Hi Barb:
This is my favorite site for demo information:

http://www.city-data.com/city/Sandy-Springs-Georgia.html

It will provide statistics - but more importantly people who actually live there post extensive, hands-on info. It wll also point you to information on surrounding areas as well. Happy hunting!

Barb,
As a member of FMLS you have access to demographic information. Do a search for Sandy Springs, pick a listing and select FMLS Neighborhoods. Here's an example: http://www.AtlantaRelo.com/reports/SandySprings.pdf

This is a great site for info.

I have included a link to Wikipedia information for Sandy Springs,GA. This has excellent information on Schools, Demographics, History, etc. I hope it's helpful!

Did you try the real estate guide section of Trulia?

Barb,
the best information for Sandy Springs is available at http://www.sandyspringsga.org/
Let me know if you need a source for something specific.