{
  "title": "Wildfire Risk in Mariposa County, CA 2026 | Satelife",
  "description": "Wildfire risk in Mariposa County spans a wide range across the places we scored. The overall scores run from 41.4 near Mariposa to 82.2 near Greeley Hill, with a county middle point of 70.0.",
  "image": "https://satelife.ai/images/wildfire-risk/mariposa-county/generated/mariposa-county-locator.webp",
  "canonical": "https://satelife.ai/wildfire-risk/california/mariposa-county/",
  "content": "[Home](/)›[Wildfire Risk](/wildfire-risk/)›[California](/wildfire-risk/california/)›Mariposa County\n\nMariposa County, California\n\n# Wildfire risk in Mariposa County: _where it is highest_, and why\n\nWildfire risk in Mariposa County spans a wide range across the places we scored. The overall scores run from 41.4 near Mariposa to 82.2 near Greeley Hill, with a county middle point of 70.0.\n\n[Score my Mariposa County address →](#score-my-address) [How risky is this county? ↓](#risk-at-a-glance)\n\nBefore 20002000s2010s2020sCommunity\n\nMariposa County — the largest fires on record, at their perimeter centres, with the county’s main communities. Select a marker for its detail.\n\nAt a glance\n\n## Half of Mariposa County scores _High_ or worse\n\nWe scored 155 points across Mariposa County on the same 0–100 scale a Satelife address report uses, and they do not land in one place. 26% of them come out Very High, while 5% are Moderate. Which end your own parcel sits at is not something a county map can tell you.\n\n26%\n\n69%\n\n**Very High** 26% · 41 of 155 points **High** 69% · 107 of 155 points **Moderate** 5% · 7 of 155 points\n\nSafest end we measured 41.4 near Mariposa · Moderate\n\nMiddle of the county 70 High — half of Mariposa County is above this\n\nMost exposed end we measured 82.2 near Greeley Hill · Very High\n\n### And the federal models agree it is a fire county\n\nRelatively High FEMA National Risk Index — wildfire risk rating · index score 99 / 100\n\n$15.4M / yr FEMA NRI — expected annual loss from wildfire · rated Relatively High\n\n1.07% USFS Wildfire Risk to Communities — mean annual burn probability · 90th-percentile cell 2.33%\n\n4.86 ft USFS WRC — mean conditional flame length · 99% of the county carries burnable fuel\n\nFEMA NRI also rates Mariposa County: all-hazards risk Relatively Moderate · social vulnerability Very High · community resilience Relatively Low · annualised wildfire frequency 0.0156.\n\nSources: FEMA National Risk Index 1.20.0 (Dec 2025), county record · USFS Wildfire Risk to Communities v2.0, mean of the grid cells inside the county. Both describe the county as a whole, never an address in it.\n\nWhat does your Mariposa County address score?\n\nA county range shows the spread. Your parcel sits somewhere inside it — the report says where, and what to do about it.\n\nFree to request · PDF report with a 0–100 score, the drivers behind it, and a mitigation plan\n\nLocal context\n\n## What the data says about _Mariposa County_\n\nMost scored locations fall in the High tier. Counts are 107 High, 41 Very High, and 7 Moderate, with no Low points.\n\nFire history is a major part of the county picture. Since 1984, 571,447 acres have burned, which is 61.4% of the county.\n\nFire record\n\n## Where the fires _actually were_\n\nRecorded fire activity is extensive in Mariposa County: 464 fire perimeters since 1984, covering 571,447 acres in total.\n\nIn this county view, the largest named fire is Ferguson (2018), at 97,729 acres. The Rim fire (2013) was larger overall at 256,916 acres and was partly in the county.\n\nThe most recent large fire is Waltz (2026). Other major events in the county record include Detwiler (2017) at 81,826 acres and Oak (2022) at 19,245 acres.