Callaghan is a distinctive boys' name in United States, ranking #3460 in 2024 with 33 recorded births. The name reached its all-time peak in 2025 with 41 births ranking #3002. Since 1996, the popularity has increased by 450.0%. In 2024, approximately 1 in every 51,979 boys born was named Callaghan. STABLE Recent data shows the name is currently stable.