Published by Actually Sleeping · Reviewed by Dr. Samantha Abrahamson, PharmD · Review policy · Updated 2026-11-10

Baby and toddler sleep statistics: what the research actually shows

The AASM recommends 12–16 hours of sleep per 24 hours at 4–12 months, 11–14 hours at 1–2 years and 10–13 hours at 3–5 years, naps included, with no recommendation under 4 months. In one cohort of 388 babies, 27.9% to 57.0% of 6- and 12-month-olds did not sleep 6 or 8 hours straight. The CDC counted about 3,400 sudden unexpected infant deaths in 2024.

35 findings, each one sentence long, each checked against the linked source on November 9, 2026. Numbers are given exactly as the source reports them. Where a study had a specific sample or definition, it is in the sentence, because a figure without its denominator is easy to misquote.

These figures describe large groups of children. They cannot tell you why one particular baby wakes at 2 a.m. or naps for 30 minutes. That is the question Actually Sleeping answers, one family at a time, with a sleep plan written for that baby and daily 1:1 support while it takes hold.

How much sleep: the official ranges

Finding	Year	Source
A 13-member American Academy of Sleep Medicine (AASM) expert panel recommends 12–16 hours of sleep per 24 hours, naps included, for infants 4–12 months.	2016	source
The same AASM consensus recommends 11–14 hours per 24 hours, naps included, for children 1–2 years.	2016	source
The AASM recommends 10–13 hours per 24 hours, naps included, for children 3–5 years.	2016	source
The AASM makes no recommendation for babies under 4 months, citing the wide range of normal variation in sleep and too little evidence linking sleep to health outcomes at that age.	2016	source

What normal infant sleep looks like

Finding	Year	Source
A systematic review of 34 studies gave a mean infant sleep duration of 12.8 hours per 24 hours, with a reference range of 9.7 to 15.9 hours.	2012	source
The same review found reported night waking in babies 0–2 months ranged from 0 to 3.4 wakes per night.	2012	source
In a cohort of 388 infants, 27.9% to 57.0% of 6- and 12-month-olds did not sleep through the night, depending on whether that was defined as 6 or 8 hours of uninterrupted sleep.	2018	source
In that cohort, sleeping through the night was not significantly associated with mental development, psychomotor development or maternal mood.	2018	source
A meta-analysis of napping found that fewer than 2.5% of children stop napping before age 2.	2020	source
The same meta-analysis found that 94% of children have stopped napping by age 5.	2020	source

How common parent-reported sleep problems are

Finding	Year	Source
In a survey of parents of 2,154 children aged 0–3 years in Australia and New Zealand, 30.69% said their child had a sleep problem.	2012	source
Across 29,287 children aged 0–3 years in 17 countries and regions, the share of parents who said their child had a sleep problem ranged from 11% in Thailand to 76% in China.	2010	source
In 10,085 children aged 0–5 years across 13 countries and regions, more consistent bedtime routines were associated with better sleep outcomes in a dose-dependent way; the study was correlational.	2015	source

Prevalence figures depend heavily on who answers and how “problem” is defined. Most come from parent questionnaires, not clinical diagnosis.

Behavioral sleep interventions

Finding	Year	Source
An AASM task force review of 52 treatment studies found 94% reported behavioral interventions effective, with over 80% of treated children showing clinically significant improvement maintained for 3 to 6 months.	2006	source
That review found strong support for unmodified extinction and for preventive parent education, plus support for graduated extinction, bedtime fading/positive routines and scheduled awakenings.	2006	source
In a cluster randomized trial of 328 mothers reporting an infant sleep problem at 7 months, sleep problems were less common with a behavioral intervention: 56% vs 68% at 10 months and 39% vs 55% at 12 months.	2007	source
At the 2-year follow-up of that trial, 15.4% of intervention mothers vs 26.4% of control mothers had depression symptoms above the Edinburgh Postnatal Depression Scale community cut point.	2008	source
In a randomized trial of 43 infants aged 6–16 months, both graduated extinction and bedtime fading produced large decreases in time to fall asleep; graduated extinction also produced large decreases in night awakenings.	2016	source
At the 12-month follow-up of that trial there were no significant differences between groups in emotional and behavioral problems or in secure-insecure attachment.	2016	source

Parents’ sleep

Finding	Year	Source
In a German panel of 2,541 women and 2,118 men, mothers’ sleep after a first child was at its lowest in the first 3 months, 62 minutes shorter than before pregnancy (fathers: 13 minutes), and did not fully recover for up to 6 years.	2019	source

Sleep-related infant deaths and safe sleep (United States)