\n\n![Ferguson Fire (2018) in Mariposa County, California - Fire burning near Mariposa CA. Firefighters continue to contain the blaze in rugged, steep terrain. Photo by PIOF Jim Bartlett Tea](/images/wildfire-risk/mariposa-county/photos/ferguson-fire-2018-28792474037.webp)\n\n**Ferguson Fire, 2018** — Mariposa County. Photo: Region 5 Photography · [CC BY 2.0](https://commons.wikimedia.org/wiki/File:Ferguson_Fire_2018_-_28792474037.jpg)\n\n![Detwiler Fire (2017) in Mariposa County, California - Photo by Jerry Martinez, BLM.](/images/wildfire-risk/mariposa-county/photos/detwiler-fire-in-mother-lode-field-office-37483351812.webp)\n\n**Detwiler Fire, 2017** — Mariposa County. Photo: blmcalifornia · [Public domain](https://commons.wikimedia.org/wiki/File:Detwiler_Fire_in_Mother_Lode_Field_Office_\\(37483351812\\).jpg)\n\n464 mapped fire perimeters centred in the county since 1984\n\n571,447 acres inside those perimeters since 1984\n\n61.4% of the county's area, as a share of 3,766.1 km²\n\nWaltz 2026 most recent large fire on record\n\nBefore 20002000s2010s2020s \n\nFire perimeters coloured by decade. Select a perimeter for its name, year and size.\n\nNamed fires on record\n\n-   **Ferguson Fire**201897,729 acres\n-   **Detwiler Fire**201781,826 acres\n-   **Telegraph Fire**200834,084 acres\n-   **Oak Fire**202219,245 acres\n-   **Rim Fire**2013256,916 acres in totalcrossed into the county\n-   **Larson Fire**198748,087 acres\n-   **Hamm Fire**198733,144 acres\n-   **Red Fire**20228,432 acres\n\nPerimeter sources: NIFC Interagency Fire Perimeter History · WFIGS Interagency Perimeters · largest on record: Ferguson 2018. Perimeters are simplified for display; acreage is the figure the source records.\n\nCommunities\n\n## Where in the county you are _matters most_\n\nAmong named communities, Yosemite Village has a scored middle value of 74.9, Mariposa is 73.8, and Greeley Hill is 72.3.\n\nFish Camp is 72.1 and Curry Village is 71.8. All of these are above the county middle value of 70.0, so these community-level readings sit on the higher side of the county distribution.\n\nYosemite Village village\n\n74.9 _High_\n\nMariposa village\n\n73.8 _High_\n\nGreeley Hill village\n\n72.3 _High_\n\nFish Camp village\n\n72.1 _High_\n\nCurry Village village\n\n71.8 _High_\n\nThe score is the median of the sampled points nearest that community — a community-scale indicator, not a score for any individual property in it. Population comes from the community's own record where the source carries one.\n\nTerrain & fuels\n\n## Terrain, vegetation and _fuels_\n\nTerrain contributes differently by location, from 30.0 near Curry Village to 65.0 near Mariposa, with a middle value of 55.0.\n\nVegetation and fuels are mostly on the higher side in the places we scored. Values run from 40.0 at Mariposa to 80.0 near Mariposa, with a middle value of 72.6.\n\nTaken together, steeper terrain and heavier fuels are associated with higher wildfire risk in several parts of the county, especially where both are elevated.\n\n55 median terrain score (max 65 near Mariposa)\n\n72.6 median vegetation & fuels score (max 80 near Mariposa)\n\nFire weather\n\n## Fire weather across _Mariposa County_\n\nFire-weather scores were measured across Mariposa County and are tightly grouped. They range from 54.5 near Yosemite Village to 56.2 near Mariposa, with a middle value of 55.8.\n\nBecause this spread is small, fire weather contributes at a fairly similar level across the county compared with other factors that swing more from place to place.\n\n54.5 lowest fire-weather score — near Yosemite Village\n\n56.2 highest fire-weather score — near Mariposa\n\nWhat drives it\n\n## Which part of the risk _moves_, and which doesn't\n\nRisk is not uniform from one part of the county to another. The lowest overall score, 41.4, is near Mariposa, while the highest, 82.2, is near Greeley Hill.\n\nHazard-zone scores also vary sharply by location, from 10.0 near Curry Village to 93.6 near Greeley Hill. That spread contributes to why nearby places can land in different risk tiers.