Mariposa County Fire Hazard Severity Zone (FHSZ) and insurance
CAL FIRE wildfire hazard for Mariposa County, California, how physical hazard differs from an insurer's risk assessment, and your home coverage options.
| Wildfire hazard (CAL FIRE FHSZ) | High |
|---|---|
| Earthquake exposure | Low |
| Flood exposure | No |
| Coastal exposure | No |
| Wind-driven fire risk | No |
| Region | Sierra Nevada |
| County seat | Mariposa |
This is a qualitative county-level overview derived from CAL FIRE wildfire hazard data and companion perils, not a parcel-level score. Check a specific address on the CAL FIRE viewer linked below.
Hazard is not the same as your insurance risk
A Fire Hazard Severity Zone measures long-term physical wildfire hazard to guide building codes and defensible-space rules. It is not an insurer's underwriting score, and the California Department of Insurance has stated that CAL FIRE's maps do not by themselves determine insurance rates or availability. Carriers weigh your roof, your defensible space, your access and water supply, and their own catastrophe models - so a zone designation and a carrier's decision can and do diverge.
We explain that gap in full, including what the 2025 statewide map update changed and why most homes destroyed in the Eaton Fire sat outside the mapped very-high zone, on our California Fire Hazard Severity Zone guide. You can look up any Mariposa County address on the official CAL FIRE zone viewer.
Wildfire and home insurance in Mariposa County
Wildfire is often the deciding factor in whether a home can be insured in Mariposa County. When carriers decline or non-renew here, we turn to surplus lines wildfire markets and California FAIR Plan coverage paired with a difference-in-conditions wrap for broader protection.
A forested Sierra county at the gateway to Yosemite, struck by the 2022 Oak Fire. Nearly all home coverage here is shaped by wildfire hazard mapping.
CAL FIRE incident activity in Mariposa County
Between 2015 and 2026, CAL FIRE recorded 61 tracked incidents listing Mariposa County. That is a moderate level of recorded activity for a California county.
The largest tracked incident in Mariposa County was the Ferguson Fire in 2018, which burned 96,901 acres.
| Year | Incidents |
|---|---|
| 2015 | 3 |
| 2017 | 12 |
| 2018 | 5 |
| 2019 | 5 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 5 |
| 2023 | 1 |
| 2024 | 8 |
| 2025 | 11 |
| 2026 | 6 |
Source: CAL FIRE incident record, 2015-2026. These are incidents CAL FIRE responded to or monitored, not every ignition in California, so treat the count as a measure of significant fire activity rather than a complete tally. Acreage attributed to the county excludes multi-county complexes, because CAL FIRE reports acres per incident rather than per county.
FAIR Plan reliance in Mariposa County
The California FAIR Plan is the state's insurer of last resort - basic fire coverage for homes the standard market will not write. Its policy count is a direct gauge of how hard a county has become to insure.
California FAIR Plan policies in force (residential, commercial, and business owner lines), by county, as of September 2024. Source: California FAIR Plan.
A rising FAIR Plan count does not mean bare-bones coverage is your only option. As an independent broker we still check the admitted and surplus lines markets first, and when the FAIR Plan is the right base we pair it with a difference-in-conditions policy for the theft, liability, and water damage it excludes.
Coverage options in Mariposa County
- Wildfire and hard-to-insure home coverage
- California FAIR Plan plus difference-in-conditions
- Standard homeowners, condo, and renters coverage
Sources
Mariposa County FHSZ FAQ
Is Mariposa County in a Fire Hazard Severity Zone?
Yes. CAL FIRE maps significant portions of Mariposa County as High or Very High Fire Hazard Severity Zones, especially in the wildland-urban interface.
Does a Fire Hazard Severity Zone set my insurance rate in Mariposa County?
No. A CAL FIRE zone classifies long-term physical wildfire hazard for planning and building rules, not insurance pricing, and the California Department of Insurance has stated the maps do not by themselves determine rates or availability. Carriers price each Mariposa County property on its own roof, defensible space, access, and their own catastrophe models.
Can I still get homeowners insurance in Mariposa County?
Yes. As an independent broker we shop admitted carriers writing Mariposa County, then surplus lines wildfire markets and the California FAIR Plan paired with a difference-in-conditions wrap when a home is hard to place in the standard market.
How many wildfires does Mariposa County get?
CAL FIRE recorded 61 tracked incidents listing Mariposa County between 2015 and 2026, with its busiest year being 2017. That covers the fires CAL FIRE responded to or monitored rather than every ignition, so read it as a measure of significant activity.
What was the largest wildfire in Mariposa County?
The largest tracked incident in Mariposa County was the Ferguson Fire in 2018, which burned 96,901 acres.
How many California FAIR Plan policies are in Mariposa County?
As of September 2024, Mariposa County had 3,073 California FAIR Plan policies in force across all lines, up from 1,256 in 2020 - a sign of how far the standard market has pulled back. The FAIR Plan is the insurer of last resort; a broker can still check admitted and surplus lines options first.
Does the California FAIR Plan cover Mariposa County?
Yes. The California FAIR Plan is available statewide, including Mariposa County, as a last-resort option for fire coverage when the standard market declines. It is typically paired with a difference-in-conditions policy for the theft, liability, and water damage the FAIR Plan does not include.
Insuring a home in Mariposa County?
Tell us what you need and a licensed California broker will reach out with real options. Simple situation or complicated one, we shop it the same way.
Prefer to talk? Call (916) 469-5253.