Calahan is a distinctive boys' name in United States, ranking #6208 in 2024 with 14 recorded births. This places Calahan in the top 44% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2025 with 26 births ranking #4063. Since 1996, the popularity has increased by 55.6%. In 2024, approximately 1 in every 122,522 boys born was named Calahan. RISING Recent data shows the name is currently rising.