\n\nFire-history scores are generally high in this county, with a middle value of 90.0 and a top value of 95.0 at Mariposa. At the low end, one scored location near Mariposa is 5.0, showing that past-fire exposure is very uneven across the county.\n\nEach bar is what one part of the score covers across Mariposa County, on the same 0–100 scale. A long bar is a part of the risk that depends on where you are; a short one is the same almost everywhere.\n\nTerrain\n\n30–65 highest near Mariposa\n\nVegetation & fuels\n\n40–80 highest near Mariposa\n\nHazard zone\n\n10–93.6 highest near Greeley Hill\n\nFire history\n\n5–95 highest near Mariposa\n\nFire weather\n\n54.5–56.2 highest near Mariposa\n\nOverall score\n\n41.4–82.2 highest near Greeley Hill\n\nThe tick on each bar is the middle value. Tier boundaries — Moderate at 25, High at 50, Very High at 75 — are the faint lines behind them.\n\nShow every number behind these bars\n\nLayer\n\nMin\n\nMedian\n\nMax\n\nLowest place\n\nHighest place\n\nPoints\n\nTerrain\n\n30\n\n55\n\n65\n\nnear Curry Village\n\nnear Mariposa\n\n155\n\nVegetation & fuels\n\n40\n\n72.6\n\n80\n\nMariposa\n\nnear Mariposa\n\n155\n\nHazard zone\n\n10\n\n70\n\n93.6\n\nnear Curry Village\n\nnear Greeley Hill\n\n155\n\nFire history\n\n5\n\n90\n\n95\n\nnear Mariposa\n\nMariposa\n\n155\n\nFire weather\n\n54.5\n\n55.8\n\n56.2\n\nnear Yosemite Village\n\nnear Mariposa\n\n155\n\nComposite\n\n41.4\n\n70\n\n82.2\n\nnear Mariposa\n\nnear Greeley Hill\n\n155\n\nIndependently of Satelife's layers, the USFS Wildfire Risk to Communities grid puts the county's mean annual burn probability at **1.07%** (90th percentile cell: **2.33%**), with a mean conditional flame length of **4.86 ft**. **99%** of the 19,766 grid cells inside the county carry burnable fuel at all.\n\nSource: USFS Wildfire Risk to Communities v2.0 (ImageServer, county extent).\n\nCAL FIRE has no mapped Fire Hazard Severity Zone at **75** of the 155 sampled points — the zones cover Local Responsibility Areas. At **74** of them the USFS grid above supplied the hazard reading instead; at the remaining 1 the hazard weight is renormalised away rather than scored as low.\n\n155 sample points on a ~2.3 km grid, plus one at the centre of each community, weighted with the Satelife county profile v1 · median layer coverage 100%. Scores are 0–100 and comparable within the county, not across states.\n\nFor a property\n\n## What a county range means for _one address_\n\nFEMA’s National Risk Index rates Mariposa County’s wildfire risk as Relatively High, and its wildfire expected annual loss as Relatively High. FEMA also rates county social vulnerability as Very High and community resilience as Relatively Low.\n\nThe USFS Wildfire Risk to Communities model reports a mean annual burn probability of 1.07% and a 90th-percentile cell burn probability of 2.33%. It also indicates 98.9% of the county can burn.\n\nIndividual home features were not measured on this county page (for example, specific roof or vent details at a given address). What is measured here is place-based wildfire risk across the county.\n\nAcross 155 sampled points in Mariposa County, the score runs from 41.4 to 82.2 — two neighbouring parcels can sit in different tiers. A county number is the middle of that spread; it says nothing about which end yours is at.\n\nFind out where your Mariposa County parcel sits\n\nSlope, the fuel touching the structure, the road out, the fire history within a mile — measured at your address, not averaged across the county.\n\nFree to request · PDF report with a 0–100 score, the drivers behind it, and a mitigation plan\n\nCoverage\n\n## ZIP codes we cover in Mariposa County\n\nEvery one of the 17 ZIP areas that touch Mariposa County — we run address-level reports in all of them. They are grouped by the median score of the points we sampled inside each, which is a neighbourhood-scale indicator and **not** a score for any property: two homes in the same ZIP routinely land in different tiers.