Nairobi is a distinctive girls' name in United States, ranking #3983 in 2018 with 37 recorded births. The name reached its all-time peak in 2021 with 242 births ranking #1043. Since 1996, the popularity has increased by 236.4%. In 2018, approximately 1 in every 45,957 girls born was named Nairobi. FALLING Recent data shows the name is currently falling.