Dempsey is a distinctive boys' name in United States, ranking #3004 in 2025 with 41 recorded births. The name reached its all-time peak in 2014 with 94 births ranking #1644. Since 1996, the popularity has increased by 86.4%. In 2025, approximately 1 in every 41,660 boys born was named Dempsey. FALLING Recent data shows the name is currently falling.