Where in the U.S. Does Middle-Class Income Stretch the Furthest?

That state median average of $95K makes sense for Washington state, but the Seattle median (which they say is actually $189K) just seems way too high by comparison. It'd imply people on the other side of the state are making much less than $95k per household. That may be true, I grew up over there and there is plenty of poverty. But, it's especially weird considering how much of the state's high-earning population lives within commuting distance of the city, but not in it, which would further drive down the median income in, say, Yakima or Spokane. My guess is those numbers are wacky.