According to the latest Church Leaders Intelligence Report,
Among the most generous U.S. population segments were evangelicals (24% of whom tithe); conservatives (12%); people who pray, read the Bible and attended a church service during the past week (12%); charismatic or Pentecostal Christians (11%); and registered Republicans (10%). Among the least generous are people under the age of 25, atheists and agnostics, single adults who have never been married, liberals, and downscale adults. One percent or less of the people in each of these segments tithed in ’07. Among all born-again adults, 9% contributed one-tenth or more of their income. Protestants are four times as likely to tithe as Catholics (8% vs. 2%). From ’00 to ’04, an average of 84¢ out of every $1 donated by born-again adults went to churches. Since ’05, that proportion has declined to just 76¢.
Barna Group 4/14/08