[ghaff]

There are a lot of generalities and anecdata thrown around in these sorts of demographic discussions. Certainly "white flight" has generally reversed and there's a fair bit of gentrification going on in formerly rundown areas of certain cities.

However, the "millennials are all moving to cities" meme seems to be much overstated. e.g. from fivethirtyeight [1] "Millennials overall, therefore, are not increasingly living in urban neighborhoods. Rather, the most educated one-third of young adults are increasingly likely to live in the densest urban neighborhoods. That’s great news for cities trying to attract young graduates and a sign that urban neighborhoods have become more desirable for those who can afford them. But the presence of more smart young things in Brooklyn is not evidence that millennials are a more urban generation."

I don't know much about Florida is particular. Anecdotally, I'd say that the cliche of retiring to Florida doesn't seem to apply to just about anyone I know. If anything, they're retiring to the desert Southwest if they're seeking a warm climate.

[1] http://fivethirtyeight.com/features/why-millennials-are-less...