COUNTY FATALITY DATA
Sonoma County, California
Road fatality data for Sonoma County (CA). Data period: 2016-2023.
- 314
- Total Fatalities (2016-2023)
- 29
- Latest Year Deaths
- 7.2
- Per 100k Residents
- Increasing
- Trend
What the Data Shows
Sonoma County, California recorded 314 total road fatalities across 302 reported crashes during the 2016-2023 reporting window, according to NHTSA's Fatality Analysis Reporting System. The most recent year covered by the data logged 29 deaths on county roads, and the annual average works out to approximately 34.9 fatalities per year. Adjusted for population, the fatality rate is 7.2 per 100,000 residents, a per-capita figure that enables fair comparison against other counties in California and nationwide.
Cause-code breakdowns are not individually published for Sonoma County in the current FARS release, so readers looking for contributing-factor data should use the California state page, which aggregates county-level case files into statewide totals. Either way, the underlying records are drawn from a census of fatal crashes, not a statistical sample, so the counts are actual deaths rather than estimates.
The directional trend for Sonoma County is increasing, which means annual fatalities have risen across the reporting period and may warrant closer attention from local transportation and enforcement agencies. Residents, insurers, and policy analysts can use this baseline alongside population density, highway mile data, and rural-versus-urban road mix to judge whether Sonoma County's 314-death total is proportionate to its exposure. All numbers are for research and informational use only.
Total Fatalities
314
Latest Year
29
Avg Annual
34.9
Rate per 100K
7.2
Trend
↑ Increasing
Context
Sonoma County recorded 314 total traffic fatalities across 302 reported crashes over the data period (2016-2023). The most recent year saw 29 fatalities. The county averages approximately 34.9 fatalities per year.
With a fatality rate of 7.2 per 100,000 residents, Sonoma County's road safety record should be considered in context with its road infrastructure, traffic volume, and rural or urban character. The upward trend suggests growing risk that may warrant expanded enforcement or infrastructure investment.
Understanding Road Safety in Sonoma County
The road fatality data for Sonoma County reflects the combined effects of traffic volume, road infrastructure, driver behavior, and emergency response capacity in this area. With 314 total fatalities recorded during the reporting period, this county's safety record should be considered alongside its population density, highway miles, and rural-vs-urban character. Residents and policymakers can use this data to identify whether targeted interventions, such as improved signage, speed enforcement, or infrastructure upgrades, could reduce future fatalities.
How does Sonoma County compare?
Average annual road deaths per 100,000 residents. Choose any comparison from the menu.
Sonoma County is 55% safer than the comparison
Average annual road deaths from the NHTSA Fatality Analysis Reporting System over population from the U.S. Census Bureau Population Estimates Program (Vintage 2023). Rates shown for counties with 10,000+ residents.
Frequently Asked Questions
How many traffic fatalities occurred in Sonoma County, California?
Sonoma County recorded 314 total traffic fatalities across 302 reported crashes over the data period (2016-2023). The most recent year saw 29 fatalities. The county averages approximately 34.9 fatalities per year.
What is the leading cause of road fatalities in Sonoma County?
Specific cause-of-crash breakdowns for Sonoma County are not available in the current NHTSA FARS dataset. Statewide data for California may provide additional context.
Is the trend of road fatalities in Sonoma County increasing or decreasing?
The trend in Sonoma County is increasing. This indicates that traffic fatalities have risen over the data period, warranting attention to road safety initiatives.
What is the fatality rate per capita in Sonoma County?
Sonoma County has a fatality rate of 7.2 per 100,000 residents. This rate accounts for population size and enables meaningful comparison with other counties and the statewide average for California.
How does Sonoma County compare to the rest of California?
Sonoma County recorded 314 total fatalities during the 2016-2023 period. With an average of 34.9 fatalities per year, this county's record should be evaluated alongside population density, highway miles, and whether roads are primarily rural or urban. Visit the California state page for a full county comparison.
Where does the road fatality data for Sonoma County come from?
All road fatality data comes from the NHTSA Fatality Analysis Reporting System (FARS), a census of fatal motor vehicle crashes on public roads in the United States. FARS data covers the period 2016-2023 and includes all crashes resulting in at least one fatality within 30 days.
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Source: NHTSA Fatality Analysis Reporting System (FARS) NHTSA Fatality Analysis Reporting System (FARS) This information is for research and informational purposes only
Read our methodology - how this data is sourced, computed, and verified.