Nairobi is a distinctive girls' name in United States, ranking #4896 in 1998 with 22 recorded births. The name reached its all-time peak in 2021 with 242 births ranking #1043. Since 1996, the popularity has increased by 100.0%. In 1998, approximately 1 in every 80,313 girls born was named Nairobi. FALLING Recent data shows the name is currently falling.