Have you been to the county of Modoc? The urban coastal enclaves do not California make.
(I mean, sure, by population they mostly do, and are overwhelmingly Democratic, but if you are going to look for a county that goes against the partisan trend of the state, staying in the urban coastal enclaves and picking Orange is actually a fairly weak example.)
Orange often gets cited as the example of a Republican county in California because it is the highest population county that is pretty reliably Republican (it has a slight Republican registration edge, but more solidly votes Republican because it also has a Republican-favoring balance of independent-by-registratiom voters.)
But most of the Central Valley and the inland Northern California counties are much more Republican than Orange.