Jillian is a distinctive girls' name in United States, ranking #1084 in 2022 with 231 recorded births. The name reached its all-time peak in 2001 with 2,847 births ranking #120. Since 1996, the popularity has decreased by 84.2%. In 2022, approximately 1 in every 7,094 girls born was named Jillian. FALLING Recent data shows the name is currently falling.