Nearly half of churches surveyed in a study looking at growth say they have fewer than five under sixteens.
The Church of England report has shown some positive signs though, with Cathedral attendance growing and fresh expressions of church continuing to flourish.
The Archbishop of Canterbury said there's every reason to be hopeful for the future
Claire Dalpar from the Church Army helped put the research together.
She told Premier's News Hour when it comes to children, it's not all bad news: