Sion is a distinctive boys' name in England & Wales, ranking #596 in 2009 with 54 recorded births. The name reached its all-time peak in 2000 with 96 births ranking #285. Since 1996, the popularity has decreased by 32.5%. In 2009, approximately 1 in every 6,262 boys born was named Sion. RISING Recent data shows the name is currently rising.