Bay is a distinctive girls' name in United States, ranking #14108 in 2003 with 6 recorded births. The name reached its all-time peak in 2014 with 75 births ranking #2419. Since 1996, the popularity has increased by 20.0%. In 2003, approximately 1 in every 304,508 girls born was named Bay. FALLING Recent data shows the name is currently falling.