Wildfire risk in San Joaquin County spans a wide range across the places we scored. The county’s middle score is 23.3, with lower scores around 16.0 in Lincoln Village and higher scores up to 70.1 near Tracy.
We scored 178 points across San Joaquin County on the same 0–100 scale a Satelife address report uses, and they do not land in one place. 8% of them come out High, while 64% are Low. Which end your own parcel sits at is not something a county map can tell you.
FEMA NRI also rates San Joaquin County: all-hazards risk Relatively High · social vulnerability Relatively Low · community resilience Relatively Moderate · annualised wildfire frequency 0.0032.
Sources: 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.
What does your San Joaquin County address score?
A county range shows the spread. Your parcel sits somewhere inside it — the report says where, and what to do about it.
Free to request · PDF report with a 0–100 score, the drivers behind it, and a mitigation plan
Most scored locations fall in the Low tier, with fewer in Moderate and a smaller group in High. FEMA’s National Risk Index rates the county’s wildfire risk as Relatively Moderate, and its all-hazards risk as Relatively High.
Since 1984, 39,756 acres have burned in San Joaquin County across 53 mapped fire perimeters. That equals 4.4% of the county.
The largest fire in the county record here is the Corral fire in 2009 at 12,243 acres. It is also the most recent large fire in this record.
Other named fires in the county record include Midway (2006), Tesla (2005), Explosives (2009), and San Joaquin Co. (1953).
Fire perimeters coloured by decade. Select a perimeter for its name, year and size.
Perimeter sources: NIFC Interagency Fire Perimeter History · largest on record: Corral 2009. Perimeters are simplified for display; acreage is the figure the source records.
Among the communities listed here, Dogtown has one of the higher typical wildfire risk scores at 29.5. Tracy and Lockeford are also on the higher side at 27.4.
On the lower side, Stockton and Taft Mosswood are both at 18.3, and Morada is 19.9. Nearby places can still differ, so local checks are important when comparing homes.
The 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.
Terrain scores are generally lower to moderate in this county, with a county middle value of 20.0. They run from 5.0 in Mountain House to 65.0 near Tracy.
Vegetation and fuels scores are broader and often higher than terrain scores. The middle value is 40.0, with lower values around 5.0 near Dogtown and higher values up to 79.1 near Tracy.
Fire-weather scores are consistently elevated across the county compared with some other factors. They range from 53.6 near Dogtown to 69.2 in Terminous, with a middle value of 63.0.
That tighter range means fire weather contributes to wildfire risk in many parts of the county, even where terrain or fuels are lower.
Risk is not even from one part of the county to another. The highest scored location is near Tracy at 70.1, while the lowest is in Lincoln Village at 16.0.
Community-level medians show the same pattern: Dogtown is higher at 29.5, while Stockton is lower at 18.3. That spread means neighborhood context can matter as much as county context.
Each bar is what one part of the score covers across San Joaquin 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.
The 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.
| Layer | Min | Median | Max | Lowest place | Highest place | Points |
|---|---|---|---|---|---|---|
| Terrain | 5 | 20 | 65 | Mountain House | near Tracy | 178 |
| Vegetation & fuels | 5 | 40 | 79.1 | near Dogtown | near Tracy | 178 |
| Hazard zone | 10 | 10 | 90 | near Tracy | near Tracy | 178 |
| Fire history | 5 | 5 | 95 | near Tracy | Linden | 178 |
| Fire weather | 53.6 | 63 | 69.2 | near Dogtown | Terminous | 178 |
| Composite | 16 | 23.3 | 70.1 | Lincoln Village | Tracy | 178 |
Independently of Satelife's layers, the USFS Wildfire Risk to Communities grid puts the county's mean annual burn probability at 0.48% (90th percentile cell: 1.44%), with a mean conditional flame length of 2.47 ft. 70% of the 27,868 grid cells inside the county carry burnable fuel at all.
Source: USFS Wildfire Risk to Communities v2.0 (ImageServer, county extent).
178 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.
Hazard-zone scores vary sharply by location in this county. The middle value is 10.0, but scores reach 90.0 near Tracy.
Fire-history scores also vary a lot. The middle value is 5.0, while the highest scored location is Linden at 95.0.
The USFS Wildfire Risk to Communities model reports a mean annual burn probability of 0.48%, with a 90th-percentile cell value of 1.44%. It also shows that 69.7% of the county can burn; this burn-probability model is separate from the fire-weather score.
Find out where your San Joaquin County parcel sits
Slope, the fuel touching the structure, the road out, the fire history within a mile — measured at your address, not averaged across the county.
Free to request · PDF report with a 0–100 score, the drivers behind it, and a mitigation plan
Every one of the 50 ZIP areas that touch San Joaquin 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.
High 1 ZIP
Moderate 9 ZIPs
Low 21 ZIPs
No sampled point inside 19 ZIPs
94505 Mountain House · 94513 Mountain House · 94550 Tracy · 95202 Stockton · 95211 Stockton · 95252 Peters · 95253 Victor · 95356 Escalon · 95358 Ripon · 95361 Escalon · 95363 · 95367 Escalon · 95368 Ripon · 95385 Ripon · 95387 Ripon · 95640 Dogtown · 95641 Terminous · 95690 Thornton · 95757 Thornton
Grouped from 31 of 50 ZIP areas — the rest had no sample point fall inside them. The community shown is the nearest mapped place to the ZIP's centre.
ZIP areas are Census 2020 ZIP Code Tabulation Areas intersecting the county boundary.
These tiers group the scored locations by wildfire risk, from Low up to Very High. In San Joaquin County, most scored locations are in Low, fewer are in Moderate, and a smaller group is in High.
The most recent large fire in this record is Corral (2009), which is also the largest listed fire at 12,243 acres.
39,756 acres have burned since 1984, which is 4.4% of the county.
No. The USFS values here are a burn-probability model (0.48% mean annual burn probability, with 1.44% at the 90th-percentile cell), while fire weather is a separate score layer.
FEMA’s National Risk Index rates San Joaquin County’s wildfire risk as Relatively Moderate and its expected annual wildfire loss as Relatively Moderate.
A 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.
Start with your address →