ZIP Code 94403: San Mateo, California
San Mateo, CA uses ZIP code 94403, which falls within San Mateo County, California. Its reference point is at latitude 37.5395 and longitude -122.2998 (37°32'22.2"N 122°17'59.3"W).
Location Overview of ZIP Code 94403
San Mateo, CA has 9 ZIP codes in our directory. Besides 94403, they include 94401, 94402, 94404, 94405, 94407, 94408, 94409, 94497.
Across San Mateo County there are 55 ZIP codes listed, and California has 2,792 in total.
The nearest listed ZIP code is 94497 in San Mateo, CA, about 1.5 mi to the west.
| ZIP code | 94403 |
|---|---|
| City | San Mateo |
| County | San Mateo County |
| State | California (CA) |
| Latitude | 37.5395 |
| Longitude | -122.2998 |
| DMS | 37°32'22.2"N 122°17'59.3"W |
| Nearest ZIP | 94497 (San Mateo, 1.5 mi) |
Map of ZIP Code 94403
Map centered on 37.5395, -122.2998. The pin marks the ZIP code's reference point, not its boundary.
Video: San Mateo, CA
Top 10 Best Things to Do in San Mateo, California - Travel Guide 2025 — by DoTravel · Watch on YouTube
ZIP Codes Near 94403
These 15 ZIP codes have the closest reference points to 94403, measured in a straight line.
Nearby Cities and Towns
The closest communities to ZIP code 94403, measured in a straight line from its reference point, are Belmont, CA (1.6 mi south), Redwood City, CA (2.8 mi east) and San Carlos, CA (3.4 mi southeast). Distances are approximate and road distances will be longer.
- Belmont, CA – 1.6 mi south
- Redwood City, CA – 2.8 mi east
- San Carlos, CA – 3.4 mi southeast
- Burlingame, CA – 4.2 mi northwest
- Millbrae, CA – 7.0 mi northwest
- San Francisco, CA – 7.6 mi northwest
- Atherton, CA – 7.9 mi southeast
- Half Moon Bay, CA – 9.0 mi southwest
Schools Near San Mateo, CA
Public school assignments in the United States are based on street address, so families in ZIP code 94403 should confirm their assigned school with the school district that serves San Mateo and San Mateo County.
Searching nearby communities such as Belmont and Redwood City can widen the list of public, private and charter options. The links below open live Google Maps results centered on 94403.
Parks and Outdoor Recreation
Parks, trails and playgrounds around San Mateo, CA are easiest to find on the map above or with the searches below, which are centered on ZIP code 94403.
Hospitals and Healthcare
Hospitals, urgent care clinics and pharmacies serving San Mateo, CA can be found with the searches below. In a medical emergency, call 911.
Residents of ZIP code 94403 may also use facilities in nearby Belmont, Redwood City and San Carlos.
Shopping and Dining in San Mateo
Restaurants, grocery stores and shopping centers in and around ZIP code 94403 are listed in the Google Maps searches below, with current hours and reviews.
Libraries and Historical Places
Public libraries, museums and historic sites near San Mateo, California can be found with the searches below, which are centered on ZIP code 94403.
To research local history, try searching for San Mateo County records and archives along with the name San Mateo.
Roads, Rivers and Lakes
From ZIP code 94403, Belmont lies about 1.6 mi to the south, Redwood City lies about 2.8 mi to the east, San Carlos lies about 3.4 mi to the southeast, Burlingame lies about 4.2 mi to the northwest and Millbrae lies about 7.0 mi to the northwest. Use the directions link for turn-by-turn routes and road names.
Rivers, lakes and other water features near San Mateo show up on the map above, or you can search for them directly.
Frequently Asked Questions About ZIP Code 94403
Photo & Video Credits
- Video: “Top 10 Best Things to Do in San Mateo, California - Travel Guide 2025” by DoTravel, embedded from YouTube. All rights belong to the creator.
Data for ZIP code 94403 comes from a public U.S. postal code dataset and is provided for general reference. Always confirm mailing details with the U.S. Postal Service.