States and Counties
Take a look at the Associated Press Economic Stress Index which combines the impact of unemployment, foreclosures, and bankruptcy in an interactive map. Monthly data for the last three years is viewable.
Cities and Metro Areas in New Jersey (U.S. Department of Housing and Urban Development)
Several major cities and metro areas are covered by this series of Comprehensive Housing Market Analysis (CHMA) reports.
Metro Areas covering New Jersey (Urban Institute)