Kelby is a distinctive girls' name in United States, ranking #2657 in 2002 with 58 recorded births. The name reached its all-time peak in 1997 with 65 births ranking #2145. Since 1996, the popularity has increased by 16.0%. In 2002, approximately 1 in every 30,980 girls born was named Kelby. RISING Recent data shows the name is currently rising.