Bay is a distinctive girls' name in United States, ranking #2967 in 2015 with 58 recorded births. The name reached its all-time peak in 2014 with 75 births ranking #2419. Since 1996, the popularity has increased by 1,060.0%. In 2015, approximately 1 in every 30,770 girls born was named Bay. FALLING Recent data shows the name is currently falling.