I've often wondered how Americans see the world. I have a lot of family and friends from there, and something about meeting them is striking. The rest of the world gets an enormous amount of information from America. I've never lived in the US, but I know all the states. I couldn't write out all the counties in the UK. I know more US supreme court justices than combined from all other countries. I know the presidents…
I grew up in the Midwestern US, on a farm, miles from the closest town and miles more from the closest city, the name of which would probably only register with people in a 2-5 State radius.
When I moved to New York City after college, I realized I could already name more streets and places in NYC than I could from my childhood. I knew the museums and the bridges, the boroughs, the landmarks; Battery Park and Castle Clinton were right out of Deus Ex. My "home town" didn't have a mayor; I couldn't name one of the nearby city, but I knew LaGuardia and Giuliani.
I'm not actually sure if NYC and LA are overrepresented in American media -- the NYC metro area is something like 8% of the US population, after all -- but because a half dozen cities are the backdrop of so much of American culture even the people who live in one have all the rest, thousands of miles away, to develop that distant familiarity with.
(On the topic of brands, the biggest question New Yorkers had for me, coming from the Midwest, was whether Long John Silver's really existed; the ads saturated New York advertising despite not having any locations within a state or three. Likewise, I'd never encountered a Dunkin Donuts prior to moving to the coast.)