Bay is a distinctive girls' name in United States, ranking #14438 in 2004 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 2004, approximately 1 in every 306,020 girls born was named Bay. FALLING Recent data shows the name is currently falling.