Jillian is a distinctive girls' name in United States, ranking #1132 in 2024 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 2024, approximately 1 in every 7,574 girls born was named Jillian. FALLING Recent data shows the name is currently falling.