N.J. Stat. Ann. § 2B:24-8

8. All communications between the indigent defendant and the municipal public defender or any other attorney appointed to act as a municipal public defender shall be fully protected by the attorney-client privilege to the same extent and degree as though counsel has been privately engaged. This shall not preclude the use by the municipal public defender of privileged material for the preparation and disclosure of statistical, case study and other sociological data, provided that in any such use there shall be no disclosure of the identity of or means for discovery of the identity of particular defendants.