If you've searched "how many words should my baby have," you've already noticed the problem. One chart says 50 words at two years old. Another says 50 words at two and a half. A third gives a range so wide it tells you nothing.

They're all quoting real sources. The sources genuinely disagree, and the disagreement is not sloppiness. It's a decision about what a milestone chart is for. Here is the chart, with both answers side by side and a note on which one to use when.

The chart

Quotation marks indicate wording taken directly from the source. CDC entries at 12, 15, 18 and 24 months are paraphrased. Full checklists are linked in Sources.

Why the two columns don't match

The CDC's numbers look late because they aren't averages. In February 2022 the CDC and the American Academy of Pediatrics rebuilt the checklists around the 75th percentile, the age by which roughly three in four children have a skill (Zubler et al., Pediatrics, 2022). That single change moved "about 50 words" from 24 months to 30 months. Toddlers didn't get slower in 2022. The question being asked changed.

Why the CDC made that switch, and why speech-language pathologists pushed back hard on it, is a longer story than a chart can hold. We tell it in when do babies say their first words.

And if what you actually came for is the number for one specific age, a chart is the wrong shape for that. The checkpoints above exist at six ages only. How many words should a toddler say? walks month by month from 12 to 36 and says which checkpoint applies where.

The word explosion

Look at the jump between 18 and 30 months. Many toddlers hit a vocabulary spurt somewhere in the second year and start adding words almost daily. If your child's count has felt stuck for months and then suddenly takes off, that's the classic pattern, not a fluke.

What a chart can't show you, and what a running record can, is the slope.

When to call your pediatrician

Milestones are a guide, not a pass or fail. Still, raise it with your doctor if your child:

• Has no words and little babbling or gesturing by 15 to 18 months
• Isn't combining any two words by around 24 months
• Doesn't seem to understand simple everyday requests
• Loses words or skills they clearly had before

The last one is not a wait-and-see item. Regression warrants a call the week you notice it. And if you're told to wait but your gut disagrees, you can ask for a referral anyway. An evaluation that comes back fine costs you an afternoon.

Two of these ages worry parents enough that we've written about them separately: the 18-month-old who isn't talking yet, and the 2-year-old who understands everything but says very little.

Counting words for a bilingual child

Never compare one of a bilingual child's languages against the chart above. Count every word in every language, and add them up. A toddler with 30 words in English and 25 in Spanish has 55 words.

So: two entries, not one. More in raising a bilingual baby.

Common questions

Which column should I follow, the CDC's or ASHA's?

Both, for different jobs. ASHA's figures describe a typical toddler, so they answer "is my child roughly where children are?" The CDC's are a tripwire, so missing one is a reason to call your pediatrician this month. Neither column is an average, and neither is a target to hit.

Is there a milestone chart with a word count for every month?

No, and any chart showing one has invented the in-between numbers. Official checkpoints exist at 12, 15, 18, 24, 30 and 36 months, and nowhere else. For what a specific age like 14 or 17 months actually looks like, and which checkpoint applies to it, see how many words a toddler says at each age.

How do I count words for a bilingual child?

Add every word across every language. Don't merge "dog" and "perro" into one. Core and colleagues (2013) found that total vocabulary matched monolingual norms, while counting by concept flagged significantly more bilingual children as low-average at two of three ages tested.

This chart is general information for parents, not medical advice. It reproduces published developmental benchmarks from the CDC and ASHA. Every child is different. If you have concerns, speak with your pediatrician.