Jilliann is a distinctive girls' name in United States, ranking #7110 in 2001 with 15 recorded births. The name reached its all-time peak in 2000 with 17 births ranking #6323. Since 1996, the popularity has increased by 114.3%. In 2001, approximately 1 in every 120,037 girls born was named Jilliann. FALLING Recent data shows the name is currently falling.