Above is map from Brian Potter (over at Construction Physics) that shows every census tract in the US where vacation homes make up 20% or more of the total number of homes. What you are seeing is a relatively small number of census tracts — 3,372 out of a total of 84,414 (~4%).

But more than half of all vacation homes are in one of these tracts. And nearly 20% of vacation homes are in a census tract where more than 50% of the homes are vacation homes. So in other words: vacation homes in the US tend to be highly concentrated.

According to Potter, there are, perhaps not surprisingly, three main drivers of demand: beaches, lakes, and ski resorts. This is why if you drill down into Florida — which has the highest absolute number of vacation homes in the US at over 800k — you'll see that these homes are not evenly distributed across the state. They're on the coasts, and to a lesser extent inland near places like Disney World.

Also noteworthy is the fact that these census tracts tend to match up nicely with the location of ski resorts. Here's the same map of the US but with ski resorts overlaid:

And here's a close up of Salt Lake City and Park City, because, I love Park City:

As of Q1-2025, the US had over 147 million homes, and somewhere around 4.3 million of these were seasonal or vacation homes. If you'd like to better understand where these are and the trends surrounding them, I recommend you check out Potter's post.

Maps via Construction Physics; cover photo by Joe Ol on Unsplash