Combined Statistical Areas by Area in Square Miles

[Steely Dan]

Originally Posted by Yuri

And urban area is not a frozen area. They change every census. Metropolitan areas, which are based on fixed borders administrative subdivisions, are very important to measure population evolution.

MSAs/CSAs don't stay static either.

The Chicago MSA recently had Kenosha County splintered off into its own MSA (though it remained in the Chicago CSA).

Now the CB needs to do the same thing for DeKalb, Grundy, Newton, and Jasper Counties.


And there are countless examples of MSAs adding new counties over the past 70 years.