Union City still has Alvarado and Decoto under the map

Union City sounds like one place, but its older map has two strong names under it: Alvarado and Decoto. Those communities grew before the modern city, and both still help explain local street names, district names, and the way the city sits between the East Bay hills, rail lines, and the old bayland edge.

Decoto grew around a land company, a railroad station, and later work tied to canneries and Pacific States Steel. Alvarado has an even older town center story, with historic district buildings from roughly the late 1800s into the early 1900s. When Alvarado and Decoto incorporated together in 1959, the new city took the name Union City.

That background makes the place easier to read. Union City has BART, shopping, and neighborhoods between Fremont and Hayward, but it is also a city built from smaller communities that had their own work patterns and local centers first.

If you are trying to understand the city, watch for those older names. Alvarado and Decoto are still clues. They point to rail, canneries, industry, and the way East Bay towns blended into one another as the region grew.