Seamus is a distinctive boys' name in England & Wales, ranking #887 in 2018 with 34 recorded births. The name reached its all-time peak in 2007 with 45 births ranking #638. Since 1996, the popularity has increased by 13.3%. In 2018, approximately 1 in every 9,194 boys born was named Seamus. FALLING Recent data shows the name is currently falling.