Two in five adults in the U.S. attend church at least once a week
Jehovah's Witnesses and Mormons are the most likely to attend services weekly or more frequently. Those who are not affiliated with any religion are the most likely to never or seldom attend religious services.
Attendance by religious tradition in 2007
Source: The Pew Forum on Religion and Public Life, U.S. Religious Landscape Survey, 2008.