Seymour is a distinctive boys' name in United States, ranking #13677 in 2006 with 5 recorded births. This places Seymour in the bottom 3% 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 11 births ranking #7594. In 2006, approximately 1 in every 411,024 boys born was named Seymour. RISING Recent data shows the name is currently rising.