You may be wondering, "what is the proper First Communion age"?.   Well, I hesitate to put an exact age here.  Requirements can literally vary from church to church. 

A general answer is that the children are usually age 7 or 8.  Some churches say at least second grade.  Some churches say after one year of formal religious education.  And I found one website that said they had no requirements as it is about God's grace and they were no longer going to base receiving First Communion on merit!  So,  when you are looking to find out the right First Communion age for your child, contact your specific church for their requirements.

Historically, it has been that a child could receive First Communion when they reach the "age of reason".  A child should know that they are receiving the body and blood of Jesus Christ.