I haven't run any numbers by county in California, but just looking at their total vote one can say the same or more about that state.
The framers didn't want NYC, Boston and Philly deciding everything when they drafted the constitution and they were oh so correct. And since as even more states and large cities became part of the US and the electoral college looks better and better.
Hillary! leads in the overall popular vote by about 2.3 million votes, last I heard. Four counties in California (Los Angeles, San Francisco, Santa Clara, and San Diego) contributed 2.6 million of those votes.
In other words, Hillary! won the overall popular vote in four counties in California, and Trump won the overall vote in the 3100+ counties in the rest of the country.