Milli is a distinctive girls' name in England & Wales, ranking #619 in 2003 with 47 recorded births. The name reached its all-time peak in 2003 with 47 births ranking #619. Since 1996, the popularity has increased by 1,466.7%. In 2003, approximately 1 in every 5,929 girls born was named Milli. FALLING Recent data shows the name is currently falling.