Speech & Language Milestones: What to Expect from Birth to Age 5

A speech therapist working with a young girl using a tablet during a pediatric speech therapy session.

If you’ve ever caught yourself wondering whether your child is saying enough words, or whether their speech sounds right for their age — you’re in good company. It’s one of the most common questions parents bring to their pediatrician, and one of the most frequently searched topics by parents of young children.

The truth is, speech and language development can be hard to track. There’s a lot of variation in what’s typical, and the advice parents receive is often inconsistent — ranging from “don’t worry, they’ll talk when they’re ready” to “you should have gotten an evaluation six months ago.”

This guide is designed to cut through the noise. Below, you’ll find a plain-language breakdown of what most children are doing at each age from birth through five — and what yellow flags might indicate it’s worth reaching out to a Speech-Language Pathologist (SLP).

A note on milestones: These represent what most children are doing by a given age — not a rigid checklist every child must pass. Development varies. But patterns of delays, or a persistent parental instinct that something feels off, are always worth taking seriously.

Why Speech and Language Development Matters

Speech and language aren’t just about talking. Communication underpins almost every area of a child’s development — their ability to connect with others, express their needs, understand what’s happening around them, and eventually learn to read and write.

Early language delays can sometimes point to other developmental differences that benefit from additional support. And because the brain is most adaptable in the early years, the earlier a delay is identified, the more effective intervention tends to be.

That’s not meant to create alarm — it’s meant to encourage you to trust your instincts and ask questions early, rather than waiting until concerns become bigger.

Birth to 3 Months

Long before your baby says their first word, they’re already communicating. In the first few months of life, most babies:

⭐Startle or turn toward sounds

⭐Recognize a caregiver’s voice and calm when they hear it

⭐Make soft cooing sounds

⭐Cry differently for different needs — hunger, discomfort, tiredness

⭐Make eye contact and begin to smile socially

These early behaviors are the foundation of communication. Your baby is learning that sounds have meaning — and that their signals get a response.

4 to 6 Months

By four to six months, most babies are becoming more expressive and interactive:

⭐Babble with repeated sounds like “ba-ba” or “ma-ma” (not yet with meaning)

⭐Laugh and giggle

⭐Respond to their name

⭐Look toward a voice or sound

⭐Take turns “talking” — you make a sound, they respond, you respond back

This back-and-forth exchange is called serve and return. When you respond to your baby’s sounds and expressions, you’re building the neural pathways that language grows from. It’s one of the most important things you can do — and something any parent can do right at home.

7 to 12 Months

The second half of the first year is when communication really starts to take shape:

⭐Use a variety of babble sounds and intonation (sounds more like conversation)

⭐Say “mama” or “dada” with meaning by around 10–12 months

⭐Understand simple words like “no” and “bye-bye”

⭐Wave, point, and use gestures to communicate

⭐Look where you point

⭐Try to imitate sounds and words

Pro tip: No babbling by 9 months, no gestures by 12 months, or no “mama/dada” with meaning by 12 months are worth bringing up with your pediatrician.

12 to 18 Months

The one-year mark is a significant milestone for communication. Most children at this age:

⭐Say 1–5 words with meaning by 12 months, growing to 10–20 words by 18 months

⭐Understand simple one-step directions (“Get your shoes”)

⭐Point to pictures in books when named

⭐Use words more than gestures to communicate

⭐Imitate new words regularly

Pro tip: Fewer than 6 words by 18 months, not pointing to show interest, or any loss of language skills already gained are flags worth acting on — especially regression, which always signals further investigation.

18 to 24 Months

The second year is often when parents start to notice differences between their child and peers. By age two, most children:

⭐Have a vocabulary of at least 50 words

⭐Begin combining two words (“more milk,” “big dog,” “mommy go”)

⭐Are understood by familiar adults about 50% of the time

⭐Follow two-step instructions (“Pick up your toy and bring it to me”)

⭐Use words more than gestures

This is one of the most common ages for speech therapy referrals. Fewer than 50 words, no two-word combinations, or being consistently difficult to understand even by familiar caregivers are reasons to reach out for an evaluation.

Ages 2 to 3

Between two and three, language typically grows quickly. Most children at this stage:

⭐Have a vocabulary of 200 to 500+ words— though no one expects you to count them all! Once you know your child has around 100 words, what matters most is that they’re picking up and using new words every week

⭐Use three- to four-word sentences

⭐Are understood by strangers about 75% of the time by age 3

⭐Ask simple questions (“What’s that?” “Where go?”)

⭐Use pronouns like “I,” “me,” and “you”

⭐Follow two- to three-step instructions

If strangers can’t understand most of what your child says at age 3, or if they’re still using mostly single words, that’s worth discussing with a speech therapist.

Ages 3 to 4

By age four, most children are chatty and communicating with increasing complexity:

⭐Use sentences of four to six words

⭐Tell simple stories with a beginning, middle, and end

⭐Are understood by strangers almost all of the time

⭐Ask “why,” “when,” and “how” questions frequently

⭐Use most speech sounds correctly (some sounds like “r” and “l” may still be developing)

⭐Can hold a conversation and stay on topic — don’t expect them to stick with one subject for long, but they should be able to go back and forth a few times

Ages 4 to 5

By the time children start kindergarten, most are skilled communicators:

⭐Speak in full sentences of six or more words

⭐Tell detailed stories and retell events in order

⭐Are understood by everyone almost all of the time

⭐Use most speech sounds correctly

⭐Follow multi-step instructions

⭐Adjust how they talk depending on their listener

When Should I Seek a Speech Evaluation?

If you’ve read through this guide and something feels off — trust that instinct. Parents are often the first to notice when something isn’t quite right, and your concern is always worth taking seriously.

You don’t need to wait until your child is “behind enough” to seek an evaluation. An evaluation is an information-gathering process — it either gives you peace of mind or a clear roadmap for support. Either outcome is worth having.

Consider reaching out if:

⭐Your child isn’t meeting the milestones for their age group

⭐Your child lost language skills they previously had

⭐Your child’s language use is inconsistent — using words spontaneously but not again later, or struggling to use language when they really need it (like asking for help or making a request)

⭐Your child is frequently frustrated when trying to communicate

⭐You or others outside the home can’t understand your child

⭐Your child’s preschool or pediatrician has raised a concern

⭐Your gut tells you something is worth checking out

Early intervention is the most effective intervention. The earlier a speech or language delay is identified, the better the long-term outcomes — for communication, for literacy, and for confidence.

Speech Therapy at Westside

The Speech-Language Pathology team at Westside Children’s Therapy works with children from infancy through school age. Whether you have a specific concern or simply want a professional opinion, we’re here to help.

Speech therapy at Westside supports children with a range of communication needs — from early language delays and articulation differences to social communication and feeding. Every child gets an individualized plan built around their goals, their strengths, and their family.

✨ Not sure where to start? We offer free screenings for new families.

For more information on Westside’s services, please call us at (815) 783-2544 or click the link below.
https://westsidechildrenstherapy.com/get-started/