Dayton has hosted more NCAA Tournament games than any other site.
With good reason. While fans from coast to coast lament their having to go to Dayton they do it well. Get the teams in the first night, as soon as the game is over they have the jets on the runway cleared and a police escort up I75 to get them off to their next destination. As Dayton celebrates the NCAA being in town and does everything to make it happen other towns are just looking at the dollars.
I was very happy for them to get the First 4 host site renewal a few years ago. When a smaller to medium sized city gets something like that, it seems to be celebrated and embraced more than when a top 10 market gets it (at least from what I have experienced). I always like seeing the tournament being played in cities like Des Moines.
Wealth seems to be spread well for this year with host cities like Greensboro, Albany, Spokane and Omaha. Regional sites are big cities with Indy, Houston, LA and NYC.