Joselyn is a moderately popular girls' name in United States, ranking #308 in 2008 with 1,086 recorded births. The name reached its all-time peak in 2007 with 1,577 births ranking #221. Since 1996, the popularity has increased by 240.4%. In 2008, approximately 1 in every 1,741 girls born was named Joselyn. FALLING Recent data shows the name is currently falling.