ZIP code 94403
Where is ZIP code 94403?
San Mateo, California
San Mateo County · Standard ZIP code
ZIP code 94403 belongs to San Mateo, California in San Mateo County. 94403 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Pacific Time zone and uses area code 650. About 43,276 people live in the 94403 area, where the median household income is $174,917. The closest ZIP codes are 94497 (San Mateo, 1.5 mi west), 94002 (Belmont, 1.6 mi south) and 94402 (San Mateo, 1.7 mi northwest).
| ZIP code | 94403 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | San Mateo |
| State | California (CA) |
| County | San Mateo County |
| Time zone | Pacific Time · now |
| Area code | 650 |
| Coordinates | 37.5395, -122.2998 map |
| 3-digit prefix | 944 |
Population and income in 94403
| Population | 43,276 · higher than 81% of California ZIP codes |
|---|---|
| People per square mile | 7,683 · higher than 85% of California ZIP codes |
| Median age | 38.9 years · lower than 56% of California ZIP codes |
| Men / women | 50% / 50% |
| Median household income | $174,917 · higher than 93% of California ZIP codes |
| Income per person | $88,226 |
| Below the poverty line | 6.6% |
| Bachelor’s degree or higher | 61% of adults 25+ |
| Median home value | $1,746,300 · higher than 94% of California ZIP codes |
| Median rent | $3,263 a month |
| Housing units | 17,799 |
| Households | 16,414 (2.59 people on average) |
| Owners / renters | 53% / 48% |
| Land area | 5.63 sq mi (plus 0.16 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 94403. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 94403
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 94497 | San Mateo, CA | 1.5 mi W | Unique |
| 94002 | Belmont, CA | 1.6 mi S | Standard |
| 94402 | San Mateo, CA | 1.7 mi NW | Standard |
| 94404 | San Mateo, CA | 1.9 mi NE | Standard |
| 94401 | San Mateo, CA | 2.7 mi NW | Standard |
| 94065 | Redwood City, CA | 2.8 mi E | Standard |
| 94070 | San Carlos, CA | 3.4 mi SE | Standard |
| 94010 | Burlingame, CA | 4.2 mi NW | Standard |
| 94011 | Burlingame, CA | 4.8 mi NW | PO Box only |
| 94063 | Redwood City, CA | 6.4 mi SE | Standard |
| 94061 | Redwood City, CA | 6.4 mi SE | Standard |
| 94030 | Millbrae, CA | 7 mi NW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 94403 or measure the distance to another ZIP code.
How to address mail to 94403
123 MAIN ST
SAN MATEO CA 94403
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (94403-XXXX) helps mail sort faster but isn’t required.
Other ZIP codes in San Mateo, CA
All San Mateo ZIP codes with population and income →
Questions
- What city is ZIP code 94403?
- 94403 is a San Mateo, California ZIP code.
- What county is 94403 in?
- ZIP code 94403 is in San Mateo County, California.
- What time zone is ZIP code 94403 in?
- 94403 is in the Pacific Time zone (America/Los_Angeles).
- What area code is 94403?
- Phone numbers in ZIP code 94403 use area code 650.
- What is the population of ZIP code 94403?
- About 43,276 people live in ZIP code 94403, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 94403?
- The median household income in 94403 is $174,917 a year, higher than 93% of California ZIP codes.
- What ZIP codes are near 94403?
- The nearest ZIP codes to 94403 are 94497 (San Mateo, 1.5 miles), 94002 (Belmont, 1.6 miles), 94402 (San Mateo, 1.7 miles) and 94404 (San Mateo, 1.9 miles).