At what age are children confirmed?

Because the middle school years (6th-8th grades) are when young people begin to move from concrete thinking to abstract thinking, that is when most people begin to make lifelong faith decisions. However, not everyone is ready for such a decision at this time in life and a few are ready even before 6th grade. Also, during these middle school years youth are seeking a sense of belonging. Belonging to the community of faith is an appropriate response to that developmental task.

From the FAQs for Claim the Name, the official United Methodist confirmation curriculum 

The General Board of Discipleship offers an in-depth Q & A on confirmation and baptism .

Learn more about confirmation