In my anecdotal experience, there are Trump supporters literally everywhere, you just have to get to know them a little before they blurt out their dumb opinions. I have like 140 entry level employees that I directly supervise in a solid blue state, and probably a good 40% of them are either full on Trump supporters or are tacitly approving moderates, but you wouldn't know this from outwardly looking at them until you ask them about the way of the world in an open and candid manner for a good 15 minutes each.
Do not assume that minorities are liberal by default either, I have anecdotally met black, hispanic and asian Trump supporters, and know many personally. Hell, I have one employee who is black and female and a Trump supporter at the same time, a demographic otherwise considered to be wholly liberal. Unless someone is decidedly and actively liberal, Americans generally house a lot of conservative views by default from the manipulated discourse of our current era.