Finding	Year	Source
About 3,400 sudden unexpected infant deaths (SUID) occurred in the United States in 2024.	2024 data	source
Of those 2024 deaths, 1,351 were from SIDS, 1,099 from unknown causes and 947 from accidental suffocation and strangulation in bed.	2024 data	source
The U.S. average SUID rate for 2020–2024 was 106.6 per 100,000 live births.	2020–2024 data	source
In CDC case registry data on 4,861 SUIDs from 2020–2024, 66% of the infants were aged 0–3 months.	2026	source
In the same registry analysis, unsafe sleep factors were identified in at least 73% of cases.	2026	source
More than 90% of SIDS deaths occur before 6 months of age, and 72% occur in months 1–4.	accessed 2026	source
In 2015, 21.6% of mothers surveyed in 32 states and New York City reported placing their infant to sleep in a non-back (side or stomach) position.	2018	source
In the same 2015 survey data, 61.4% of respondents in 14 states reported any bed sharing, and 38.5% in 13 states and New York City reported using at least one type of soft bedding.	2018	source
The AAP recommends room sharing without bed sharing for at least the first 6 months and says it can decrease the risk of SIDS by as much as 50%.	2026 (page update)	source

SUID is the umbrella term for a sudden, unexpected death of a baby younger than 1 year; SIDS is one type of SUID. Definitions are in the sleep glossary.

Melatonin and young children

Finding	Year	Source
U.S. poison control centers received reports of 260,435 pediatric melatonin ingestions from 2012 to 2021; the annual number rose 530%, from 8,337 to 52,563.	2022	source
In that data, 94.3% of the ingestions were unintentional, 4,097 children were hospitalized, and two children died.	2022	source
An estimated 10,930 emergency department visits by children aged 5 and under were for unsupervised melatonin ingestion in 2019–2022, 7.1% of all such visits for unsupervised medication exposures; gummies were the most commonly documented form (47.3%).	2024	source
Laboratory testing of 25 melatonin gummy products sold in the U.S. found actual melatonin content ranged from 74% to 347% of the labeled amount.	2023	source
In a 2023 parent survey (convenience sample), 5.6% of children aged 1–4 years had used melatonin in the past 30 days.	2023	source

The AAP’s parent site says over-the-counter melatonin is not regulated by the FDA for this use and should only be used after a discussion with your pediatrician. See is melatonin safe for babies.

Sleep environment products

Finding	Year	Source
All 14 infant sleep machines tested produced maximum sound levels above 50 A-weighted decibels at 30 cm, and three exceeded 85 decibels.	2014	source

How to read these numbers

Years. “Year” is the publication year of the source, or the data year where the source is a statistics page. “Accessed 2026” marks an undated web page.
Correlation is not cause. Survey and cohort findings (routines, sleeping through the night) show associations only. The trial rows are randomized.
Country. Death and melatonin figures are U.S. data. Prevalence studies are labelled with their countries.
Rule-of-thumb ranges are not here. Wake windows and nap lengths are practice conventions, not research findings, so they are on the wake window calculator, clearly labelled.

How to cite this page

Actually Sleeping. “Baby and toddler sleep statistics: what the research actually shows.” https://actuallysleepingllc.com/guides/baby-sleep-statistics/ (checked November 9, 2026). For any single figure, please cite the original source linked in its row.

From averages to your baby

The research above shows that behavioral approaches to infant sleep problems are well studied. What it cannot do is fit one to your child’s age, feeds, temperament and family schedule. Actually Sleeping does that: a custom plan written by Dr. Sam, a Doctor of Pharmacy, bootcamp-style coaching before the first night, daily 1:1 check-ins and naps coached until solid. It is not cry it out and not wait it out. More than 700 families have been coached, and parents describe the results in the client video reviews.

If your baby’s sleep is one of the statistics you would like to change, book the free consultation.

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Frequently asked

How many babies sleep through the night at 6 months?

It depends on the definition. In a 2018 Pediatrics cohort of 388 infants, 27.9% to 57.0% of 6- and 12-month-olds did not sleep through the night, using 6 or 8 hours of uninterrupted sleep as the cut-off. Not sleeping through was not linked to developmental delay or maternal mood.

How common are sleep problems in babies and toddlers?

Parent surveys vary widely. 30.69% of parents of 2,154 Australian and New Zealand children aged 0–3 reported a sleep problem (2012). Across 17 countries and regions, the figure ranged from 11% in Thailand to 76% in China (2010).

Does sleep training work, according to research?

An AASM task force review of 52 studies (2006) found 94% reported behavioral interventions effective, with over 80% of children improving for 3 to 6 months. A 2016 randomized trial found no differences in emotional or behavioral problems or attachment at 12-month follow-up.

How many babies die of SIDS each year in the US?

The CDC reports about 3,400 sudden unexpected infant deaths in 2024: 1,351 from SIDS, 1,099 from unknown causes and 947 from accidental suffocation and strangulation in bed. More than 90% of SIDS deaths happen before 6 months, according to the NICHD.

Has melatonin poisoning in children increased?

Yes. CDC data show pediatric melatonin ingestions reported to U.S. poison control centers rose 530% from 2012 to 2021, to 52,563 a year. Most were unintentional. A 2024 CDC report estimated 10,930 emergency visits by children 5 and under in 2019–2022.