Jancy is a distinctive girls' name in United States, ranking #9799 in 2002 with 10 recorded births. The name reached its all-time peak in 2003 with 11 births ranking #9310. Since 1996, the popularity has increased by 66.7%. In 2002, approximately 1 in every 179,682 girls born was named Jancy. FALLING Recent data shows the name is currently falling.