Car crash statistics in Union City, 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: 2,099 crashes were reported in Union City from 2021–2025, 871 with an injury and 13 with a death. 41% (California: 40%) of crashes injured someone. 26% (California: 25%) were hit-and-run.

• 41% (California: 40%) of crashes injured someone.
• 26% (California: 25%) were hit-and-run.
• 24% (California: 26%) happened between 8 p.m. and 6 a.m.
• The busiest hour was 5 p.m. (California: 5 p.m.).
• 45% 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 2,099 crashes. It is the officer's judgement at the scene.

• Unsafe speed37% · 774
• Unsafe turning or lane change20% · 424
• Straying from the lane or driving on the wrong side8% · 174
• Running a red light or stop sign8% · 163
• Driving under the influence7% · 146

By type of collision: rear end 43%, side swipe 18%, broadside 14%, hit object 12%.

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

• 95 crashes (5%) involved a pedestrian.
• 65 crashes (3%) involved a bicyclist.
• 68 crashes (3%) involved a motorcyclist. See where they cluster

How many car accidents happen in Union City each year?

Reported crashes in Union City: 2021: 518, 2022: 420, 2023: 401, 2024: 402, 2025: 358. 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 Union City?

The busiest hour for reported crashes in Union City is 5 p.m.. 24% (California: 26%) happened between 8 p.m. and 6 a.m.

What causes crashes in Union City?

The main cause the reporting officer recorded, as a share of all 2,099 crashes: unsafe speed 37%, unsafe turning or lane change 20%, straying from the lane or driving on the wrong side 8%, running a red light or stop sign 8%, driving under the influence 7%.

How many people were killed in crashes in Union City?

13 crashes killed someone in 2,099 reported crashes in Union City from 2021–2025, and 871 crashes injured someone.

How many crashes in Union City involve pedestrians, cyclists or motorcyclists?

95 involved a pedestrian (5%), 65 involved a bicyclist (3%), 68 involved a motorcyclist (3%), of 2,099 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.