Callaghan is a distinctive boys' name in United States, ranking #3124 in 2023 with 39 recorded births. The name reached its all-time peak in 2025 with 41 births ranking #3002. Since 1996, the popularity has increased by 550.0%. In 2023, approximately 1 in every 43,809 boys born was named Callaghan. STABLE Recent data shows the name is currently stable.