Seamus is a distinctive boys' name in United States, ranking #891 in 1998 with 164 recorded births. This places Seamus in the top 8% of ranked US boys' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2008 with 298 births ranking #753. In 1998, approximately 1 in every 11,654 boys born was named Seamus. RISING Recent data shows the name is currently rising.