See the full text of the Barna Study commissioned by the Diocese of Camden:
https://www.camdendiocese.org/downloads/Camden_Diocese_Community_Study_Report.pdf
The study, done for the diocese by the Barna Group, a California-based firm known for its work on U.S. religious attitudes, took an extensive look at the beliefs and practices of the six South Jersey counties (Atlantic, Camden, Cape May, Cumberland, Gloucester and Salem) covered by the diocese.