A huge chunk of that is national parks and deserts. It's not all inhabited. Only about 25% is classified as urban with the overwhelming majority of that being concentrated in Los Angeles and it's surrounding cities.

https://en.wikipedia.org/wiki/Greater_Los_Angeles#Urban_area...

This isn't a size measuring contest. I think Europeans forget how _young_ America is. That's the only unique part of this country. Give us a few thousand years and we'll be on par.

Well, and we always have to shit on the younger (and now bigger) brother