Callahan is a moderately popular boys' name in United States, ranking #227 in 2025 with 1,566 recorded births. The name reached its all-time peak in 2025 with 1,566 births ranking #227. Since 1996, the popularity has increased by 6,164.0%. In 2025, approximately 1 in every 1,091 boys born was named Callahan. RISING Recent data shows the name is currently rising.