Joselyn is a moderately popular girls' name in United States, ranking #372 in 2011 with 864 recorded births. The name reached its all-time peak in 2007 with 1,577 births ranking #221. Since 1996, the popularity has increased by 170.8%. In 2011, approximately 1 in every 2,036 girls born was named Joselyn. FALLING Recent data shows the name is currently falling.