Health Information - Growth by Age Birth - 2 months of Age Learn more 2-3 Months of Age Learn more 4-5 Months of Age Learn more 6-8 Months of Age Learn more 9-11 Months of Age Learn more 12 - 17 Months of Age Learn more 18-23 Months of Age Learn more 2 Years of Age Learn more 3 Years of Age Learn more 4 Years of Age Learn more 5-6 Years of Age Learn more 7-8 Years of Age Learn more 9-10 Years of Age Learn more 11-14 Years of Age Learn more 15-17 Years of Age Learn more 18-21 Years of Age Learn more