San Geronimo, Marin County, California Property Taxes
Property Taxes in San Geronimo, California
Median San Geronimo, California effective property tax rate: 1.22%, significantly higher than the national median of 1.02%, and slightly higher than the California state median of 1.21%.
Median San Geronimo, California home value: $828,483
Median annual San Geronimo, California tax bill: $9,674, $7,274 higher than the national median property tax bill of $2,400.
How are property taxes in Marin calculated?
Property taxes in San Geronimo, California are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding San Geronimo's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in San Geronimo, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
San Geronimo, Marin County, California Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.22%
Estimate Property Tax Bill
$10,107
$9,379
How Does the San Geronimo Property Tax Calculator Work?
Use this San Geronimo property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies San Geronimo's median effective tax rate of 1.22% — based on actual property records in Marin County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local assessment process uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies San Geronimo's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.
Your bill may vary by ZIP code within San Geronimo: rates range from 94963 to 94963, with a median property tax bill of $9,674. San Geronimo's tax rate is higher than the 1.21% state median tax rate, and the median bill is $7,274 higher than the state median tax bill.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across San Geronimo.
About San Geronimo Property Taxes
About Property Taxes in San Geronimo, Marin, California
San Geronimo’s median effective property tax rate of 1.22% is higher than the California state median of 1.21% and higher than the national median of 1.02%. This rate reflects Marin County’s assessed property tax structure, where local levies can push bills well above the national norm.
Property taxes are not uniform across San Geronimo. In the 94963 ZIP code, the median effective rate is 1.22%, and the median tax bill is $9,674. That is far above the national median property tax bill of $2,400 and also above the California state median bill by $7,274. Understanding how your property is assessed in Marin County can make a meaningful difference to your annual tax bill.
Homeowners who believe their assessed value is too high can file a formal appeal with the Marin County Tax Assessor before the December 1, 2026 deadline.
If your estimated bill seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.
Property Tax Rates Across San Geronimo, Marin County, California
As noted earlier, local government entities set tax rates, which can vary widely within a state.
Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.
While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.
Below, you can compare San Geronimo's effective property tax rate to other cities in California and the median property tax rates in California and the U.S.
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective San Geronimo Tax Rate
1.22%
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Marin County Tax Rate
1.39%
Median Effective California Tax Rate
1.21%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across San Geronimo, Marin County, California
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 94963 | 1.11% | 1.16% | 1.22% | 1.34% | 1.52% |
Source: Ownwell
Property Tax Assessment Values Across San Geronimo, Marin County, California
When examining property taxes in San Geronimo, California, understanding the distinction between market value and assessed value is crucial.
The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Marin County appraisal district estimates the market value for tax purposes.
The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
Assessment notices:
In Marin County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of the month.
Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. For example, the median home price in San Geronimo is $828,483, with tax bills ranging significantly across the county. ZIP code 94963 has the highest median home price at $828,483.
Property Tax Assessment Values Across San Geronimo, Marin County, California
Source: Ownwell
$430,892
$1,472,162
$2,513,431
Median San Geronimo Market Value
$828,483
Median Marin County Market Value
$841,979
Median California Market Value
$427,605
Median United States Market Value
$235,294
Property Tax Assessment Values Across San Geronimo, Marin County, California
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 94963 | $265,705 | $469,508 | $828,483 | $1,293,491 | $1,930,359 |
Source: Ownwell
Property Tax Bills Across San Geronimo, Marin County, California
Property tax bills in San Geronimo are calculated by applying the local tax rate to the assessed value of a home, which is based on its market value and any eligible exemptions. Because property taxes are tied to assessed value, homeowners with higher-value properties generally face larger bills, while those with lower assessed values pay less. The median home price is $828,483, which helps explain why tax bills in the area can be substantial.
The 25th percentile tax bill is $6,218, while the 75th percentile tax bill is $15,463 and the 90th percentile tax bill is $22,071. The median tax bill is $9,674, which is well above the national median property tax bill of $2,400 and reflects the higher local tax burden in Marin County. For homeowners, this means property taxes can be a major ongoing cost, especially when home values rise and assessments increase.
Median San Geronimo Tax Bill
$9,674
Median Marin County Tax Bill
$11,574
Median California Tax Bill
$5,134
Median United States Tax Bill
$2,400
Property Tax Bills Across San Geronimo, Marin County, California
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 94963 | $3,799 | $6,218 | $9,674 | $15,463 | $22,071 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Property Valuation Date | January 1 |
| Appeal Deadline | December 1 |
| Tax Bill | |
| Issued | October 1 |
| Due Date #1 | December 10 |
| Due Date #2 | April 10 |
Links | |
|---|---|
| Marin Tax Assessor | |
| Website | apps.marincounty.org |