![Veera Korhonen](https://cdn.statcdn.com/static/../CMS/contactperson/ERI3517_1705922684.png)
U.S. population aged under 18 years 2021, by state
In 2021, there were about 8.77 million children under the age of 18 years old in California -- the most out of any state. In that same year, Texas, Florida, New York, and Illinois rounded out the top five states with the most children under 18.