Jilliann is a distinctive girls' name in United States, ranking #15170 in 2016 with 6 recorded births. The name reached its all-time peak in 2000 with 17 births ranking #6323. Since 1996, the popularity has decreased by 14.3%. In 2016, approximately 1 in every 295,248 girls born was named Jilliann. FALLING Recent data shows the name is currently falling.