Nairobi is a distinctive girls' name in United States, ranking #6991 in 2009 with 19 recorded births. The name reached its all-time peak in 2021 with 242 births ranking #1043. Since 1996, the popularity has increased by 72.7%. In 2009, approximately 1 in every 96,677 girls born was named Nairobi. FALLING Recent data shows the name is currently falling.