A recent survey conducted by Thom S. Rainer showed that more church leaders do not think announcements should be a part of the worship services. Their churches are more likely to have announcements projected on a screen prior to the worship service, or not to have them at all in the worship center.
Large churches (700 and up in average worship attendance) are highly unlikely to have announcements as a part of the worship service. As noted above, they may have the announcements projected on a screen prior to the worship service.
Steve and Phil take a different look at church announcements in the latest Church Solutions Podcast.