9 Month Online Milestone Checklist

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What to know

  • Developmental milestones are things most children (75% or more) can do by a certain age.
  • Children reach milestones in how they play, learn, speak, act, and move.
Baby sits with her mother and holds two toys in her hands

Overview

Check the milestones your child has reached by the end of 9 months by completing the checklist below. Share it with your child's doctor, teacher, and other providers, and be sure to talk about the milestones your child has reached and what to expect next.

If your child was born more than 3 weeks prematurely, use his/her corrected age. If your child's age falls between 2 checklist ages, use the checklist for the younger age.

Download CDC's FREE Milestone Tracker app

A mother smiles holding her baby, text reads "Help your child grow and thrive. Download CDC's free Milestone Tracker app."
Checking children's development regularly is important. CDC's free Milestone Tracker app is also available to complete the checklists, with reminders and helpful tips on the go! Available on the AppStore and GooglePlay.

Your Baby at 9 Months

Milestones matter! Check the milestones your baby has reached by 9 months by completing the checklist below.

*These fields are required.

CDC does not collect or share any personal information that can be used to identify you or your child.

Social/Emotional





Shows several facial expressions, like happy, sad, angry, and surprised










Smiles or laughs when you play peek-a-boo


Language/Communication






Cognitive (learning, thinking, problem-solving)






Movement/Physical Development


Moves things from one hand to her other hand






Sits without support


Selected “not sure”?  Watch for these milestones over the next week or two.  Try some things with your child that gives him/her the chance to show the milestone.  If you’re still not seeing the milestone, see the steps below.  Selected “not yet” or have other concerns or questions about your child’s development?  Talk with your child’s doctor, teacher and/or another trusted provider. Share the checklist and any questions or concerns you might have. Ask about developmental screening. It’s recommended for all children. If you, the doctor, teacher, or other provider is still concerned after screening, ask to be connected with (1) a specialist who can learn more about your child AND (2) with services and other supports that may help.  Visit www.cy118119.com/Concerned for more information.
– Share the checklist with your child’s healthcare provider, early educator, WIC Clinic, or other care providers by FORWARDING the email you receive.
– Be sure to add your child’s name and birthdate (if needed) when forwarding the checklist so your provider can identify it as your child’s.


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Content Source:
National Center on Birth Defects and Developmental Disabilities (NCBDDD)