ZIP code
94404
San Mateo, CA
94404 covers San Mateo in San Mateo County, with 35,950 people in the ACS 2023 estimate.
Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 94404. Methodology
ZIP code map of 94404

About ZIP code 94404
Acceptable cities: Foster City
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 94404. Not ACS. Methodology
People in 94404
Race
- White12,746
- Black or African American579
- American Indian or Alaska Native81
- Asian19,402
- Native Hawaiian and Pacific Islander210
- Other race1,096
- Two or more races3,209
Hispanic or Latino (any race): 2,809
Age
- Under 104,444
- 10 to 193,885
- 20 to 293,890
- 30 to 396,753
- 40 to 495,575
- 50 to 594,384
- 60 to 693,615
- 70 to 793,036
- 80 and older1,741
Income and housing in 94404
Education
- High school graduate95.9%
- Bachelor's degree74.5%
- Graduate degree39.4%
Places covering 94404
Cities and places — Population overlap
Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
- Foster City90.6%
- San Mateo9.4%
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Counties — Population overlap
Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- San Mateo County100.0%
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Population history for 94404
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 32,417 | |
| 2006 | 31,555 | |
| 2007 | 32,813 | |
| 2008 | 32,267 | |
| 2009 | 32,344 | |
| 2010 | 32,435 | |
| 2011 | 32,986 | 32,753 |
| 2012 | 33,792 | 33,080 |
| 2013 | 34,431 | 33,500 |
| 2014 | 35,045 | 33,640 |
| 2015 | 35,492 | 33,640 |
| 2016 | 36,086 | 33,520 |
| 2017 | 36,573 | 33,890 |
| 2018 | 36,905 | 34,310 |
| 2019 | 36,985 | 34,020 |
| 2020 | 36,086 | 32,890 |
| 2021 | 36,571 | 32,250 |
| 2022 | 36,397 | 32,290 |
| 2023 | 35,950 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 94404
12 nearest ZIP centroids (any distance)
- 94065Redwood City1.8 miPop 11,620 · Income $213,361
- 94403San Mateo2.4 miPop 43,459 · Income $179,825
- 94401San Mateo3.2 miPop 35,628 · Income $121,258
- 94002Belmont3.3 miPop 27,730 · Income $204,573
- 94402San Mateo3.6 miPop 25,498 · Income $179,683
- 94070San Carlos4.1 miPop 30,696 · Income $235,373
- 94063Redwood City5.9 miPop 34,695 · Income $115,528
- 94010Burlingame6.0 miPop 42,794 · Income $191,758
- 94061Redwood City6.8 miPop 37,369 · Income $141,599
- 94027Atherton7.7 miPop 7,030 · Income $250,000+
- 94128San Francisco7.8 miPop 0 · Income —
- 94030Millbrae8.0 miPop 22,589 · Income $157,567
ZIP centroids within 2 miles
| ZIP | City | State | Distance (miles) | ACS population | Median income |
|---|---|---|---|---|---|
| 94065 | Redwood City | CA | 1.8 mi | 11,620 | $213,361 |
ZIPs within 2 miles of this place
Default is 2 miles. Distances are between ZIP centroids. Widen the radius if nothing is in range.
ZIP code 94404 FAQ
- What city is ZIP code 94404 in?
- 94404 is in San Mateo, CA.
- What county is 94404 in?
- 94404 is in San Mateo County.
- What is the median household income in 94404?
- The median household income in 94404 is $182,417.
- Which ZIP codes are near 94404?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 94404.