Leo is a highly popular boys' name in United States, ranking #31 in 2021 with 7,802 recorded births. The name reached its all-time peak in 2022 with 8,290 births ranking #22. Since 1996, the popularity has increased by 1,645.4%. In 2021, approximately 1 in every 224 boys born was named Leo. STABLE Recent data shows the name is currently stable.