San Mateo County property tax
Homeowners in San Mateo County, California typically pay about 0.61% of their home's value in property tax each year — a median bill of $9,519 on a median home value of $1,559,600.
Typical effective rate
0.61%
higher than 71% of U.S. counties
Median tax paid
$9,519
per year
Median home value
$1,559,600
In CA
#57
of 58 ranked counties
At a glance
- Effective rate 0.61% — 35% lower than the U.S. median of 0.94%, and 12% lower than the California median of 0.70%.
- With vs. without a mortgage — median tax $10,001 for mortgaged homes, $6,502 for homes owned outright.
- State ranking — 57th highest effective rate of 58 ranked California counties; nationally it sits around the 29th percentile.
Estimate a bill for San Mateo County
Apply this county's typical effective rate (0.61%) to a home value of your choice.
Frequently asked questions
What is the property tax rate in San Mateo County, CA?
The typical effective property-tax rate in San Mateo County is 0.61% of a home's value per year, based on median taxes paid ($9,519) divided by the median home value ($1,559,600) in the Census ACS 2020–2024 5-year estimates. This is a typical burden for comparison, not a statutory mill rate.
How much is property tax on a typical home in San Mateo County?
The median owner-occupied home in San Mateo County is valued at $1,559,600, and the median real estate tax paid is $9,519 per year. Homes with a mortgage have a median tax of $10,001, versus $6,502 for homes without one.
How does San Mateo County compare to the rest of California?
San Mateo County's effective rate is 12% lower than the California median, ranking 57th of 58 ranked counties in the state.
Compare nearby California counties
Counties ranked closest to San Mateo County by in-state effective rate. Open the comparison tool or see all California counties.
| In-state | County | Effective rate | Median tax |
|---|---|---|---|
| 52 | Monterey County | 0.63% | $4,910 |
| 53 | Tehama County | 0.62% | $2,118 |
| 54 | Colusa County | 0.62% | $2,426 |
| 55 | Del Norte County | 0.61% | $2,099 |
| 56 | Mariposa County | 0.61% | $2,377 |
| 58 | Trinity County | 0.58% | $1,888 |
Official data & resources for San Mateo County
- San Mateo County Census profile (data.census.gov) — housing, value and tax figures for this county.
- Table B25103 for San Mateo County — median real estate taxes paid (the source for the tax figures above).
- Table B25077 for San Mateo County — median home value.
- Federal forms & is property tax deductible? — IRS Pub 530, Schedule A and the SALT cap, plus your state tax agency.
Finding your exact bill
Your county or municipal assessor (sometimes called the appraisal district, property appraiser, or tax collector) sets the assessed value and the exact millage that produces your bill. Search for "[county name] [state] assessor" or "property tax" on an official .gov site.
Figures on this page are Census survey medians for the whole county (2020–2024 5-year), not an assessment of any individual property. Rates, exemptions and assessment practices vary by municipality and school district within a county.