Sinjin is a distinctive boys' name in United States, ranking #6020 in 2002 with 12 recorded births. The name reached its all-time peak in 1997 with 21 births ranking #3436. Since 1996, the popularity has decreased by 36.8%. In 2002, approximately 1 in every 161,789 boys born was named Sinjin. STABLE Recent data shows the name is currently stable.