Census-designated place San Geronimo is a census-designated place in California, in Marin County. A census-designated place is an unincorporated community that the Census Bureau defines for statistics; it has no city government of its own.
The Census Bureau does not publish a reliable median property tax bill for San Geronimo. The median home value was $1,220,800 (± $532,569), compared with $695,400 in California and $303,400 nationwide.
| Measure | San Geronimo | California | United States |
|---|---|---|---|
| Population | 562 ± 238 | 39,242,785 | 332,387,540 |
| Median annual property tax bill (homeowners) | Too imprecise to report (estimate $8,625, margin of error ± $6,872) | $4,926 ± $12 | $2,969 ± $3 |
| Median home value | $1,220,800 ± $532,569rough guide only: the margin of error is 44% of the estimate | $695,400 ± $1,030 | $303,400 ± $362 |
| Median household income | Too imprecise to report (estimate $206,375, margin of error ± $125,222) | $96,334 ± $298 | $78,538 ± $176 |
| Property tax as a share of home value (calculated) | Too imprecise to report (estimate 0.71%, margin of error ± 0.64 points) | 0.71% ± under 0.01 points | 0.98% ± under 0.01 points |
| Homes lived in by their owners | 88.7% ± 11.7 points | 55.8% ± 0.3 points | 65.0% ± 0.3 points |
| Owner households headed by someone 65 or older | Too imprecise to report (estimate 41.0%, margin of error ± 32.3 points) | 33.2% ± 0.2 points | 32.6% ± 0.2 points |
| Owners spending 30% or more of income on housing costs | Too imprecise to report (estimate 17.9%, margin of error ± 27.9 points) | 30.9% ± 0.1 points | 22.2% ± 0.1 points |
How to read these numbers
- These are estimates from a survey, not a count. The American Community Survey asks a sample of households. The ± figure is the Census Bureau’s margin of error: the true value is very likely within that range of the estimate. Small places have large margins.
- “Too imprecise to report” means the margin of error is at least half of the estimate, so printing the number would suggest accuracy that does not exist. A “rough guide only” note means the margin is a quarter to a half of the estimate.
- Property tax bill and home value are medians for owner-occupied homes. Half of the homes are above the figure and half below. A median bill is not the rate set by a city or town; the bill combines taxes levied by every local government that serves the home, such as the school district and county.
- “Calculated” rows are worked out by Untax the Roof from the Census figures above them. They compare two medians, so they describe the place, not a particular household.
- Missing is not zero. Where the Census Bureau publishes no figure, this page says so.
Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2019–2023: tables B25103 (real estate taxes), B25077 (home value), B19013 (household income), B01003 (population), B25003 (owners and renters), B25007 (age of householder), B25091 (housing costs as a share of income); see the Census ACS data page.
If property taxes go unpaid in California
How it works. County tax collector sale of tax-defaulted real property
Excess sale money. Excess proceeds after statutory distributions are held for at least one year after recordation of tax deed and may be claimed by parties of interest under RTC 4675; state controller provides current excess-proceeds procedures
These rules are set by California, not by San Geronimo, so this section is the same for every place in the state. Last verified 2026-09-25. See the full California entry with statute links.