Sy is a distinctive boys' name in United States, ranking #3897 in 2000 with 21 recorded births. The name reached its all-time peak in 2003 with 33 births ranking #2986. Since 1996, the popularity has increased by 162.5%. In 2000, approximately 1 in every 93,521 boys born was named Sy. STABLE Recent data shows the name is currently stable.