Kirsi is a distinctive girls' name in United States, ranking #11708 in 2011 with 9 recorded births. The name reached its all-time peak in 2002 with 12 births ranking #8566. Since 1996, the popularity has increased by 12.5%. In 2011, approximately 1 in every 195,423 girls born was named Kirsi. FALLING Recent data shows the name is currently falling.