Where does the city end and Trumpland begin?

Living in a liberal area of a large city, I’ve heard a number of comments refering to Trumpland, the world outside the confines of urban density that prefered Donald Trump. It’s well known that more than ever political views are segregated by geography, but I wondered how far away Trumpland is from where I live in Pittsburgh.

Is it really true that I’m surrounded my liberal Democrats or are there hidden conservatives too fearful to let their presence be known. Using data from Allegheny County, it looks like where I live—and most of Pittsburgh in general—is as liberal as it appears.