Selby is a distinctive girls' name in United States, ranking #19094 in 2011 with 5 recorded births. This places Selby in the bottom 3% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1997 with 15 births ranking #6432. In 2011, approximately 1 in every 351,761 girls born was named Selby. FALLING Recent data shows the name is currently falling.