Barna is an excellent resource for those interested in statistics within church life and culture, I met David Kinnaman earlier this year at an Acts 29 bootcamp in Arizona and to say I was impressed is an understatement. Their site is well worth a visit and I strongly suggest that all pastor's make use of their work.
Barna Group is a visionary research and resource company located in Ventura, California. The firm is widely considered to be the leading research organization focused on the intersection of faith and culture. The Barna Group offers a range of customized research, resources and training to servechurches, non-profits, businesses and leaders.
Check them out www.barna.org