The most interesting part of this is the map of census tracts that shows how most vacation homes are tightly grouped. For example, Florida has a lot of vacatio

The most interesting part of this is the map of census tracts that shows how most vacation homes are tightly grouped. For example, Florida has a lot of vacation homes (8% of the state's housing vs 3% nationwide), but the vast majority of Florida census tracts have a tiny proportion and vacation homes are the majority in a few small areas. In some areas, the proportion of vacation homes seems to follow population density (gulf coast of Florida), and in other areas it follows the _inverse_ of population density (northern Maine.) What I think would be really interesting is a map of distance to primary home by census tract. Obviously Florida vacation homeowners are mostly from far away and in New England they live closer, but what about all the other areas?