Seamus is a distinctive boys' name in United States, ranking #1105 in 2018 with 178 recorded births. The name reached its all-time peak in 2008 with 298 births ranking #753. Since 1996, the popularity has increased by 13.4%. In 2018, approximately 1 in every 10,199 boys born was named Seamus. RISING Recent data shows the name is currently rising.