Jancy is a distinctive girls' name in United States, ranking #14093 in 2010 with 7 recorded births. The name reached its all-time peak in 2003 with 11 births ranking #9310. Since 1996, the popularity has increased by 16.7%. In 2010, approximately 1 in every 253,904 girls born was named Jancy. FALLING Recent data shows the name is currently falling.