what percent of births in the u.s. are to women under 25?
Approximately 22.7% of births in the United States in 2022 were to women under the age of 25. This includes about 1.6% of births to teenagers aged 15–19 and approximately 21.1% to women aged 20–24, based on birth rates and population estimates for these age groups
The question even has "after the age of 25" so the prompt should have been for "under age 26", but there's no data for that 26 years old threshold. So it is going to be a bit more than 22.7% even.
If this AI is correct:
https://www.perplexity.ai/search/what-percent-of-births-in-the-g7UamZ_iRuuFw3K9wi4n4g
The question even has "after the age of 25" so the prompt should have been for "under age 26", but there's no data for that 26 years old threshold. So it is going to be a bit more than 22.7% even.