Car crash statistics in Ontario, CA

We don't rate cities as safe or unsafe: crash counts can't say how risky a street is, and busy streets have more crashes partly because more people use them. This page covers traffic crashes, not crime. What the records show: 14,361 crashes were reported in Ontario from 2021–2025, 5,671 with an injury and 108 with a death. 39% (California: 40%) of crashes injured someone. 25% (California: 25%) were hit-and-run.

• 39% (California: 40%) of crashes injured someone.
• 25% (California: 25%) were hit-and-run.
• 27% (California: 26%) happened between 8 p.m. and 6 a.m.
• The busiest hour was 5 p.m. (California: 5 p.m.).
• 56% were on a freeway.

Set against all reported crashes in California, 2021–2025. Without traffic counts these can't say how risky a street is.

The main cause the reporting officer recorded, as a share of all 14,361 crashes. It is the officer's judgement at the scene.

• Unsafe speed38% · 5,488
• Unsafe turning or lane change17% · 2,459
• Straying from the lane or driving on the wrong side13% · 1,838
• Driving under the influence9% · 1,247
• Running a red light or stop sign6% · 882

By type of collision: rear end 41%, side swipe 25%, broadside 14%, hit object 13%.

The latest year can rise as late reports come in, and some police departments file months late.

• 320 crashes (2%) involved a pedestrian. See where they cluster
• 188 crashes (1%) involved a bicyclist.
• 409 crashes (3%) involved a motorcyclist. See where they cluster

How many car accidents happen in Ontario each year?

Reported crashes in Ontario: 2021: 3,221, 2022: 2,938, 2023: 2,867, 2024: 2,726, 2025: 2,609. The latest year can rise as late reports come in, and some police departments file their reports months late.

What time do most crashes happen in Ontario?

The busiest hour for reported crashes in Ontario is 5 p.m.. 27% (California: 26%) happened between 8 p.m. and 6 a.m.

What causes crashes in Ontario?

The main cause the reporting officer recorded, as a share of all 14,361 crashes: unsafe speed 38%, unsafe turning or lane change 17%, straying from the lane or driving on the wrong side 13%, driving under the influence 9%, running a red light or stop sign 6%.

How many people were killed in crashes in Ontario?

108 crashes killed someone in 14,361 reported crashes in Ontario from 2021–2025, and 5,671 crashes injured someone.

How many crashes in Ontario involve pedestrians, cyclists or motorcyclists?

320 involved a pedestrian (2%), 188 involved a bicyclist (1%), 409 involved a motorcyclist (3%), of 14,361 reported crashes from 2021–2025.

Where does this data come from?

Police crash reports in the California Crash Reporting System (CCRS), published by the state on data.ca.gov. Every reported crash is counted, whatever the vehicles, and no locations are used.