Jancy is a distinctive girls' name in United States, ranking #9310 in 2003 with 11 recorded births. The name reached its all-time peak in 2003 with 11 births ranking #9310. Since 1996, the popularity has increased by 83.3%. In 2003, approximately 1 in every 166,095 girls born was named Jancy. FALLING Recent data shows the name is currently falling.