Located below is most comprehensive map of tennis courts in the area.  Both public and private tennis courts are shown for Holly Springs, Apex, Cary, Garner, Morrisville, Raleigh, North Raleigh, Chapel Hill and Durham.  Even though it's the most thorough map in the area, I'm sure there are still some courts missing.  Contact me at sortennis@gmail.com if you have information on more tennis courts or anything to add about any of the courts shown on the map.