Nairobi is a distinctive girls' name in United States, ranking #8307 in 2015 with 14 recorded births. The name reached its all-time peak in 2021 with 242 births ranking #1043. Since 1996, the popularity has increased by 27.3%. In 2015, approximately 1 in every 127,475 girls born was named Nairobi. FALLING Recent data shows the name is currently falling.