238
Fatal crashes
254
Fatalities
21%
Drunk driver
34
Avg per year
Deadliest fatal-crash clusters in San Mateo County
Locations with multiple fatal crashes on the same road segment, 2017-2023. Click any location to pull the full report — every individual crash with vehicle, person, and contributing-factor detail.
2 fatal crashes
$9 report →
3 fatalities · 2022–2023
Other Principal Arterial · Redwood City
37.493, -122.244
2 fatal crashes
$9 report →
2 fatalities · 2017–2020
Principal Arterial - Other Freeways and Expressways · San Mateo
37.550, -122.313
2 fatal crashes
$9 report →
2 fatalities · 2020–2022
Principal Arterial - Other Freeways and Expressways · Foster City
37.574, -122.262
2 fatal crashes
$9 report →
2 fatalities · 2021
Principal Arterial - Other Freeways and Expressways · Burlingame
37.598, -122.373
2 fatal crashes
$9 report →
2 fatalities · 2020–2022
Principal Arterial - Other Freeways and Expressways · Millbrae
37.603, -122.382
Crashes by year
| Year | Crashes | Fatalities | Drunk driver |
|---|---|---|---|
| 2017 | 29 | 33 | 6 |
| 2018 | 29 | 30 | 6 |
| 2019 | 29 | 30 | 4 |
| 2020 | 38 | 39 | 10 |
| 2021 | 35 | 36 | 7 |
| 2022 | 43 | 48 | 10 |
| 2023 | 35 | 38 | 6 |
Cities in San Mateo County
Fatal crashes by city within San Mateo County. Need crash history at a specific address or intersection? Our intersection report shows every fatal crash within any radius of a GPS coordinate.
| City | Crashes | Fatalities |
|---|---|---|
| SOUTH SAN FRANCISCO | 23 | 23 |
| DALY CITY | 22 | 22 |
| SAN MATEO | 19 | 19 |
| REDWOOD CITY | 15 | 16 |
| EAST PALO ALTO | 11 | 11 |
| BURLINGAME | 11 | 13 |
| MENLO PARK | 11 | 11 |
| SAN BRUNO | 10 | 11 |
| PACIFICA | 9 | 10 |
| WOODSIDE | 5 | 6 |
| MILLBRAE | 5 | 5 |
| SAN CARLOS | 5 | 5 |
| HALF MOON BAY | 5 | 5 |
| FOSTER CITY | 4 | 5 |
| BELMONT | 3 | 3 |
When crashes happen
By month
| Month | Crashes |
|---|---|
| January | 24 |
| February | 23 |
| March | 18 |
| April | 25 |
| May | 22 |
| June | 19 |
| July | 21 |
| August | 20 |
| September | 21 |
| October | 13 |
| November | 18 |
| December | 14 |
Most dangerous hours
| Hour | Crashes |
|---|---|
| 21:00 | 18 |
| 06:00 | 16 |
| 22:00 | 16 |
| 19:00 | 16 |
| 03:00 | 13 |
| 23:00 | 12 |
| 17:00 | 12 |
| 20:00 | 11 |
| 14:00 | 11 |
| 15:00 | 10 |
Vehicles involved in fatal crashes
| Make | Vehicles involved |
|---|---|
| Toyota | 55 |
| Honda | 45 |
| Ford | 44 |
| Chevrolet | 18 |
| Mercedes-Benz | 14 |
| Other Make | 13 |
| Dodge | 12 |
| BMW | 11 |
| Nissan/Datsun | 11 |
| Unknown Make | 9 |
Conditions
Weather
| Weather | Crashes |
|---|---|
| Clear | 180 |
| Cloudy | 35 |
| Rain | 17 |
| Fog, Smog, Smoke | 4 |
| Not Reported | 1 |
| Other | 1 |
Collision type
| Type | Crashes |
|---|---|
| Single vehicle / pedestrian / object | 178 |
| Front-to-Front | 20 |
| Angle | 18 |
| Front-to-Rear | 14 |
| Sideswipe - Same Direction | 4 |
| Not Reported | 2 |
| Other | 1 |
| Sideswipe - Opposite Direction | 1 |
Need crash data for a specific location in San Mateo County?
Our intersection report shows every fatal crash within any radius of a GPS coordinate — with a map, event sequence, contributing factors, vehicle and person details. Used by attorneys for discovery and insurance teams for risk assessment.
For programmatic access to San Mateo County crash data, see the API guide. $19/mo for full access.
Data source: NHTSA Fatality Analysis Reporting System (FARS), 2017-2023. Updated annually.
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