Callahan is a moderately popular boys' name in United States, ranking #363 in 2024 with 907 recorded births. The name reached its all-time peak in 2024 with 907 births ranking #363. Since 1996, the popularity has increased by 3,528.0%. In 2024, approximately 1 in every 1,891 boys born was named Callahan. RISING Recent data shows the name is currently rising.