Fatal crash profile · County
Traffic deaths in San Mateo County, California
County in California · United States
- Deaths, 2024
- 30
- Fatal crashes
- 27
- Population
- 740.6K
In 2024, 30 people died in 27 fatal crashes in San Mateo County, California. That was 21.1% fewer than in 2023 (38) and the fewest in any year since 2020. The death rate was 4.1 per 100,000 residents, compared with 9.8 in California and 11.5 in the United States. San Mateo County had the 25th most traffic deaths among California's counties. Between 2020 and 2024, 191 people died, an average of 38 a year. Pedestrians accounted for 33% of deaths, and 33% of fatal crashes were speeding-related.
Deaths
Traffic deaths
4.1
deaths per 100,000 residents in 2024
- About 40 percent of the rate in California: 9.8
- About one-third of the rate in the United States: 11.5
5.1
average deaths per 100,000 residents a year, 2020–2024
- About half the average in California: 10.7
- About 40 percent of the average in the United States: 12.3
-21%
change in deaths from 2023 to 2024
38 deaths in 2023, 30 in 2024
- California: -7%
- The United States: -4%
| Category | Deaths | Fatal crashes |
|---|---|---|
| 2020 | 39 | 38 |
| 2021 | 36 | 35 |
| 2022 | 48 | 43 |
| 2023 | 38 | 35 |
| 2024 | 30 | 27 |
People who died within 30 days of a crash. A fatal crash can kill more than one person.
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| Category | Deaths per 100,000 |
|---|---|
| 2020 | 5.1 |
| 2021 | 4.9 |
| 2022 | 6.6 |
| 2023 | 5.2 |
| 2024 | 4.1 |
Uses Census population estimates, available from 2000.
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Road users
Who died
33%
of deaths were pedestrians
- About 1.2 times the share in California: 28%
- About 1.8 times the share in the United States: 18%
| Category | Deaths |
|---|---|
| Vehicle occupants and others | 15 |
| Pedestrians | 10 |
| Motorcyclists | 3 |
| Cyclists | 2 |
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| Type | Deaths | Share in San Mateo County | Share in California |
|---|---|---|---|
| Pedestrians | 10 | 33% | 28% |
| Motorcyclists | 3 | 10% | 13% |
| Cyclists | 2 | 7% | 4% |
| Alcohol-impaired driving crashes | 4 | 13% | 34% |
| Speeding-related crashes | 9 | 30% | 29% |
Alcohol-impaired and speeding-related count everyone killed in those crashes, so a death can appear in more than one row.
Crash factors
Speeding, alcohol, night and weekend crashes
33%
of fatal crashes were speeding-related
- About 1.2 times the share in California: 29%
- About 1.2 times the share in the United States: 28%
15%
of fatal crashes involved a drinking driver
- About 55 percent of the share in California: 27%
- About 60 percent of the share in the United States: 25%
| Category | San Mateo County | California | United States |
|---|---|---|---|
| Speeding-related | 14.8% | 26.6% | 24.8% |
| Alcohol-involved | 33.3% | 28.8% | 28.1% |
| At night | 48.1% | 62.0% | 53.6% |
| At weekends | 22.2% | 34.4% | 32.6% |
Share of fatal crashes. Alcohol-involved means a police-reported drinking driver.
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Timing
When crashes happen
48%
of fatal crashes happened at night
- About three-quarters of the share in California: 62%
- About 90 percent of the share in the United States: 54%
22%
of fatal crashes happened at weekends
- About two-thirds of the share in California: 34%
- About two-thirds of the share in the United States: 33%
| Category | Fatal crashes |
|---|---|
| 12am | 4 |
| 1am | 6 |
| 2am | 7 |
| 3am | 8 |
| 4am | 7 |
| 5am | 6 |
| 6am | 11 |
| 7am | 3 |
| 8am | 3 |
| 9am | 7 |
| 10am | 2 |
| 11am | 5 |
| 12pm | 4 |
| 1pm | 8 |
| 2pm | 8 |
| 3pm | 5 |
| 4pm | 7 |
| 5pm | 9 |
| 6pm | 5 |
| 7pm | 10 |
| 8pm | 6 |
| 9pm | 14 |
| 10pm | 15 |
| 11pm | 12 |
All crashes 2020–2024.
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| Category | Fatal crashes |
|---|---|
| Sun | 24 |
| Mon | 22 |
| Tue | 23 |
| Wed | 18 |
| Thu | 27 |
| Fri | 29 |
| Sat | 35 |
All crashes 2020–2024.
