Callaghan is a distinctive boys' name in United States, ranking #5066 in 2020 with 18 recorded births. The name reached its all-time peak in 2025 with 41 births ranking #3002. Since 1996, the popularity has increased by 200.0%. In 2020, approximately 1 in every 95,837 boys born was named Callaghan. STABLE Recent data shows the name is currently stable.