Jancy is a distinctive girls' name in United States, ranking #17966 in 2012 with 5 recorded births. The name reached its all-time peak in 2003 with 11 births ranking #9310. Since 1996, the popularity has decreased by 16.7%. In 2012, approximately 1 in every 352,148 girls born was named Jancy. FALLING Recent data shows the name is currently falling.