateo | K–5 | 418 | Public | 0.6 mi |
| George Hall ElementarySan Mateo | K–5 | 370 | Public | 1.5 mi |
| Highlands ElementarySan Mateo | K–5 | 379 | Public | 2.9 mi |
| Laurel ElementarySan Mateo | K–5 | 469 | Public | 1.4 mi |
| LEAD ElementarySan Mateo | K–5 | 349 | Public | 1.3 mi |
| Meadow Heights ElementarySan Mateo | K–5 | 238 | Public | 0.9 mi |
| North Shoreview MontessoriSan Mateo | K–8 | 325 | Public | 1.7 mi |
| Parkside MontessoriSan Mateo | K–8 | 418 | Public | 1.0 mi |
| San Mateo Park ElementarySan Mateo | K–5 | 340 | Public | 2.1 mi |
| Sunnybrae ElementarySan Mateo | K–5 | 346 | Public | 0.7 mi |
| Hillcrest at Youth Services CenterSan Mateo | 5–12 | 16 | Alternative Education | 3.0 mi |
| Abbott MiddleSan Mateo | 6–8 | 721 | Public | 1.5 mi |
| Borel MiddleSan Mateo | 6–8 | 903 | Public | 0.6 mi |
| Gateway CenterSan Mateo | 6–12 | 11 | Alternative Education | 2.9 mi |
| Margaret J. KempSan Mateo | 7–12 | — | Alternative Education | 3.2 mi |
| Aragon HighSan Mateo | 9–12 | 1,658 | Public | 1.0 mi |
| Hillsdale HighSan Mateo | 9–12 | 1,585 | Public | 1.3 mi |
| San Mateo HighSan Mateo | 9–12 | 1,557 | Public | 2.0 mi |
| The Bridge AcademySan Mateo | 10–12 | 54 | Alternative Education | 2.0 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Centennial Montessori SchoolSan Mateo | Pre-K | 56 | Nonsectarian | 0.6 mi |
| Episcopal Day School of St. MatthewSan Mateo | Pre-K–8 | 290 | Episcopal | 1.3 mi |
| Pacific Rim Int'L SchoolSan Mateo | Pre-K–12 | 23 | Nonsectarian | 1.2 mi |
| The Carey SchoolSan Mateo | Pre-K–5 | 252 | Nonsectarian | 0.6 mi |
| The Nueva SchoolSan Mateo | Pre-K–12 | 950 | Nonsectarian | 0.8 mi |
| Up AcademySan Mateo | Pre-K–6 | 21 | Nonsectarian | 0.3 mi |
| St Timothy SchoolSan Mateo | TK–8 | 152 | Roman Catholic | 1.5 mi |
| Building Kidz SchoolSan Mateo | K | 12 | Nonsectarian | 1.6 mi |
| St Gregory SchoolSan Mateo | K–8 | 297 | Roman Catholic | 0.8 mi |
| St Matthew Catholic SchoolSan Mateo | K–8 | 625 | Roman Catholic | 0.7 mi |
| The Burkard SchoolSan Mateo | 2–8 | 34 | Nonsectarian | 0.5 mi |
| Fusion Academy - San MateoSan Mateo | 6–12 | 37 | Nonsectarian | 0.7 mi |
| Odyssey SchoolSan Mateo | 6–8 | 50 | Nonsectarian | 2.4 mi |
| Jserra Catholic High SchoolSan Mateo | 9–12 | 863 | Roman Catholic | 0.5 mi |
| Junipero Serra High SchoolSan Mateo | 9–12 | 859 | Roman Catholic | 0.5 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Foster City, Highlands and Baywood Park.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.