Conducted by the PC(USA) Research Services office, the U.S. Congregational Life Survey tallied responses from 40,000 worshipers in a national study of Presbyterian congregations. In the fall of 2008 and the spring of 2009 a random sample of 521 PC(USA) congregations participated in the U.S. Congregational Life Survey. The survey was given in worship and included the responses of all worshipers age 15 and older. In 2001, a random sample of 523 PC(USA) congregations participated.
A Field Guide to Presbyterian Congregations: Who’s Going Where and Why (available through Presbyterian Distribution Services, order item 02056-10100) presents findings from the survey. The resource is a companion piece to A Field Guide to U.S. Congregations, previously released by Presbyterian Publishing Corporation).