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| Category | Fatal crashes |
|---|---|
| Jan | 16 |
| Feb | 16 |
| Mar | 14 |
| Apr | 20 |
| May | 17 |
| Jun | 10 |
| Jul | 16 |
| Aug | 18 |
| Sep | 15 |
| Oct | 9 |
| Nov | 18 |
| Dec | 9 |
All crashes 2020–2024.
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Conditions
Weather and light
| Category | Fatal crashes |
|---|---|
| Clear | 134 |
| Cloudy | 27 |
| Rain | 14 |
| Fog, Smog, Smoke | 2 |
All crashes 2020–2024. Crashes where conditions were not reported are left out.
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| Category | Fatal crashes |
|---|---|
| Daylight | 67 |
| Dark - Lighted | 62 |
| Dark - Not Lighted | 40 |
| Dawn | 4 |
| Dusk | 3 |
| Dark - Unknown Lighting | 1 |
All crashes 2020–2024. Crashes where conditions were not reported are left out.
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Roads and vehicles
Where and what, 2020–2024
Roads with the most fatal crashes
- I-28023
- US-10122
- SR-112
- SR-829
- SR-1 CABRILLO HWY8
- SR-82 EL CAMINO REAL7
- SR-926
- SR-355
- SR-844
- US-101 RAMP4
Road names as recorded in police reports.
| Category | Vehicles |
|---|---|
| Cars | 118 |
| SUVs | 50 |
| Motorcycles | 29 |
| Pickup trucks | 20 |
| Vans | 13 |
| Other vehicles | 11 |
| Medium and heavy trucks | 11 |
| Buses | 2 |
All crashes 2020–2024.
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Vehicles most often involved
- Honda Civic10
- Toyota Corolla8
- Toyota PRIUS6
- Toyota Highlander6
- Nissan Altima6
- Honda CR-V6
- Honda Accord6
- Toyota Tacoma5
- Toyota Camry5
- Volkswagen Jetta4
Reflects how common a vehicle is as well as crash involvement; not a safety rating.
Crashes
Fatal crashes
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Fatal crashes in 2024. Crashes without reported coordinates are not shown.
Filter crashes
| Date | Location | Road | Deaths |
|---|---|---|---|
| Sep 13, 2022 | Daly City | I-280 | 1 |
| Sep 8, 2022 | — | SR-92 | 1 |
| Aug 23, 2022 | Daly City | I-280 RAMP | 1 |
| Aug 10, 2022 | Daly City | SR-1 | 1 |
| Aug 5, 2022 | Foster City | SR-92 J ARTHUR YOUNGER FWY | 2 |
| Jul 30, 2022 | San Mateo | SR-92 | 1 |
| Jul 29, 2022 | Menlo Park | HAVEN AVE | 1 |
| Jul 20, 2022 | Millbrae | US-101 RAMP | 1 |
| Jul 11, 2022 | Daly City | SR-1 | 1 |
| Jul 2, 2022 | — | I-280 JUNIPERO SERRA FWY | 1 |
| Jun 29, 2022 | Menlo Park | SR-82 EL CAMINO REAL | 1 |
| Jun 25, 2022 | — | SR-1 | 1 |
| Jun 19, 2022 | San Bruno | SAN BRUNO AVE | 1 |
| Jun 3, 2022 | — | I-280 JUNIPERO SERRA FWY | 1 |
| May 23, 2022 | East Palo Alto | SR-109 UNIVERSITY AVE | 1 |
| May 20, 2022 | Half Moon Bay | SR-1 CABRILLO HWY S | 1 |
| May 19, 2022 | San Mateo | SOUTH BLVD | 1 |
| May 13, 2022 | South San Francisco | I-380 RAMP | 1 |
| May 1, 2022 | — | SR-84 | 1 |
| Apr 29, 2022 | — | SR-1 | 3 |
| Apr 25, 2022 | East Palo Alto | E BAYSHORE RD | 1 |
| Apr 8, 2022 | — | SR-92 | 1 |
| Mar 26, 2022 | — | GUADALUPE CANYON PKWY | 1 |
| Mar 14, 2022 | — | SR-1 | 1 |
| Mar 8, 2022 | South San Francisco | HILLSIDE BLVD | 1 |
Explore
Nearby and related
Cities in San Mateo County
| Area | Deaths, 2024 | Per 100,000 |
|---|---|---|
| Burlingame | 2 | 6.4 |
| Daly City | 8 | 7.9 |
| Redwood City | 3 | 3.6 |
| San Mateo | 5 | 4.9 |
| South San Francisco | 3 | 4.7 |
Nearby counties
Get updates for San Mateo County, California
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Source: NHTSA Fatality Analysis Reporting System (FARS), 2020–2024. A fatal crash is one in which at least one person died within 30 days. Population: US Census Bureau estimates.