This is a stupid topic that I have spent Way Too Much Time thinking about. What are the USA equivalents of Westerosi locations? NYC is too big and cold to be King's Landing, but Oldtown is west coast and White Harbor is too small. Taking into account relative geography, size, and nature, this is what I came up with.
Boston- White Harbor
NYC- Dragonstone
Washington DC- King Landing
Miami- Sunspear
Los Angeles- Oldtown (ugh, LA is stupid but where else?)
Someday (tomorrow's snow day?) I want to draw up a US map version of the 7 kingdoms (even though I'm sure its been done). The Chesapeake region as the riverlands has a nice ring to it.