Jilliann is a distinctive girls' name in United States, ranking #8004 in 2004 with 14 recorded births. The name reached its all-time peak in 2000 with 17 births ranking #6323. Since 1996, the popularity has increased by 100.0%. In 2004, approximately 1 in every 131,152 girls born was named Jilliann. FALLING Recent data shows the name is currently falling.