Map: Over half of Americans live in only these counties

That's me in there in the blue in north VA.
Many of these areas are CARB states, and even more of those areas are reformulated gasoline areas.
Probably lots of the Prii are there.
Buffalo is a shocker.
Looks like a bunch of Californians in the desert, I didn't see anyone living there.

 

Thanks. That's another excellent map.

Here's one in return. In 2012, 67% of Australia's population lived inside the grey circles on this map.


If you doubled the size of each of those circles, you'd account for 80% of the population.


Here's another. This is a map of electoral divisions. Each has a population of about 70,000-120,000 - in Sydney and Melbourne, the lines all blur into each other, but some of the Western electorates really are huge.



That one North-Western one, Durack, has 90,000 voting-age people (so about 120,000 people), spread over 1,587,758 km² (about 600,000 square miles, or about the same as the whole of Alaska). So that's the population of Hartford, CT or Midland, TX, spread over an area the size of Texas, New Mexico, Arizona and California.

 

Here's a global version of that map. This doesn't go down to zero - the grey areas have fewer than two people per square kilometre. The pink areas have more than 500 people per square km. It looks like Cambridge is the only place I've lived that isn't in one of the pink sections.



So there are still many parts of the world that are pretty much empty. But most of them are either uninhabitable or Canadian.

 

I like that

Population densities of a smaller region might be interesting, say Oahu.

 

The county I live in is on the map, but not on the list....which is fine with me.

 

I am so THANKFUL i do not live in one of those blue blobs on the above map!

 

I am proud to be a blue-blob "Chi-Pitts" resident. And I drive a blue Prius.