NICB ranks metro areas by theft rate and by volume, and CHP reports by county. Where neither gives a figure for a metro we cover, we describe the area instead of guessing.
Bakersfield / Kern. NICB's 2025 ranking put the Bakersfield–Delano metro area second in the nation for theft rate, at 477.27 thefts per 100,000 people. Local fleets work oil fields, farms and the I-5 and SR-99 corridors, and many trucks spend the night at remote sites. See Bakersfield and Kern County fleet insurance.
Fresno–Visalia. Neither agency report breaks out a figure for this area. What it does have is long distances between yards, packing sheds and fields along SR-99, so trucks and trailers often spend nights at sites nobody is watching. Our Fresno–Visalia truck fleet insurance page covers the area's trades.
Stockton–Modesto. Distribution centers and ag operations along I-5 and SR-99 mean big lots full of trucks and trailers, often with more units than people on site after hours. Gates, lighting and cameras count most where a yard is large and quiet. See commercial auto insurance in Stockton–Modesto.
Sacramento Region. Suburban job sites spread from Elk Grove to Roseville, and crews often leave trailers and pickups at a site overnight rather than drive back to the yard. A hitch lock and a hidden GPS tracker cost little next to a missing trailer. See Sacramento-area fleet insurance.
East Bay. NICB's 2025 ranking put the San Francisco–Oakland–Fremont metro area first in the nation for theft rate, at 477.51 per 100,000 people. That area takes in the East Bay's industrial flats, port-side yards and job sites from Oakland to Fremont. More on East Bay truck and fleet insurance.
Los Angeles County. CHP counted 47,191 thefts in Los Angeles County in 2025, and NICB ranked the Los Angeles–Long Beach–Anaheim metro area first in the country by volume, with 53,911. For a fleet, that makes overnight parking the first thing to review. See LA County truck fleet insurance.
Inland Empire. NICB ranked the Riverside–San Bernardino–Ontario metro area ninth in the nation by volume in 2025, with 14,111 thefts. Warehouse districts and new subdivisions mean trailers and trucks parked on large lots and at active job sites. Our page on commercial truck insurance in the Inland Empire covers the local market.