Crime in Union City, California
Major crime in Union City is 23% above the U.S. rate per resident: 48% higher for persons crimes and 17% higher for property crimes. Expected major crimes are down 11.2% from a year earlier.
Modeled estimates per resident, not counts of incidents. How we calculated this
Index: crimes per resident compared with the U.S., where 100 is the U.S. rate and 200 is twice it.
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Theft from vehicle stands out most, at 2.4 times the U.S. rate
Expected crimes per year in Union City for each type, and the index against the U.S. rate per resident.
Citywide indexWhere the middle half of residents live
Property crimes
Social disorder
How crime varies across Union City
The middle half of Union City residents live in neighborhoods with a major-crime index between 61 and 117; the typical (median) resident's is 92. The citywide figure (123) is higher than that because crime concentrates in a smaller set of areas.
- 0–507.3%
- 50–10050.7%
- 100–20030.1%
- 200–4007.9%
- 400+4.1%
Share of residents by the index of their census block group, a neighborhood of roughly 600 to 3,000 people.
Highest on weeknights
Major-crime index by time of week, against the U.S. rate for the same hours.
Major crime fell 11.2% in a year; across California it fell 7.4%
Change in expected crimes, with California as a whole in gray. The past year uses the reporting agencies' year-to-date FBI data; 2031 is the model's projection.
Union City against U.S. places with 50,000 to 100,000 residents
156 of the 540 other places of this size have a higher major-crime index than Union City; the middle of the group is 92. The 9 nearest in population:
Major-crime index per resident, U.S. = 100; residents in gray.
Union City has a higher major-crime index than 4 of its 8 nearest neighbors
The 8 nearest cities and towns we cover, by major-crime index. The closest, Hayward (4 mi), is 1.5 times Union City's rate.
Major-crime index per resident, U.S. = 100; distances between where residents live, in miles.
Questions about crime in Union City
What are the most common crimes in Union City?
By expected count, the most common persons and property crimes are theft from vehicle (about 410 a year), aggravated assault (about 223 a year) and motor vehicle theft (about 207 a year). Compared with the U.S., theft from vehicle stands out most: 2.4 times the U.S. rate per resident.
How we calculated this
Each police agency's crimes, as reported to the FBI, are spread across the census block groups it serves using population, jobs, points of interest and, where available, local incident records. Union City's figures add up its 41 block groups. The index compares crimes per resident with the U.S. rate.
- Union City's published incident records inform the estimate for every neighborhood.
- 62.1% of residents live in block groups whose estimate has high confidence (80% interval within about 5x).
- Rates are per resident, so places where many people work or visit but few live, such as downtowns, airports and stadiums, can read high.
- Disorderly conduct and trespassing are modeled, because the FBI records them only through arrests.
- Residents: 63,963. Model updated Oct 20, 2026. Release 2026-2026-10-20-2
Full method and validation·Data sources
CrimeMetric. "Crime in Union City, California." Vorp Labs, model updated Oct 20, 2026. https://crimemetric.com/ca/union-city
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Major-crime index, U.S. = 100
- Hayward4 mi187
- Newark4 mi171
- Fremont5 mi111
- Fairview6 mi70
- Cherryland7 mi151
- San Lorenzo7 mi108
- Castro Valley8 mi123
- Ashland8 mi153