\n\n**Very High** 2 ZIPs\n\n-   [93601 Fish Camp77](/wildfire-risk/zip/93601/)\n-   [93623 Fish Camp76](/wildfire-risk/zip/93623/)\n\n**High** 11 ZIPs\n\n-   [95311 Greeley Hill73](/wildfire-risk/zip/95311/)\n-   [95389 Curry Village73](/wildfire-risk/zip/95389/)\n-   [95338 Mariposa72](/wildfire-risk/zip/95338/)\n-   [95321 Yosemite Village71](/wildfire-risk/zip/95321/)\n-   [95318 Yosemite Village66](/wildfire-risk/zip/95318/)\n-   [95345 Mariposa66](/wildfire-risk/zip/95345/)\n-   [95329 Greeley Hill62](/wildfire-risk/zip/95329/)\n-   [95306 Mariposa58](/wildfire-risk/zip/95306/)\n-   [93653 Mariposa56](/wildfire-risk/zip/93653/)\n-   [95369 Greeley Hill52](/wildfire-risk/zip/95369/)\n-   [95325 Mariposa50](/wildfire-risk/zip/95325/)\n\n**No sampled point inside** 4 ZIPs\n\n[93610](/wildfire-risk/zip/93610/) · [93644 Fish Camp](/wildfire-risk/zip/93644/) · [95305 Greeley Hill](/wildfire-risk/zip/95305/) · [95333 Mariposa](/wildfire-risk/zip/95333/)\n\nGrouped from 13 of 17 ZIP areas — the rest had no sample point fall inside them. The community shown is the nearest mapped place to the ZIP's centre.\n\nZIP areas are Census 2020 ZIP Code Tabulation Areas intersecting the county boundary.\n\nWhere to go next\n\n## Mariposa County wildfire risk _in context_\n\n[California wildfire risk The statewide picture and every county page we publish](/wildfire-risk/california/) [Wildfire risk by state Every state and county we cover](/wildfire-risk/) [How Satelife calculates wildfire risk Data sources, layers, score composition, honest limits](/wildfire-risk/methodology/) [Create a wildfire evacuation plan Zones, egress routes, refuge areas](/wildfire-evacuation-plan/) [Run a report for a Mariposa County address PDF + score + mitigation plan](/#cta)\n\nFAQ\n\n## Frequently asked questions about _Mariposa County wildfire risk_\n\nDoes most of Mariposa County score High or Very High?\n\nMost scored locations are in the High tier (107 points), with another 41 in Very High. Only 7 points are Moderate, and none are Low.\n\nWhat is the latest large fire to know about here?\n\nThe most recent large fire is Waltz (2026). The largest named fire in this county view is Ferguson (2018), at 97,729 acres.\n\nHow much of the county has burned since 1984?\n\nA total of 571,447 acres has burned since 1984, equal to 61.4% of Mariposa County.\n\nAre FEMA ratings neighborhood-specific?\n\nNo. FEMA’s National Risk Index ratings shown here apply to Mariposa County as a whole, not to individual towns or blocks.\n\nIs fire weather very different across the county?\n\nIn these scores, fire weather is fairly consistent: 54.5 to 56.2 across the county’s scored locations.\n\nThis page is generated from a Mariposa County data pack assembled on 2026-08-18 (pack v1.0). Scores are sampled across the county, not measured at any individual address, and are informational decision support — not a substitute for official evacuation orders, a fire-agency hazard determination, or an insurer's underwriting judgement. Data versions: fema\\_nri 1.20.0 (Dec 2025) · landfire per adapter · nifc\\_history All Years View · wfigs current · wrc v2.0 (2024) · zcta Census 2020.\n\n## What does _your parcel_ look like, layer by layer?\n\nA county range shows the spread. An address-level Satelife report shows where in that spread your property actually sits — PDF, per-layer score, and a prioritized mitigation plan.\n\n[Start with your address →](/#cta)\n\n[![PRR](/images/prr.png)](/ficha-de-website-voucher-satelife.pdf)\n\n© 2024–2026 Satelife, Lda. All rights reserved.\n\nSatelife reports are for informational purposes only and do not constitute insurance, financial, or legal advice."
}