Seymour is a distinctive boys' name in United States, ranking #9069 in 2001 with 7 recorded births. The name reached its all-time peak in 2025 with 11 births ranking #7594. Since 1996, the popularity has increased by 40.0%. In 2001, approximately 1 in every 277,547 boys born was named Seymour. RISING Recent data shows the name is currently rising.