Jillian is a distinctive girls' name in United States, ranking #1140 in 2023 with 213 recorded births. The name reached its all-time peak in 2001 with 2,847 births ranking #120. Since 1996, the popularity has decreased by 85.4%. In 2023, approximately 1 in every 7,524 girls born was named Jillian. FALLING Recent data shows the name is currently falling.