Norcross proper, or Norcross mailing address? A lot of what used to be (may still be) a Norcross mailing address, but not the city proper, is now the relatively new city of Peachtree Corners.
Great area for a long time, is still pretty good - and the overall changing demographics of the county are going to screw that up.
IIRC, it was on Holcomb Bridge Road..................
I used to live in Peachtree Corners for about 11 years then moved out to lilburn/Lawrenceville area.