Basics -so what regions do the Case Shiller indices actually cover

I had a recent question worth sharing (that I’ll post in the Basics section) when a reader asked – “OK, I understand that there’s a Case Shiller index for LA.  What areas (counties) does the index actually cover?”

MacroMarkets did a good job outlining coverage areas fro all 20 Case Shiller regions a few years ago at this site  Note that for some of the regions they also have maps showing the area covered –  .

I’d be open to posting, or linking to, better defined maps if anyone comes across them.