Callaghan is a distinctive boys' name in United States, ranking #9718 in 2006 with 7 recorded births. The name reached its all-time peak in 2025 with 41 births ranking #3002. Since 1996, the popularity has increased by 16.7%. In 2006, approximately 1 in every 293,588 boys born was named Callaghan. STABLE Recent data shows the name is currently stable.